I don't think it was in my course book!
What is the velocity of gravitational waves?
The answer is 3E+8.
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2 solutions
@Swapnil Das ...For additional info, name a hypothetical particle that is predicted to travel faster than light, and could solve the problem of time travel.
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Am I the only one who thinks discussing about Time Travel in this comment section is bizzard? Can't we come together at one place and discuss instead?
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Well, i don't mind talkin in a note...:)
just posted a note 'Let's talk'...come on there
Tachyon? Is it?
How I wish Tachyon existed =]
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They surely will! Whatever comes in a theory is surely in practice one day or the other!
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@Swapnil Das – I'm skeptical about it, because if Tachyon is to be found and that mean time travel is possible...Why haven't we met someone from the future yet?
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@Yashwanth Manivannan – A good question indeed!
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@Swapnil Das – There's more.
If Tachyon isn't found there will be no way to travel back in time, in fact if it actually existed and moved in the opposite direction (i.e towards the past), we must have spotted it too.
Tachyon cannot exist for another reason (Don't mind my imagination), because of a strict rule enforced in the future preventing people from going back in time, but rather go forward in time.
or
The Tachyon was already found by one of us from our time period, but was assassinated by the future humans, due to their greed and jealousy. (Terminator =P )
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@Yashwanth Manivannan – Haha, LOL!
@Yashwanth Manivannan – Hehe...Terminator kicks ass, no doubt. But you can't rule out tachyon on the basis that time travel is not possible
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@A Former Brilliant Member – So I was correct ?
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@Swapnil Das – No what i mean is that... @Yashwanth Manivannan said that since time travel is not possible, so tachyons don't exist. But, let's look at the facts...first off all tachyon is not the only particle to allow time travel. "Simple" (:P) time warping can help, which is a different topic. So tachyons might exist.
@A Former Brilliant Member – But Tachyon arises substantial amount of doubt for me...
Like, if Tachyon is faster than light, and it moves opposite to the direction of light, (Even big bang started with a star that emitted light) , it goes to a place of no light. What then? We never existed then, and even when we do exist, Tachyon is far back into history.
Same thing with the future, since it travels faster than light, it reaches time periods before us. Given that (hypothetically we all die (Don't worry Humans are quite stubborn) we all get destroyed, even at the last moment, Tachyon would have been out of reach.
If you try to observe Tachyon, it would have moved to the next time frame before you even see it. The question is not if it exists or not, what matters is why we can't study it.
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@Yashwanth Manivannan – See, this is what i'm talking about. Have you heard about the theory of multiverse and bubble universes?
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@A Former Brilliant Member – Both of them, read a lot about them.
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@Yashwanth Manivannan – Yea so...although the theory (along with the theory of supersymmetry) is still not accounted for, still...there might be some universe, in which our basic assumption and knowledge of space-time fails. So, no general relativity and hence, tachyon could be found!
@A Former Brilliant Member – Of Course!
Good piece of info! upvoted!
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Thank you sir!
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Please don't mention sir, I am just 14 years 6 months 7 days old!
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@Sravanth C. – So, I am 14 years and 5 months old , sir!
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@Swapnil Das – What's your DOB, Mine is 06/11/2000
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@Sravanth C. – 5/12/2000, and as always I mention, the 99th birthday of Werner Heisenberg.
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@Swapnil Das – Cool . . . .
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@Sravanth C. – Haha, U know Heisenberg?
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@Swapnil Das – Well the uncertainty in position and momentum must be proud of your birthday @Swapnil Das , lol
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@A Former Brilliant Member – lol, as well as proud to share the birthday of a nobel winning physicist!
@Swapnil Das – Honestly, I searched google for it! I didn't know him.
So at last, it gets detected!
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Finally!! Its just soooo amazing! A theory we thought, will remain a theory...cannot be proved by any effort mankind takes. The best discovery happens, when I am still alive!
And its been 9 months since our discussion....wow.
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True that. I never thought gravitational waves will be detected in my lifetime.
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@Swapnil Das – Exactly. Still, schools are going to teach Newtonian gravity instead of Einsteinian gravity (or Bohemian Gravity). What a pity.
The answer is simple as we already know that the velocity of the gravitational waves is equal to the velocity of light.
Gravitational waves are one of the greatest predictions of Einstein's theory of general relativity. They are predicted to travel at the speed of light!
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