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Old 10-06-2012, 10:19 AM
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sjastro
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Quote:
Originally Posted by Barrykgerdes View Post
Nothing is faster than the phenoma we refer to as the speed light.

A flash of light at a given point in time appears everywhere at the same time. It is our concept of time and space that makes it seem different.

If there is a "thing" called a neutrino it must have mass of some value therefore it can never reach the speed of light. The same goes for the "photon"

I am not a scientist but I know this to be true but I can't explain why.

Barry
Here is the explanation.

Suppose the neutrino mass is extremely small say 1 eV.
When the neutrinos reached the detector they had an energy of around 1 GeV according to the OPERA experiment.

Now 1 GeV/1eV = 10^9.

We can use this factor to calculate the theoretical speed of the neutrino by using the Lorentz factor in SR. The factor represents the increase in mass as the neutrino is accelerated towards the speed of light c.

1/(1-(v^2/c^2))^0.5 = 10^9

Solving for v gives v= 0.9999999999999999995c

The neutrinos travelled a distance of 732 km in the ICARUS experiment. The time difference between a neutrino travelling at 0.9999999999999999995c and c at this distance is 10^-12 nanoseconds.
This is way beyond the detection capability.

Rounding off errors results in neutrinos "travelling" at speed c.

Regards

Steven
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