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Cosmic Queries: Gravity (Repeat)

2015-01-11 | 🔗
The pull of gravity (the force, not the movie) is irresistible as Neil deGrasse Tyson and Leighann Lord grapple with weighty fan questions about matter and the curvature of spacetime.

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This is an unofficial transcript meant for reference. Accuracy is not guaranteed.
Skip the commercials support star talk on patriarch to listen to every episode, Commercial free, versus secrete cinemas trees. This with many questions to be answered. We find ourselves searching for those answers as the very fabric of space science and society are converging here for the first time. What what Will you just recently the Abbe domain, the brakes, Daddy Glinda, do Graham all South Stream Brenda get lab. Applying pressure
this is Start radio, I'm your hosts, Neil, the grass Thyssen, your personal astrophysicist, also, the director cities, Hayden Planetarium at the American Museum of Natural history. Right here, the big apple I've got with me: co host landlord leaned back to start, I hear good to be back, don't get enough of you here now. Where are you you know? Call you don't write, you don't text. I do tweet, but me, which we know you're there. I guess you're so busy with their millions of followers millions and billions followers. So this is a cosmic worries. Edition of STAR Talk,
and you know how you know the drill I have not seen any. These questions have not theirs solicited by our social media, focused and a topic as tossed up, and then everyone sending their questions, and they know that it's gonna come to me but haven't seen them. So I don't know the answer is no golden your next week. I will be very candid if I dont know how to talk. I, for I will say I don't know it, but here the answer. I think it should be expects the case, and so they just start right out. Well, you know the subject is gravity and I had a chance to briefly lived through some of these questions and nobody reverie, not the movie, not as an ordinary budget neutrality as a physics, rights gravity. As a fourth look, I know a few things about grab feel comfortable in this particular cosmic queries, our good good because of all the questions that I look, that not one of them is what its gravity,
that's good goes out and I'm not the whole idea about yes and really interesting, stuff and online. None. It does need more basic. Will you could start with one? What is gravity? Yes? Cost privileges I am, and I'm putting my question out their first. What is gravity have no idea next question: why there's a difference we can describe gravity we can say what it does to other things can measure it predict with it, but we start asking, like what it is now? Isn't it The only ask a deeper question that are meant to be known. You were meant to apparently our life, so what is it? I think Einstein in an einsteinian answer. We say gravity is the curvature of space and time and that an object will follow the curve. You're a space time, and we we interpret that as also gravity. That's probably the best answer I can give.
To what is gravity question. Why is there gravity that's the best I can do they. I think that that's a good start. And I can also say that Einstein noted that the great matter tells space how to curve space tells matter how to move. Things Again then a beautiful it is now. I want to give value. I can only share in matter matter and energy equal curve. The fabric of space is the curvature the tells other matter. How to move in curvature, space itself and so Einstein juxtapose those in a poetic phrase where he said matter tell space out a curve like other matter, I wouldn't maritime space out a curve space tells matter how to move is beautiful night. That is being is beautiful, the sounds like the opening to a dance lesson. How did we get so? There's your those Europe
those privileges. Thank you. First, crushed thou match up that warmed up the betrayed her and now some more intense questions. Even this one is from Boston, Rodriguez or Roston, an Inn Can I add before he began, yes, that we too, as I'd make If physics in college and in graduate school my phd, astrophysics, but there's a course I never took. I regret it was all too hard for me at the time. It's probably saw too hard for me I rely on our support and I rely on others who, familiar in these areas, tell me what is and what isn't? I've never take a great taken, a graduate course in field theory and graduate fields. Is the full analysis of the forces of nature at their deepest and most mathematical levels and
I read about them, but I've never calculated with them. Ok, so if any these questions go there I'll just say I'd, I didn't I didn't take their class. Well, something you and I haven't common because with my degree in journalism and creative writing, I too did not taking field theory rocket pursued, yes, Roston Rodriguez. The question is: what is gravity fun. Mentally made up of is a result of some. Quantum phenomena or there any particle responsible for gravity. How fast gravitational waves travel through space and what decides the limit of that speed lot of questions. I love it when people, because that sounds like they do. They were burning Many couldn't get a sleeping late at get em off his chest pacing. I love it so so gravity before quantum einsteinian gravity was conceived before quantum mechanics was discovered, so I standing rallies nineteen Sixteen this is where matter
space and objects respond to their curvature? That's what we call gravity when Quantum physics came in. Where Everything was accountable as a particle wave duality. If you have something that our gravity waves Einstein predicts the existence of gravity ways than there ought to be a particle counterpart to that gravity, wave that we think we'll call it gravitons just the same way, any particles, any matter at all, will have a wave version of it from a quantum technical point of view: silk A gravity waves were predicted to move at the speed of light in Ireland. Equations and if you have a gravitas on the proper gator gravity of gravity that would also move it. Speed of light. So there you have it, but now we ve never detected a gravity where we were or direct
we have we detect, nor have we directly detected gravity ways, but have top people working on it. Why the laser Interflora metric gravitational waves observatory shortened why go is a multi location observatory that uses high technology lay. There is an error: four, where it did. It knows the distances between two points and long tunnels accurate to like the width of the nucleus of an atom so that if a gravity wave comes across, edit slightly giggles the space between these two measured points. It will measure it will know it, and that will be it will become the first detection of gravity wave passing across. So what makes gravity ways when gravity changes somewhere in the galaxy. So if you have stars worry and then they collide, then there's a ripple
in the gravitational waves continuum that out there and that's what you were then see if it's a star plunges into a black hole. These disturbances, in the gravitational field and those disturbances are the gravity waves they get measured. So we got top people working. We ve never measure them, but they predicted to exist not only from Einstein's special grab, a general theory of relativity his their gravity, but also from quantum physics, So we can detect, put not measure that I understand we can detect the existence of gravity. Ok, but rather time that propagated to know that that is, particle. They grab wave? That tells us when something got disturbed in the universe. Those have yet to be directly detected. We have indeed actually detected gravitational energy by two pulsars orbiting one another to have such high. Gravities at their surfaces Warburton near one another that their that stem is unstable, radiates gravitational energy,
and if you really rotational every than the system's orbits closer today, I did yesterday and as it keeps doing at the orbit closer closer and eventually just collide the measurement of binary pulsars, giving up the gravitational ghost led to a Nobel Prize in Physics. Joe Taylor and Russell House Russell House one of the Bronx High School of science, is eight, no, Laurie Athanasius, that's me as the country of Spain by the way this attic? That's that's crazy. And I now feel more prepared for that. Category on jeopardy would also have a question from Christian broke. Some fear as the gravity, is a side effect of the multi dimensional geometry space. But I have also heard talk of avatar particle, which we just talk about, is it possible that could be both if not
What is the more likely candidate for explaining gravity in Irving? It yeah. I think that the big challenge now but, as I understand, is going on in behind a string theory door which has occurred we close. They try to open it, and then you can go to strengthen you have no idea what they're doing behind their. Why really interesting thing is a cat and box and ran a whole different experiment, but there's more people and you you know you give em the room to think, and so I like that, give them to think. Well, I like that. What because they're not actually very expensive, they eat rooms, where people thinking exact rooms, rooms, a cheap, your brain, geographic up, thrown a pad a pencil and a laptop, and it too and tackling the strength, heiress, and let him go to town any problems with that, so it so in the world there there's gravity comes out of some other time.
Relations as I've come to understand. So that's a good thing because we know gravity exists and, as a you want your theory to explain at least what you, already now, but then come up with predictions too then test tested even more deeply. So here's a point. There is no reason to think that gravity does We also have a quantum manifestation of itself, because everything else has a quantum manifesto I never said I have a quantum. Yes, you do, but its very average doubt because your macroscopic entity, global economy average, I'm sorry I called you macroscopic macroscopic entity. That was the name calling that I engaged in so sure how to respond, and we know from small them how manner matter matter manifest in small and small size is that they can reveal itself is a wave as a particle depending on how you measure it and run the circle.
Answers under which you conduct the experiment. So it's not it's. A very human thing to say is that this isn't that Is it a planet? Is it not a planet? Is it? Is it less bill? Europe has a great task. Is it Gunnar is a candy? These are sort of false dichotomy, something can be done. But our language forces us forces us to look at. Why did it fit into one word or another. Ok, here's what we're not recognising! As that is not the fault of the object or the concept, is a defect in our language. Our thoughts follow language. We have trouble thinking of things that more than one category, I think, worse than most Emma Jane was sitting cultural elements are you gay, or are you not gay, where you blacker are you this? Are you die? You marmalade me me me: are you and it's like chill out just let it let you know just let things be what they are. Allow there to be a spectrum in all that you see
does that that doesn't necessarily just mean a broadening of language, but a broadening of the way. The human mind think I think that, once you learn language, the language shapes how you think more than your thought shape. What language does it takes a very creative person to start inventing words for thought tat they had for which no words applied. There's an age after which he thought of the word Ikey. Your thoughts constructed from meat of the vocabulary available to you, and you have to be very creative to have a thought for which no vocabulary to account and when you do That's how you invent new words in Shakespeare, put tons of words into the english language. Then the man had thoughts beyond all or it could start with. Saying I dont know how I feel an there comes. The experts
patients are finding that, where you have a typical, that's, not what people do they find a word that exists. Quaint adaptation force it into the words that exist, and then I passed the manifestation of their thought. So so I think most of the world, comes in flavors and not just is a your black or white, or up or down, and so is a swamp, even gravity swore quantum physics way more. Soft gave them lying like that. I have a question which I think is you almost touched on from Daniel? excuse me from Deanna ones. How closely related is The Higgs goes on to gravity what a further the standing of the Higgs? Give us a more give us more incitants gravity. I don't know any direct connection between Pigs, both on and gravity. What's interesting about particle physics. Is that good? but he is essentially irrelevant to everything that's going on down there. It is, as a rule,
Winter particle physics, as gravity is irrelevant to most insects, using in section for all of the wall or crawl on the ceiling. Annoyingly Sonya right, you do sake, YO, there's gravity! You should be following the ocean be in? Oh, so others, either at different sigh scales in the universe, different manifestations of the laws of physics, will predominate so for an insect surface. Tension of liquid matter there's? More than anything, that's why you have that the gene spider. Here we see the cheeses, colleges, spiders, cute and walks on Warner. I thought there's a dining combating three days now was at the third, Thirty, eight, while these arguments about what constitutes a day- and you know what it is too bad weekend, so that we can walk What are any sable? If I try to walk and water, if I'm not Jesus, I will fall through the surface of the water, because the insect is responding to the surface tension of the water which
if arrives the forces of gravity entirely entirely? That's why it's so the world of the insect his very different from the world of us and that's why you can't take an insect and make a human. Eyes version of it and have it have any success doing it was as an insect. So, alongside my movies, get that wrong one hundred percent of a giant sunshiny siders. There's a reason why there are no giants fighters think they have really thick rhinoceros. Legs and we call them a rhinoceros. You can't you can't just scale it up the laws of physics. It's all the same. Laws of physics, but it manifest differently. On your scale, see I was gonna, ask that. Does that mean insects have a different physics like to do other things, a little lab cultures, different different. You no results that we get there lab sighters. Would probably would not yet have discovered gravity,
real yes, so now, you're particle responding to your positive charge or negative chart naval electromagnetic forces, which are already orders of magnitude. Stronger than gravity forty orders of make forty powers of ten stronger so. In other words, you take an electronic proton and say well there, man that's. How much do they attract each other gravitationally? You calculate that right down that number. Now you do your equation for how much they are at one another, because they are of opposite electrical charge right down that number. The electrical charge force of attraction is too. To the fortieth power stronger than gravity. So if you are a particle, you would never discover the gravity exists, Well, if you had an experiment, they can measure to the accuracy to the precision of forty powers of ten. Then that is happening
nor my found not I'm so so I don't see any connection, if think could be some subtle particle physics correspondence. Don't know? But generally, when you talk about particles in particle physics, you not thinking about, then large scale gravitational phenomena Moving on here we have are we have so many questions are being asked. This one is from Ben Bonafont. It says if you were in deep space and there were no stars or planets or spaceships around or spaceships, just thrown spaceships fathom what items of small mass accelerate towards you noticeably or would the gravitational force be too small, you, what asking is, if I'm alone in Space- and nothing is competing with me for my
rotational traction. Would I start seeing everything drift towards me? The answer is yes, everything, drifts of gravity doesn't stop. And you want my force of gravity, as a human being is not very large, doesn't matter the little paperclip that this law I know my pocket of their digital start drifting towards me and says that it still be slow and not very interesting. But yes, so this is, the acute single guy that walks into the bar everything that de gravitate towards him or the single woman, because this is a our analogy bars or the cosmos trying to keep it real fundamental, be so this is the Europe we are coming, but everything I learned about the cosmos. I learned boy chairs a committee, what is ethically and walked into a boy because most according to it- and we will come back for the next twenty or more questions to answer any questions. This is start talk. Radio, we'll be right back,
gravity cast me and private sector, for you I'm gonna consider singing all of the ads on this shell there's just one. And where to get out of hearing there, go to patriarch arms last star talk and sub borders at the five dollar level or higher to listen. The star talk, ad free You can download all current episodes into your favorite podcast player and never we're here another commercial on star talk ever again. You will definitely not have to hear me saying if you support us at Patria, dark coms. Last our talk, radio, I mean I'm just thinking I mean just
green space inside it down to earth, you're listening to start Rebecca starts work radio, you know we're on the net on the internet. So, radio dot net. You can download archival shows there everything handcuffs I think we're all over the place. What's the other ones teacher and such a really very cool and start talk has a twitter. Ganz already does I interact with it of Unfrequent under direct. Yes, you guys tweet between no nine lines. I add you guys and European Board has unleashed twenty one might turn him. Will you please do it? Can heal Thyssen and he doesn't know that
everybody, people are people kind of itself. Will you be tweeting like cosmic? No, I caught suppose I could but and I just put your new stores they when it would mean what they wanted. Tweet current events in the universe, but this now, but I haven't events in the years when we get somebody to in the cosmos. Anything I'd like ours is immune to current events, but it's really just when I've random crazy thought. I just put another page Jenny. We are cosmic worries edition of start up? Yes, man, today's topic is gravity gravity, and I have not seen these questions are. You have called from our social media and I'd love to hear them so about. Although the US, I'm just gonna, come on, tell you ok, go. I have a question and I love this person's name. It's fits, omit fits. I'm sorry, Fritz omit fits wow. I do have to assume its real costs. Our families doesn't lie to us, no further, pretty cool. Look I omit Fritz omit fits either
No gravity is the weakest of the four fundamental forces he knew there remember from the West side. When I told you, how will the man is often the case? Yes fritz? You do happen in here: Hooker Doin, you, since the weakest at the forefront The mental forces is not just the weakest. If the stupidly weakest force, stupidly, which is not just weaker. It's not like. Or weaker than I am because I can bench press two hundred and you can bench press a hundred. Now it is you we can then, because I can bring about two hundred and you can't lift anything right. Well, maybe gravity is smart enough to get people to do the workforce. Maybe that's! What's going on all I will say the four fundamental for sounds like a raccoon from the sand and all our forces. No one man and you can see them coming out, dress the sank back. Then people used to dress the same temptations, the Supreme Soviet, so that that is a motel grief in the sixties. That was never
I've, never done more fundamental forces love. So what's it was the question? Ok, even though gravity is the weakest of the four fundamental forces, does it act on a large scale than say the weak nuclear force, in other words, is good. Really the only force that keeps a planet orbiting, a sun or to the other fundamental forces have a large Roland. So you soon, as everybody knows, what the other fundamental forces, while yeah I shouldn't- I would mean, after mentioned, for the purposes of baby, a co host to sir. We got gravity openly that with which we are most familiar the next month. Familiar force to us. Humans is the electromagnetic force. That's what hold your flesh together! Think of that makes magnets repel and stick that's why we have material objects in the world and other force? Is the weak nuclear for
and another force is they force within the nucleus of the atom that holds particles together? like protons. It pulls together, even though to- turns out. The same charge would want to do it like charges but towards what they did. My charges hang out again. An opposite charges attract like charges repel on finding of updating central that, I would like to be with someone who had similar interests. No gap is opposite charges, attract light charge, repair to cram to protons into a nucleus. You need something: make that happen because they want to how each other awesomely, and so we need a really strong forced to do that. It's called the strong nuclear force sell this the strong nuclear force, the weak nuclear force, electro magnetic leg electromagnetic somebody, woman and forest and then gravity which you say what disdain? Nobody funding with the weak
It occurred to me electromagnetism big issues. Electromagnetic force. But if you say electromagnetism, it sounds like a a political or cultural movement. There's vegetarianism I'm into electromagnetism, that's which has started movement. We other lettre magnetism, yes, and our opening active at your magnetic sitting, the four fundamental. So those are the four fundamental forces and to them actually in the nineteen seventy's were merged into one. There were learn to be different sides of the same coin, if you, if you go back into high temperature. High high density to those forces together and they become on, and the name of that course electroweak force, so electromagnetism an end. The weak nuclear forest, are manifestations of the same for so technically. There's only three force at three known forces forces in the universe budget, but this merging together, Steepling together forces that is set people. On a path to try to merge all the forces there saying if you work for two of them before
you knew about electromagnetism, there was electricity and there was magnetism and research in the night team centuries these are doing quoth what they said. They said that magnetism electricity were discovered but by Faraday and others to be the same phenomenon, but just measured in different ways. So handsome came where it electromagnetism so now Romania has a more merged with the weekly forcing through electroweak force. There you have it so really only have three forces so I've after you know? I forgot the question. Do you remember the person was ok does it act on a larger scale, also regret nuclear force or in other words its gravity. The only force that keeps a planet orbiting, the sun or the other fundamental forces have a large role. Yes, the strong and weak nuclear forces have very short range. The short nuclear forest drops off,
separately as you move, you go too far away from the nucleus. The end has no, it does not manifest at all. You can describe definitely force, let you can describe the strength of the forests as it is as you move away and if it goes to zero very quickly so so you don't have a universe of planets, guided by the strongly force. So now have asked the electromagnet If matter were not neutral, he would never know gravity and its presence is applied. Were made of negative charges and started orbit. It was made of positive charges. You never even know the gravity existed. That's how overwhelming the electromagnet force would be on operations of matter in the universe. It just happens that matter, not like staying separately charged, it will do all it. And two recombine negative chart
with positive charges to that's why we have lightning strikes thousands of strikes and was at every minute by weak account of all the likely lightning discharges in the world. I forgot the number but somehow the original, is going on all the time. Balancing dismiss this. This going out of of of equilibrium between positive and negative charges. It does not like staying out of out of balance so whole planets, not just exist as a negative charge thing. It's gonna find a part of the charge merge. You ve got a neutral planet. You don't do that instantly. Do you realize you could take, electrons the negative charged particles out of one big centimeter of the nose cone of the space shuttle special something we used to use to Tunisia, such as I've. I've heard tell what for our younger listeners out there. This is how the United States,
together with it. If you took out the negative charges, put it at the base of the Launchpad, which means that cubic centimeter at the Tipp of the is entirely positive charge. Now. Ok, you remove the negative charges from their positive put it at the base of the space shuttle ignite. Solid rock boosters and the main engine it will not be able to take off cassettes, misanthropy hits the attract, forests are those negative. Impositive charges will overwhelm the strength of those of those rocket engines, so you cannot put What are you? Those low jack knows that logic about you, you locked it by your reaction, did you prevented any one from steel going? You cannot stop the punishment. Is anybody out there looking on US cars, economic logic, further spatial, because there is such a hive fanciful
item. I modem Atticus, seeing you no regular market how committed adapted to my hand, I just take them out of the front and put it on the back and my car's not here that wherever it picture the especial on blocks specials upon blocks where someone stole up captures? But I love you, I love it. They could drive it away, so they could always strip it down. So what would have had why you did that is they would immediately reconnect with one another through electrical current moving through the space shuttle or a lightning strike. Bring them together in an neutralizes it, and then we take off so Only reason why gravity dominates the universe is because electromagnetism finds itself neutral. Now, Nearly all the time. That's the only he's my otherwise you, no gravity existed and be dominated by electromagnet course, so grannies not so weakened. Which leads me to wonder is there's some force. Forty orders of magnitude, weaker than gravity thick
not manifest in our lives, because we are swamped by the force of gravity itself. I lay awake at night, right now so alive there tonight, that's my job to that. You'll lose sleep based cause. I did. I wish I the questions of from den parental. Then Mr Thyssen himself, what is called the great a tractor? Does its force affect us and, if so, how? I love that the great attractive. I haven't been up on the latest research on the great attractive, but I was around when it was discovered and the great attractive if you out into the universe beyond our own galaxy. We live in the milky way and there's the drama, the galaxy and galaxies in a vertical cluster of that's what it what's defines the cluster, there's a bunch of other galaxies there and theirs general expansion of the universe which we measure in the speech
signatures of these galaxies. We got that yeah. The EU can also measure other movements of these gaps. He's by secondary methods and when you do this, this research showed that there is a whole field of galaxies. All with an extra bit of motion in one particular direction was called the great a tractor. Ok, it was mysterious, and so hence this had this mysterious name we called the great you, no sun, God or great Galaxy through the great a? And so I know it doesn't affect us at all. I mean with it just stuff. I see the galaxy and a drama or moving within our own mutual gravitational field. We will one day collide any drama on earth moving in the gravitational field of the sun. The sun is moving dragging the entire solar system with it in the gravitational field established by the galaxy, the galaxy
Andromeda, moving within our own mutual gravitational field. We will win they collide any drama and the milky way are moving within a general gravitational field of the Virgo super cluster of galaxies and just recently larger system of galaxies was discovered of which the Virgo Superman. There is just a park: oh dear no feeling more insignificant every day. That's my job that the job of the cosmic perspective is to convey to all of us that we are a small part of a much larger universe. What's I love the visual in Cosmo Sue the last minute The last hour of the last day of the calendar less sick animals. Well, I'm not I'm not even here yet. Regarding harrier, your urine been thought up, you can ever shot really. You sneak I'm gonna. Ah I have a question I will,
this question: is it mine it's from Mary Kathleen who is from Newark Delaware, yea, Delaware, early women have to first names, usually the guys. I thought Jesse James- does you want an actual counts culprit? Now there are one million two hundred and seventy five thousand five hundred in. Two or three visionary there. We got a sort of self America lean. Why is the milky way going to collide with the interim and a galaxy she wants to know? Why is she knew we were just gonna disguising well, we re turns out we're we're falling towards one another, so that kind of women love love at first sight we Pollack, probably finally, towards one another from the very earliest times in the universe? Is meant to be, and we think it was meant to be and by the way it'll be a spectacular train, but we will survive it for sure unless
lining we, the solar system, unless there's a sort of fly by looting of our planet's the stars are so far away from one another that they'll just pass through our stars of our galaxy will pass stars of the other. What what after one another are huge, gas clouds were stars are born. If one gas cloud collides with other. They will stick together like to harden marshmallows passing in the night and when they stick, they will ignite huge ways of start up of the birth of stars. And so colliding galaxies tend to be regions of heavy duty births of this star formation bursts of stars and what the rest of the stars were to slide back and forth they achieve a new equilibrium in a larger galaxy. That would be need of a new name because they too galaxies from which a came would exist no longer because they merged words while also yes, so what we ve been that way since the beginning
and we're close enough to one another. That expansion of the universe is not interfering with the fact that we are falling and then dramatists one of the few galaxies where we have motion towards one another, instead of all the rest of the girl, he's out there that are far away, where the manifestation of expanding universe overrides any local motion they might have with their neighbour got it. You got it the ever more We have a few seconds left in the segment. Well, she had another partner, a questionable had its gravity, override the expansion of the universe, she's lying on the case earlier, look a gravity wouldn't unless you're very close to one another, with a strength of gravity strong in my ear, when you're close, you feel the force of gravity to be hi and and way you are abound system, planets, orbiting stars Norman you gotta go orbiting one another, then expansion The first will not override you, and so that's why mere
I think you don't have to worry about the expansion. You'll have to think about the expansion of the universe when you're describing their motion relative to one another. So as an so in question were listening to start off cosmic queries. I'm with landlord on will be right back. Breathing space in science down to earth you're. Listening to start radio. More reintroduced
I do not know- is one of my favorite donors of our I need help people that your huge Stana comedy illegally and when I go public talks, are user? Are user Hanno microphone, yours? What you guys do and you very funny they know they say: do you want to use a lovelier? No, do you want a pen like no, I wanted to What do I want to have a relationship with my written with my acoustic device, Nan, frightened network, now interesting and now? Why do you do that? What does that do? For you as I wanted I'd like, have any implement I've I've tended? It was a spacecraft docking with me and I was an we would asteroid and I get to show to the audience. If I don't get my nothing's in my hands, my hands cannot be as useful to the delivery of content as they are wise would be. So that's why that's what so we are in cosmic queries. Addition has Montclair STAR Talk, topic gravity
right. I haven't seen the questions. I have sent a Mammy and by the way, in this segment, if we don't get too often We switch over to the lightning around this warning you up front. Ok, can we have a bell just for the purpose of looking girl. I have a question from Luke. Dickinson Dickinson does gravity pal anti matter does gravity exist. Those anti gravity exist, and where are the overboard? That's funny, because people or in the era of back to the future, they want to overboard, I'm old enough to have seen the nineteen sixties. I want the flying cars last he noted down scale you that's what that means that what that was long, it was brought to the future. Thank you think they know. I don't believe that they downgraded their expectations. They just have something else that look all that they could do and what the kids Sid. I want exactly
They didn't they found scale. Dont want all the blame. Nobody thinks of flying cars, to go joy, writing and then they think of them so that they would have less traffic. But anyone they can have a overboard. This group is ready to rock the off the slopes. Yeah, ok, so couple things gravity attracts anything though. Equations of gravity work, but when Anti matter was first predicted and then discovered, but we the physicists that before the Sci FI people got hold of it just so you know this set. The record straight anti matter is real, we ve had it since what Nineteen fourteen nineteen thirties, when, as predicted and then discover- and so we we gotta that where we got down one where you now and in the movie it what the damned brown stuff movie angels demons there than ever
can apparently has some vile of anti matter, and it was rare that we get that all the time we this like this, not either. I would destroy the world and they ve been the church had to control it dad. He could call me up and call on obtaining or something I don't know about even say on obtaining em you that will send me into an hour long ranch. You do not have time that another shot. It is so so so all I'm saying is, if you run the equations of gravity. They are such that it does not matter, What's the thing is that, following or even what its masses it will fall at the same rate as anything else. That's why heavy things for the same rate to earth has, like things do because the mass of the object divide out from the equation
that tells you how how earth attracts things to it. So it's a bit of fascinating feature of the math Maddox of gravity, any equations that describe it and if you want to get super geek, did I do you? Are you ready for this I'm not saying I'm ready, but I want to do with any before argue ready. This geeks only ok, anyone else, cover your only think, ready, I met ok. Isaac Newton equation for the force of gravity is massively for what first option times the mass. The second object, divided by the distance between them, squared that gives you the force of gravity between those two massively ok one times em too divided by the day. It's between their centres. Squared guy got that got it for us, one of those masses is earth. The other one is the mass of you Ok, I'm out of the force of gravity tat is your weight. That's how much you that
equation, give you your weight. How do you, Please wait you can either. Remove mass from the earth or remove mass from your body help help plausible was that start first, because I'm having a difficult time with options do so that is gravitational mass. Now I want to ask How much are behind? Will that object? Accelerate me so this Second equation weep, attributing Newton S, people's army for because a mass times acceleration? Everybody should learn that in high school, even if not physics, class physical science class, ethical airmail, I want to know what my acceleration will be in the presence of the gravity I take em, four, our squared set it equal to em times. And the third is the acceleration I experienced in the face of their grant, but I haven't am on both sides of the equation and that is that your am Europe.
M is on the right hand, side and, on the left hand, side of the same equation and in algebra cancel each other cancel each other out. So the acceleration of gravity on earth depends only we only on the mass of the earth and the distance between a centre of you in the center of the earth and has nothing to do with your mass. That's why Harry for the same rate as light things. So if you but with Anti Matter aunt Amy There goes and one sided equation and in the other sided equation and cancels out, he turned a man. So, even if something had anti gravity, it's gonna be accelerated to the object. At the same rate as everything else, as long as long as it has a mass that shows up on both even Anti mass. Even I am as a negative number whatever. That means its negative, the council's on both sides gathered there. You have it
me and girl twice my size, both get shoved off the top of the building or hit ground at the same time. Basically, unless she's really large and then have more air resistance and she'll be the chill show she'll have a terminal velocity. I have. If you get shovel offer twelve story building, everything can help you. I must get me a donor so did I just eight half of that segment. Talking Giving you that one answer- and we already like we only have like seven minutes left- I'm coming, Now it is time for The lightning round that ok, I didn't hear those did here. Mary go, ok, lightning! Well, let you, you ask me questions, I will give you sound bite answers which are Ike contains so many issues in because any time of interviewed on the evening news they can't listen,
your lecture. There's no time now. I gotta give a thirty second reply and it's all they want and are given more going to edit it to that. So here a hand you pre edited morsels of cosmic count. Four questions. You had better go question from Jason. Carry yes! What? What can we achieve? What the Newport propulsion technologies that would come from the hyper hypothetical element? Z equals forty five that possesses, entire gravity, anti gravity properties, the I've you have, if you actually some anti gravity propulsion device. It would always have to be sort of in front of you. Somehow, right and then you'll be falling towards it, but then you have to be constantly moving this thing for you, too far towards it site. You run into the problem of the sailboat where a person brings an electric fan onto the sailboat to blow air into the billows sail to move forward and gay
nature doesn't work that way, because the fan has a recoil forests plus. Where would you plug it in your cell? But but if you could battery opera the fund is a recoil forest that exactly will cancel anything it's doing to your sale, so we try to travel with some anti gravity attraction device in front of you. I don't know how you would keep moving it in front of you that takes the same energy would have taken beautiful towards it in the first place, you end up going nowhere, so I dont fully No, how you would make an anti gravity element, pull you. Across the galaxy, much less to the piggy wiggly. Ok go out to be color cowskin rising round reaffirm our I'd. How realistic is the idea of grab a gravity gun that was ass? I was realistic, as the idea of a gravity guy, don't know, forgive my ignorance, I wouldn't know what do you want a gravity gun to do what what what? What? What
What will it do to you? I don't know make you feel heavier. I dont mind Youtube aiming at someone. They could become so heavy their muscles, can't move their body and a sluggish and place them any go cover so maybe the gravity gun had I got it. The gravity gun as Higgs both on fields in it, and I because they expose on grants mass two particles, their argued that a good that's what it is. It's a break scalded God particle because its if you are particle, that's a you'd want to be granted the Higgs field grants ass to other particles, Higgs Gun, We had influenced the man, of what it is you pointed out, and you can make basically have them have no mass at all have so much mass. They can't even lift the own weapon there you go there we go. I think
a long way from such a wiki answers. This question remains peace, and then you will have to kill the person with the gravity, gonna last item Jacob, Martin complainants access and we were able to create and accumulate, and this blind and personal taxable very flat if we were to able if we are able to eight and accumulate enough of an extremely heavy material, something like element, one eighteen, but heavier. Could we create a gravitational for strong enough to affect tides, orbits, etc? Good, himself. Just because you have a heavy element doesn't mean when you make a solid object out of that element that that is heavy o because as the element decides how close to its neighbour it's going to exist in whatever it is, lattice that you have constructed so that in fact, the densest elements on the periodical are not at the heavy andor kind of in the middle. Like my favorite, dense It is as me, a cubic foot of osmium cubic foot just take
cubic put him off me and would make the world's best paperweight it weighs about one thousand eight hundred pounds in certain ways more than than small cars, twenty a cubic foot, so we do have heavy things. What matters here is not what the masses, but what? What Yes, mass matters intensity matters, but for stuff fit in your lab. No you're, not the gravity is not going to have that effect. You have to a lot of it and do we have enough material. You know how much total gold has ever been mine, gold is very dense as well. Much densher them lead to effect makes a better analogy to something be heavy than lead. Does you so I got it gonna, let foot when you do. Precisely where the coldfoot doesn't want of worth a lot oh he's heavier than lead. So gold gold is the total amount of gold ever mind in history. The world would fill a barn
that's it so you don't have that much of these rare elements to try to create so much of it too then try to affect tides. Where do the gravitational things to the earth give up on that one that would I didn't internet fast them from ninety minutes left Michael Jesus Shores. Ok, two minutes left gives a writer. I go this one. I love this one is this from twitter? How close to my business tourism no matter what their wigwams. I was another page, its Dave Steel Dave Underscore Steel, ok and the question is how close does my girlfriend have to be so that her force of gravity is equal to the force of ground, The closest star science, and I I'd have to calculate that, but I can tell you we have done this calculation for. I am going end on this because there are more people are following with what I'm about to tell you ok we have done the I have done, and others have done the calculation,
for the gravity of the obstetrician who birthday you and it's on you and when you do the math, the gravitational forest, the obstetrician on view the brand feed who just emerged is greater than the gravity general force. Good on you by the planet. Mars. Ok, but no one talks about in astrological circles the effects obstetrician new on your personality or on your sex life or social life or financial I've? No, I nod of an suppose. You were born with the open window and Mars was in the skies that you felt the light of Mars about that, but then What is the water s edge of the birthing lamps relative to the brightness of Mars? Compare and then you realize the folly of such products nature, interjected logic, where people just one feelings, sometimes
logic wings, that's all the time we have landlord. Thank you. Thank you. May I call you ve been listen to start talk. Lady. What do you in part by a grant from the Alfred Peace slowly foundation, I'm near the grass Thyssen's your host as always bidding you to keep looking? I am not job the organs wish. You could listen. The star talk, commercial, free, joint start talking. Patria for as little as five dollars per month and the ads will disappear. Learn more at patriarch dot com slap star, talk, radio
Transcript generated on 2020-01-25.