A Diary Of The Young Talents

Is Einstein About To Be Dethroned ?

Md. Shihabuzzaman Mollick


We all know the speed of light, right? Speed of light is 299,792,458 m/s (approximately 186,282 mi/s). Einstein observed that the speed of light remains constant and always have been underpins Einstein’s theory of relativity.
Recently, a team of scientists from England and Canada is set to challenge one of the Albert Einstein’s accepted theories regarding the classification of speed of light as constant, which means that light in a vacuum will have the same numerical value under any conditions. To be exact, it plays a role in models of what happened in the very early universe, seconds after the Big Bang.
But some researchers have suggested that the speed of light could have been much higher in this early universe. Professor Joao Magueijo, one of the theory originators, from Imperial College of London with Dr. Niayesh Afshordi from Perimeter Institute in Canada, has made a prediction that could be used to test the theory’s validity and began to challenge Einstein’s theory in order to solve a physics conundrum known as the Horizon Problem.
Currently cosmologists are getting ever more precise readings of this figure, so that prediction could soon be tested- either confirming or ruling out the team’s model of early universe. Their figure is 0.96478 which is very precise and this is close to the current estimate of readings of the cosmic microwave background, which puts it around 0.968, with some marginal error.
Professor Magueijo said, The theory, which we first proposed in the late 1990s, has now reached a maturity point- it has produced a testable prediction. If observation in the near future do find this number to be accurate, it could lead to a modification of Einstein’s theory of gravity.
The best way to explain the horizon problem is the inflation, suggesting that the temperature after the big bang even out before the universe went through the rapid phase of expansions. However, scientists have difficult time trying to explain why or how the inflation occurred and stopped.
Prof. Magueijo proposed that light and gravity may have traveled at different speeds in the beginning of the universe due to the uncertainties of the inflation theory. In order to reach the so-called temperature equilibrium, photons need to travel faster than the gravity, giving it enough time to travel into all parts of the universe.
To test out his hypothesis, Prof. Magueijo, along with Dr. Niayesh used a model to put an exact figure on the spectral index, or the record of early fluctuations in the speed of light that is imprinted on the cosmic microwave background, which commonly referred to as the map of the oldest light in the universe. So now it’s about time to change all.