Why did Einstein think that we can't travel at the speed of light?

Answer 1

He didn't. In 1676 a fellow named Olaf Roemer noted that the time elapsed between eclipses of Jupiter with its moons became shorter as the Earth moved closer to Jupiter and became longer as the Earth and Jupiter drew farther apart. This anomalous behavior could be accounted for by a finite speed of light. He calculated that the speed of light was something like 2.14 x 10^8 meters per second. The actual speed is closer to 3x10^8 m/s, but considering the time at which the measurements were done this is reasonable.

Einstein hypothesized that the speed of light is constant for all observers.

Answer 2

Einstein's theory of relativity shows that as an object with mass approaches the speed of light, its energy and momentum increase infinitely. This implies that an object with mass would require infinite energy to reach the speed of light, making it impossible for anything with mass to travel at that speed.

Answer 3

I think because Light must reach its destination fast.

Let's take Earth for example,if light was moving slowly,humans would suffer months maybe years of darkness and all plants can't live without light,that would cause major consequences

Answer 4

In a nut shell E=mc^2 it will take an infinite amount of energy to accelerate to the speed of light since there is no such thing as infinite energy light speed in impossible however you can manipulate the space time continuum to travel faster than light.

Answer 5

Light is fastest because it is made up of particles called photons which have no mass. To speed up an object, you have to give it energy. The theory of special relativity predicts that to make an object with mass travel at the speed of light would require an infinite amount of energy, which is impossible. Thus, nothing with mass can travel at the speed of light (and, therefore, nothing with mass can travel faster than light).

As a side note, all massless objects (including gravitons, which mediate the gravitational force) travel at the speed of light.

Answer 6

He did not. The first serious attempts to calculate the speed of light were made in 1676 by Romer and then Huygens but their estimates were not very accurate. But Newton, around 200 years before Einstein, worked out the speed of light to an error of less than 2%.

Answer 7

Dr. Einstein never said that.

He merely predicted that your mass increases as you move faster, and your mass becomes infinite

at the speed of light. This prediction has been observed, measured, and confirmed thousands of

times over the past 75 years, in laboratories all over the world. But if you think you can gather

enough fuel to accelerate yourself to the speed of light while your mass keeps increasing, and then

accelerate yourself to a higher speed when your mass is infinite, then by all means, go to it !

Answer 8

Einstein did many astonishing things but even he could not have figured out the speed of light 17 years before he was born! Leon Foucault in 1862, figured out the speed of light within just over 0.5% of its true value.

Answer 9

The speed of light was widely and accurately known before Einstein was born.

Answer 10

Because nothing is really ever the same