Stig Östlund

lördag, maj 07, 2011

Albert Einstein was right, say scientists, 100 years on



After working for half a century and spending £500m, scientists last week revealed that they have detected strange fluctuations in Earth's orbit. Space-time is bent and then twisted round our planet as it rotates, announced researchers with Nasa's Gravity Probe B project.

The effect is tiny but crucial, they added – and was predicted almost 100 years ago by Albert Einstein in his great theory of gravity, general relativity. According to Einstein, an apple falls to the ground not because it feels the force of Earth's gravity but because the apple is responding to the curvature of space-time near the Earth's surface caused by the planet's huge mass. In the same way, the Sun bends space in a manner that allows Earth to revolve around it.

Read more >> http://www.guardian.co.uk/science/2011/may/07/scientists-prove-einstein-right

General relativity or the general theory of relativity (Wikipedia) >>
>> http://en.wikipedia.org/wiki/General_relativity

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