Michio Kaku: Intergalactic "G" Mail

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5 окт 2024

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Комментарии : 295

@chriscodisco8215 5 лет назад

“Sometimes it takes up to twenty minutes for a signal to go from Earth to Mars and then another twenty minutes for a message to come back. You certainly can’t carry on a conversation between two people this way.” HA you should see my friends on Messenger

@Tessasdadd0 11 лет назад

This exact same thought came to me a few weeks ago. It actually seems like a practical application.

@aerohk 10 лет назад

Those who thought quantum entanglement is the answer, you are wrong because there is no way to predict let alone control the location of the electrons. It can transfer information faster than the speed of light, but won't be able to encode anything useful. That's most likely why Dr. Kaku didn't even bother to bring it up.

@abhinavsaroj9250 9 лет назад

***** he has explained that in some other video.

@deadlykitten6546 6 лет назад

yeah and just tens of years ago the most authority scientists scoffed at the idea of being able to get usable energy out of nuclear reaction

@FiFiFilth 10 лет назад

Ehm, I'm not a specalist on that matter, BUT I read a few articles, in which it was stated, that some particles can "communicate" instantly with each other. If I recall correctly, there was some sort of experiment in China, in which some sort of atom was spread out multiple miles. It was then measured, that these pieces of the atom would know the condition of its counterpart, without any time passing by. Could anyone who knows what I talk about enlighten me on this matter?

@frederf3227 9 лет назад

FiFiFilth Entangled particles made in a way that if you learn one state the other becomes known instantly as the other state. It's not communication though since you can't control what state you collapse the first to and so the other person at a distance can't extract meaning from the result of his particle.

@1846drte2342342 10 лет назад

Quantum entanglement!

@raterallowance3445 3 года назад

U can't really send information through entanglement

@thenigglefish2682 Год назад

Based

@OdiusTV 8 лет назад

Michio kaku knew about gravity waves before it was even discovered! He is like einstein.

@WrProgamer 11 лет назад

Well, time to measure if the speed of gravity is actually instant or limited by light. Would be interesting

@Coreyjamescampbell 12 лет назад

@Consolized As Michio said, the impulse of gravity is believed to move at the speed of light. That means that if the sun went out of existence this moment we would not be aware that the gravity source was not there for 8 minutes(time it takes for light to reach earth). Black holes "bend" space-time, light passes through that space where it follows the curvature of space ...

@dmurvihill 12 лет назад

"Einstein is the cop on the block." Truer words were never spoken.

@Obi-WanKannabis 11 лет назад

the difference is: When people said speed of sound couldn't be exceeded, there already were stuff that would go faster then sound. The bullets on the weapons could go faster then sound. Not the case right now, because we know of nothing that can go faster then light

@VulpisFoxfire 11 лет назад

The problem being that as yet there's no way to actually *use* entanglement in any practical way to transmit information...we can detect the two entangled items change at the same time, but no real way to actually *induce* a specific change to convey information at the other end.

@naryanr 11 лет назад

This is probably the most though-provoking video so far. I always wondering about the long-distance communications thing. According to the laws of physics, even in 10,000 years, a race of super-advanced ultra humans populating the majority of the solar system, STILL won't be able to ever have a quick conversation with themselves on other planets in ANY WAY whatsoever. That's sort of depressing.

@VulpisFoxfire 11 лет назад

Core problem is that even if we can figure out how to use the thing in a practical manner to communicate over vast distances, we still have the basic problem of transporting the thing those same vast distances in order to use it to communicate in the first place. If we could transport it in a timely manner...we likely wouldn't need it in the first place, just use that same transport method.

@bumbixp 12 лет назад

You know what also travels at the speed of light ...light, and light is already used for communication and travels trough the vacuum of space for an infinite distance ...like from a star several light years away.

@THR33SHOES46and2 10 лет назад

I watched an interesting video on waters ability to absorb frequencies. They proved that if given a certain frequency it would produce perfectly symmetrical ice crystals when flash frozen. Upon exposing it to another frequency it appeared distorted and boil like. Splitting the same water to two sides of the earth and when one ½was exposed the other half without the frequency still mimicked the response instantaneously. Faster than light transfer of information. Something to be pondered by people much smarter than I.

@orbital1337 12 лет назад

Exactly, information can not travel faster than the speed of light.

@schabe 12 лет назад

It's called radio. Radio waves never stop moving and since we have broadcast them, they have been travelling through space. Radio waves travel at the speed of light in a vacuum.

@raiders81tim 12 лет назад

We already have. Back in the 70's. Voyager Golden Records.

@keenkennyny 12 лет назад

Interesting...I never thought gravity actually had a speed.

@JustAskQuestions 13 лет назад

@dsdougharty True, but I think he was trying to say there's currently nothing practical (for communicating the Mars rover for example.) By the time we can entangle enough particles to contain enough bits to stream live media reliably (assuming we also invent quantum computing), we might as well have teleportation or some other super-futuristic solution.

@TheDavidRokkedahl 12 лет назад

Yes, and the sun would, according to our perception, still be there for another 8 minutes with all it's "perks" ie. gravity. Thanks, you made it easy to understand

@ManintheArmor 11 лет назад

That was a mismeasurement from last year, resulting from a GPS error.

@orbital1337 12 лет назад

Think about it this way: we rotate around the sun at a distance of about 8 light minutes. If the sun were to suddenly disappear it we would happily continue to follow our orbit for 8 more minutes. The gravitational pull of the sun would take 8 minutes to disappear. This is what we mean by saying that gravity moves at the speed of light - the information of a change in gravity travels at the speed of light.

@CBSonPc 11 лет назад

What you are saying about the jet, has two very different value variables sound(340.29 m / s) and light (299 792 458 m / s) this difference in speed is why when a jet passes you see it before hearing it. But if the situation with the planet that you're describing were to happen, the effect of gravity would happen at the speed of light, because gravity as we know it travels at the same speed as light. So the influence wouldn't be later, but would be at 299 792 458 m/s.

@Treblaine 12 лет назад

@Consolized Light CAN pass "by" a black hole, where it will just be bent like the light in a prism. It's just once light (or anything) goes IN it can never - ever - leave. OK, the energy can get out by certain tricks (Hawking Radiation) but that's not really light actually leaving.

@mckennm6 12 лет назад

The messages do travel at the speed of light(radio waves are light), but mars can be up to 250 million miles away, which takes light about 15 minutes to travel(each way).

@maloney670 12 лет назад

Well some years ago, when we wrote letters, it took days for them to arrive.

@llamawizard 6 лет назад

Not to be confused with the intergalactic G-spot.

@omgtkseth 12 лет назад

@VTOLAircraftMad he has explained that entangled particles cannot carry our information, only random information. entangled particles would transmit noise, not our code input.

@bdiddy77777 12 лет назад

since mass/gravity curves space-time, the trajectory of light is influenced by the curvature of space-time, and not by the gravity itself.

@manmayogamer 12 лет назад

one day this guy is going to implode and become a being of all knowing

@lampar20 11 лет назад

Never mind. it's called Quantum entanglement or so called spoky action at a distance :) Basickly you just don't know when an electron moves on it's own or when it transferes information. Basickly it's just way to random if you do not know what and when you expect to see it. But this is not totally out of the question :) ... yeeey learned something new today xD

@Carpenter4134 13 лет назад

I would've loved it if when he snapped, the sun really disappeared and everything was chaotic in the video and he was flippin shit.

@guappoo7503 11 лет назад

Entanglement not" psychic" link. Also we have entangled light too a group of gas molecules. We also measured the speed of entanglement between two photons. It is much faster then the speed of light, but "it" is not information.

@ettje 12 лет назад

@Consolized dark holes are made of dark matter along with gravity. Put it this way, black holes works as a vacuum cleaner in space.

@SentientTurtle 11 лет назад

1:02 "But along comes Einstein, 'Not so fast'" Lol @ that pun.

@Salien1999 12 лет назад

Moral of the Story: The Sun could have blown 7 minutes ago and you still don't even know.

@Thepockets88 12 лет назад

@Consolized this is a really good question and it would be awesome if Michio Kaku tried to provide an answer

@liquidmetaltech470 11 лет назад

even if gravity did act instantly it wouldnt matter, you cant move matter or light faster than the speed of light, so therefore you could not possibly get the gravity of anything to change faster than the speed of light.

@TBMonkeys 11 лет назад

Two bodies resonating in unison transmit information instantly.

@chukaz1 13 лет назад

if you think of space as a none empty place you can push an object in one side(a pencil per say) and instantly the other side knows it moved.

@technatezin 12 лет назад

Gravity probe B measured the speed of gravity to extremely high precision.

@WhatTheFarson 12 лет назад

That's comparing two different things. What he's talking about is more along the lines of this: let's say a star is twenty light-years away from a sensor that detects both light and gravity. If that star were to spontaneously disappear, the sensor would not detect the absence of the star's light for twenty years, but the question is, would it take twenty years for it to also detect the absence of the star's gravity?

@orbital1337 12 лет назад

Uh, no. Energy (mass is a type of energy) creates the curvature of space-time. Gravity is the consequence of this curvature, namely that things seem to attract each other (in fact it's a bit more complicated than that, things can do all sorts of things due to gravity). Light is attracted by other objects because the curvature of space makes things attract each other - it is influenced by gravity. The other effects of the curvature of spacetime are also called gravitational effects.

@mckennm6 12 лет назад

Quantum teleportation could bring us faster than light communication. It might work through photon entanglement. Photons can be measured as either a particle or a wave. With the right setup of entangled photons, its theoretically possible to affect how one photon is measured by choosing to measure its entangled counterpart as either a particle or a wave, which sounds a lot like a binary system to me. Hell, we wouldn't even need to modify computer technology that much to take advantage of it.

@merlinjacob7343 6 лет назад

Isn't the phenomenon of gravity actually caused by matters distorting the flat space ? If so, shouldn't the speed of X's gravity wave travels depends on the quality of X ?

@VulpisFoxfire 11 лет назад

Or to put it another way, at best we have 'We'll be able to speak over a light year away...in about 5 centuries or so, if we start today.'

@Sanchitto987 12 лет назад

Except that the force of gravity also "travels" at the speed of light as well. So it would also take 8 minutes for us to observe the face that we aren't orbiting a Sun anymore.

@bbugarschi 12 лет назад

I assume that once we better understand quantum entanglement, we will be able to communicate faster then light maybe even teleport

@PhilSentMe 11 лет назад

The problem is you're thinking in 4 dimensions. The universe has 11. If it's possible for us to manipulate and bend the 5th just a little bit and then actually detect it, or fold the 4th, it could be used. Currently we only know how to bend the first three, and are incapable of practically achieving it to any significant scale yet.

@YangSunWoo 11 лет назад

I have no idea what you guys are talking about, but maybe the vibration is not random, maybe it has a pattern that can be learned to normalize the vibration for human consumption.

@mace9930 5 лет назад

It should be possible to construct a device or packet of information that exists in a balanced state of unity. One requirement for this involves actually knowing what blocks of information and energy are, and how they dovetail with each other in a comprehensive sense. Mathematics may be helpful in this endeavor. Imagine that the building blocks of energy/info, once combined into an aggregate, can lead to a coherent, interconnected state that is tapped into unity. All blocks of energy/info must cancel out to a unified state. It is a bit like assembling an advanced puzzle. It would be beneficial to be able to plot the progress of the puzzle, using mathematics, because the pieces would manifest dynamic energies when brought into contact or correlation with one another. Creating a balanced puzzle state would enable instantaneous communication, using nullified blocks of energy/info for transmission. The unified, timeless realm would be the conduit. The dualistic nature of language is thus the barrier that must be breached, when elements are brought into harmony and unified, the conduit to unity is revealed. Hemingway said: "write the truest sentence you know". Did he sense that there is an underlying truth within the words themselves? What would a true, unified statement look like?

@Yaered 12 лет назад

ya, nothing can't travel FASTER than the speed of light, doesn't mean that an object can travel AT the speed of light. Yet in other dimensions, if they do exist, can change that law.

@kangoroo0123 13 лет назад

Mr. Kaku, Could it not be possible to use quantum entanglement as a means of sending information through space? It would be hard to do, but even now we are able to entangle atoms, and couldent you encode information into a vibration, and make one atom vibrate, the vibration instantaniusly go to the other atom, and have a machine pick up the vibrations of the atom and turn it back to information? From a loyal fan

@BeachofDreams 12 лет назад

It would not happen - relativity would prevent it. Gravity would have to pull to such an extent that time would slow, thus preventing light from moving 'quicker' than the speed limit.

@1piecemage 12 лет назад

entangled particles indeed do travel faster, but its just "random" information

@Marazish 11 лет назад

It's not about it being information but the ability to use it to relay information. Binary is a series of Ones and Zeros. ON and OFF. If you were to assign left as One and right as Zero, then have the rotation change axis every other signal to avoid errors it should work... I would think anyways. If you were to use many, you should be able to send data in chunks similar to packets over the internet.

@TheLuckyIrishson 12 лет назад

Can't send information via entangled particles as their state is random upon observation or something along those lines. Sorry if this has already been answered (and probably a better answer as well).

@starfox300 12 лет назад

@LeVonDanE it would be faster, however what he tried to say is: If even light and gravity waves need 8 minutes from the sun to earth then there will never be an intergalactic communication system that is instant.

@Coreyjamescampbell 12 лет назад

@Coreyjamescampbell ...which is "bent" so that photons moving along tangents to the photon sphere will be trapped in a circular orbit of zero thickness just outside of the event horizon. If is possible for light to escape the photon sphere due to tiny disturbances within a black hole, however if a photon passes the event horizon, escape is impossible. I believe that the ...

@LeVonDanE 12 лет назад

Wait, why can't we use light? What if we had a type of device installed on a satellite traveling deeper into space that could put off a different colour for every word. And what if on Earth we had a device that could translate those different colours back into words? And then vice versa so that we could communicate back and forth with it. It would travel at the speed of light. Wouldn't that be faster then using the type of wave signals that take up to 40 minutes that we use now?

@Sanchitto987 12 лет назад

Yeah, but we wouldn't notice the loss in warmth and energy for a good 8 minutes, since that is how long it takes for it to get to the Earth from the Sun.

@taijiangah 11 лет назад

What about telecommunication with paired particles? Theoretically speaking of course.

@garytill 12 лет назад

we might be able entangle two particles, encode the data on its spin and read the effect on its entangled partner millions of miles away. sure its not currently possible to measure the entangled particle accurately without changing it by observing, but it should be possible in theory... right?

@Tessasdadd0 11 лет назад

You entirely missed the point. Of course we'd have to travel those distance in order to transport the entangled particle. That is obviously assumed. The point is to accommodate communications between humans who are separated by vast difference, where ordinarily they'd have to rely conventional modes of communication to travel which could take hours, days, months or even years depending on the distance. Theoretically communications would be instantaneous with quantum entanglement.

@GuernB2 12 лет назад

quantum entangled particles used to convey a form or binary through moments of the particles quantum bits

@Obi-WanKannabis 11 лет назад

we could use it as a binary source perhaps. if it's vibrating, it's a 1 if not it's a 0

@THR33SHOES46and2 10 лет назад

If anyone has a moment or two just a couple things. First off concepts you guys have are giving me athletes scalp from going over my head so much. Brilliant people such as yourselves have always impressed me till i see boobies or something shiney. But when I watch some of this genius stuff I get questions that may or probably may not be proven or obvious or fookin crahp! I was trying to wrap my brain around the concept of quantum mechanics. Just what the definition was mind you. And it said that it was impossible as it stands to predict where this particle would reappear or when and when it would jump again and how far. No pattern just a random dance. Now when I read that. Uh did not even try to grip in the brain pan. Scene a video as it was being explained again and I kinda grasped what I was looking at. The word string theory was used. And that is exactly what went through my mind when I seen that particle jumping around. Have you ever seen a guitar string plucked and as its slowing down it starts to come together formed ovals,then cicles then the appearance of stillness. Now look at it with a strobe light or a timing gun it does that exact same dance depending upon speed of light and frequency of string. Its the exact same string existing in all those possible spaces at the same time, but appearing in a seemingly random place. is this rudimentary knowledge? A stupid concept and I'm WAY off base. Or lucky shit that took a simpleton to bring to light?

@insidetrip101 12 лет назад

@Talis116 I don't know for sure, but my guess is by sending some electromagnetic wave some distance and "timing" it. I have absolutely no idea how you would go about syncing this up and compensating for relativity. It seems like a mathematical nightmare to me.

@marcelosinico 12 лет назад

Interlaced photons could do the trick. One here, one over there. If one changes its quantum state, the other does the same at the same time. Distance doesn't play a part in this trick (already proven). There, we have intergalactic telegraphy.

@pieman250 13 лет назад

What if we had the ability to generate a small wormhole just big enough for a photon to go through? Yes the amount of energy requiring to do such a thing would be enormous, but that would be solved after cold fusion comes along (and that alone would solve many problems). With this you just need to have relay satellites orbiting around the sun and the other planets to make a web connection of these small wormhole generators which could be used to send our current digital information faster.

@xerxe212 11 лет назад

In the past it was believed that the speed of sound cannot be exceeded. Yet, here we have supersonic airplanes. When we understand our universe better, perhaps we'll be able to prove that the speed of light can be exceeded as well.

@Yaered 12 лет назад

sure we could find some way to just test how fast gravity affects an object, but there could be other factors involved, we just don't have the technology yet to eliminate the factors. Im definitely sure they have tried to measure the speed of gravity, but it was just inconsistent, should look up some articles as of why they can't simply measure the speed of gravity. They will give you more of a clear answer than i can give.

@Joel11111 11 лет назад

Well considering that that any particle with mass is incapable of MATCHING the speed of light, let alone exceeding it, and that any particle without mass always moves at the exact same speed, the speed of light, I think it is safe to say that no information that is useful to us can move quicker than the speed of light. I say "useful" information because quantum entanglement allows random information to be sent quicker than the speed of light.

@orbital1337 12 лет назад

The general theory of relativity is currently the best theory of gravity. The theory of the Graviton is entirely hypothetical in an effort to combine the 3 other forces with Gravity. There is absolutely nothing that tells us that it "must be caused by a subatomic boson" - right now the Graviton-Theory contains some major holes and is even more incomplete. Besides to our current understanding of particle physics the Graviton is impossible to detect anyways.

@DreadNought0255 12 лет назад

I think a grand majority of people on the planet would LOVE to hear that Einstein's theories are incomplete and FTL speeds are possible. With the exception of those physicists who have to make sense of it all then.

@Coreyjamescampbell 12 лет назад

@Coreyjamescampbell ...impression that the light should be able to escape since it travels at the same speed as gravitational impulse is believed to is confusing you. Gravity and gravitational impulse are two separate concepts. Gravity, is a natural phenomenon by which physical bodies attract. Gravitational impulse is the change in the gravitational attraction.

@FinalDriveGame 11 лет назад

So what you're saying is that if the sun did suddenly go poof we wouldn't be very confused why we're falling out of orbit. Since light and gravitational waves travel at the same speed.

@TinyFoxTom 12 лет назад

@VTOLAircraftMad You still need to send the particle at finite speeds to the intended destination, and you can only send one iota of information which immediately disentangles the two particles.

@miketh2005 12 лет назад

We have computers that don't freeze. You just don't have one (obviously).

@leerman22 13 лет назад

I thought Entanglement traveled faster than light.

@UniverseIsAwesome 12 лет назад

@robertus911 What about quarks? Up quarks and its cousins all have [positive] 2/3 charge and down quarks and its cousins have [negative] 1/3 charge. A proton would have 2 up quarks and 1 down while a neutron would have 1 up and 2 down. Doing the maths, a proton would have a positive 1 charge and a neutron 0. Those two sub-atomic particles are formed from the same quarks, just in different combinations.

@Offireandshadow95 12 лет назад

Uh, we wouldn't. There would be no indication that the sun was gone. until such time as we stopped seeing its light. But good news is we would definitely know the moment the light stopped reaching. The amount of time you would have to live would be directly tied to the heat loss of the atmosphere, unless you were near a geothermal source. Then it would rely more on the quantity of food and water you have.

@orbital1337 12 лет назад

If you think light isn't affected by gravity then please how Einstein's well-tested general theory of relativity is pretty much completey wrong. Gravity doesn't change the speed of light but it can change it's velocity and due to the effect of gravitational time dilation you can also observe a shift in the light's frequency (a blueshift in this particular case).

@CBSonPc 11 лет назад

Eh... Though it could be possible. It's highly unlikely that we could harness that power to use for communication. By the time we where to harness Quantum Entanglement on a large scale for communication or computing, we would have most likely solved the original communication problem we were faced with the the beginning.

@LeongWeiCheng 12 лет назад

why not just make light go faster? As in use gravity and make it pull toward the same direction the light is heading so that the light is pulled toward the gravitational force and thus being accelerated?

@XyiSti 12 лет назад

Michio Kaku can win a game of Connect Four in only three moves.

@FelixMaxwell 12 лет назад

@randomtwit So I did some looking into this and if it isn't something that limits the actual transfer of information, the limiting factor would be that when you observe the particle, it is collapsed into the observed state. So, if you wanted to receive a message, you would need to know when it was sent and have as many entangled particles as the length of the message.

@Rhomeozon 12 лет назад

ya I know voyager but something faster, something that can get out of our solar system faster and something that can go to flying speeds

@frost414 12 лет назад

@VTOLAircraftMad; Entangled particles currently can't be measured in a way to collect information as we know of. It has something to do with quantum theory. I'd say what I think is a correct explanation of why this is, but I'd rather not say anything than be totally wrong.

@TheDavidRokkedahl 12 лет назад

Correct me if im wrong, but you can't put one speed on gravity. To estimate a certain speed of gravity you need a vertain amount of mass. Doesn't that sound logical? On earth gravity is stronger, than on the moon. Isn't that becaus of the varying masses of the two celestial bodies? Now to say, that gravity moves at the speed of light sounds untrue, at least it does to me. If I'm wrong then please enlighten me

@yanava 11 лет назад

Gravity waves have yet to be detected, so right now Einstein's theory is good to predict stuff, but it could be blatantly wrong. I have a hard time grasping the fact that if the Sun and the Earth were the only objects in space, and we removed the sun, Earth would still have weight or feel gravity from the now extinct star.

@porrsmurfen 12 лет назад

What about quantum entanglement? I've heard it mentioned in the context of communication before, but I've never really seen anyone elaborate about it.. Since the connection between two entangled atoms is instant, wouldn't this be a viable means of communication?

@Rhomeozon 12 лет назад

the thing about voyager is it can get destroyed at any moment

@tgoyer 12 лет назад

Lasers are... light. Thus travel at the speed of light. :)

@TheAllannist 12 лет назад

speed of thought? scrap it, nothing comes to my mind. does it mean.. are we stuck?

@jayti1827 5 лет назад

Hhmmm?... Gravity travels at the speed of light? Can someone please explain this?

@dvalentino7492 5 лет назад

We time travelers from the future can look back with smug indignation.

@zimcub 12 лет назад

@tkoizumi Michio said in another bigthink video that it's impossible to control the vibration of the quantum entanglement because it's always random.

@InsaAhromee 12 лет назад

@Banadoora If they could figure out how to control it that would be a major breakthrough in superluminal communications though. I remember in another one of Dr. Kaku's videos he mentioned that we already have the ability to teleport photons, which relies on the phenomenon of quantum entanglement. Because photons can carry information in a sense, this information could be instantly transferred and used as a communication source.