If in one day someone travels, and fifty thousand years earth time passes, what speed what that be?
Tia
Virtually yours, Virtually Yours
Well, depends upon the speed at which he travels. If he travels at the speed 299792.458 km/sec, this person would be really flying.
The speed of light in a vacuum (c) is exactly 299,792,458 m/s. What you’ve described is a time dilation factor of 18,262,125:1, which will require traveling at very nearly c. In fact, the answer is so close to c that you’ll need a better-than-average calculator to be able to calculate the difference.
The time dilation factor equals the square root of 1 - v^2/c^2.
Hence 1 - v^2/c^2 = 1/333,505,209,515,625
then v^2/c^2 = 333,505,209,515,624/333,505,209,515,625
c^2 = 89,875,517,873,681,764
so v^2 = 89,875,517,873,681,764*333,505,209,515,624/333,505,209,515,625
thus v is approximately 299,792,457.9999995505430658077200192142171044 m/s, which is about 99.99999999999985007730442166452766531951946% of c.
Mostly true, however that answer would be ineffective during a leap year.
In one day you travel 18,250,000 days?
That premise contradicts itself.
You are probably trying to play some game involving Special Relativity, which (accurately) predicts the phenomenon of time dilation.
Play some game? I asked a question that’s all. I understand at the speed of light if you travel a certain amount of time, time on earth would go faster, so for like a few years travel at the speed of light the earth would age thousands.
I just asked the question the other way around giving you two times and asking what speed would you have to attain for time to speed up like that
Ever heard the term “time travel”?
Close enough for the OPs purposes.
The OP reads quite clear to me, one day of travel time equalling 50 000 years of time on Earth.
sbunny8 are you saying that basically the speed of light was described with the day/50,000 years question? or close to it? wow
I got the formula for the question for the Holy Quran:
The angels and the Rûh [Jibrael (Gabriel)] ascend to Him in a Day the measure whereof is fifty thousand years, (Al-Ma’arij 70:4)
And verily, a day with your Lord is as a thousand years of what you reckon. (Al-Hajj 22:47)
So according to sbunny8’s answer the speed of light was described 1400 years ago in the Quran through Prophet Muhammad.
How could he know this?
Would this work for any number over 100 or just 50,000? tia virtually yours
Nothing written in this thread supports that conclusion. What in those calculations has anything to do with this quote?
It would work for any number between 1 and infinity. I.e. for any time dilation factor greater than or equal to 1, there exists a speed at which that factor is attained (1 is, of course, attained at a speed of 0).
No, because as the time dilation factor rises v asymptotically approaches c. Thus, there is a speed v that makes true the time dilation factor 1 day/50,000 years, 1 day/100,000 years, 1 day/50 million years, or anything else. The Koran did not predict the speed of light.
Nope. That’s nonsense. What comes out of the formula based on your interpretation of this as time dilation is the time dilation factor 99.99999999999985007730442166452766531951946%
The “close to the speed of light”-result comes when we multiply this by … the known speed of light.
And we’d get results sufficiently similar with a very wide range of values replacing those in the phrase “to Him in a Day the measure whereof is fifty thousand years”. For instance if the phrase was to Him in a Day the measure whereof is a fortnight, we’d get 99 % of the speed of light. If it was actually a prediction of the speed of light, and not a meaningless ratio, that would have been a quite impressive prediction as well.
In fact this is nearly as unremarkable as that guy in the other thread who discovered that multiplying a number by ten gave you the same number shifted and with a zero at the end. (He did a few more steps than just multiplying by ten and claimed it only worked for a single number, but that’s still what he was doing.)
The time dilation factor equals the square root of 1 - v^2/c^2, where c is the speed of light in a vacuum: exactly 299,792,458 m/s.
When you’re traveling at one half the speed of light, the time dilation factor is sqrt(1-1/4) = sqrt(3/4) which is approximately .866025 hence for every 24 hours spent traveling in a starship at one half c, the amount of time which passes back on Earth is 27.712813 hours.
Traveling at 90% of c, the time dilation factor is sqrt(1-.81) = sqrt(.19), approximately .435790 hence during 24 hours of ship time, 55.059776 hours would pass back on Earth.
At 99% of c, the factor is sqrt(1-.9801) = sqrt(.0199), approx. .141067, hence 24 hours ship time is 170.131489 hours Earth time (7 days, 2 hours, 8 minutes).
At 99.999% of c, the factor is sqrt(1-.99980001) = sqrt(.00019999), approx. .014142, hence 24 hours ship time is 70 days, 17 hours, 6 minutes Earth time.
So far, we haven’t even come close to the 50,000 years result the OP asked about, just 70 days. We need to really bump it up closer to c. We need a time dilation factor of more than 18 million to one for that.
None of this is predicted by the Koran. The OP acknowledges that when you travel at close to the speed of light time slows down (which was not explained in the Koran), and asks, hypothetically, if you wanted to achieve a time dilation factor similar to that describe metaphorically in that particular passage of the Koran, how close to the speed of light would you have to be going? And the answer is about 99.99999999999985% of c. By the way, this would be totally impractical for any reasonable-sized space ship large enough to actually hold an astronaut. The amount of energy required would be ludicrous, probably more energy than all the stars in our galaxy put together. In reality, the only things that ever go that fast are microscopic, like subatomic particles for example. So you’d have to figure out a way to shrink your starship’s mass down to the mass of an electron, and yet still have an engine which can supply mind-bogglingly huge amounts of energy to move the ship.
Here’s an article about someone who uses the same argument to show that the New Testament predicts the speed of light Circling Around The Speed of Light | ScienceBlogs
My estimate is to accelerate a space shuttle to that speed it would take the same amount of energy as the Sun emits every 15 minutes or the energy contained in the mass of an asteroid a few kilometres across.
There is at least some evidence that building a spaceship capable of such energies may be possible.