How can we know the muon?
The muons generated at a height of
km from the earth's surface move very fast at a velocity of
c (
% of the velocity of light). The muons are unstable subatomic particles with a mean lifetime of
µs. So, from a classical point of view, they should decay completely before arriving at the earth's surface. But in reality, the muons are found on the earth's surface. Which of the following can explain this phenomenon?
a) Because time passed slowly from the muon's point of view.
b) Because time passed slowly from the earth's point of view.
c) Because the distance to the earth's surface was shortened from the muon's point of view.
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1 solution
C is correct for sure. This can be explained with special relativity, and I think there are even videos on youtube detailing the solution to this exact thought problem.
B however surprised me, I only selected it randomly. From my understanding time passes at a constant rate for any particular observer so I'm not even certain what is meant by "Time passed slower for the Earth."
I hope the author will post to clear this up.