The Meaning of Special Relativity in a Wave with Medium (2)

But unfortunately, this gentleman is no other person than your boss. He is so confident with his swimming skills, if you are to tell him that his speed is less than c, you will certainly get yourself into trouble. So you have to tell him that something is wrong with the clock or the ruler, and ask him to try again after you have fixed it.

How should you fix it?

Mathematically, there are numerous solutions available; but physically, you have only three options: using a slower clock, using a shorter ruler, or changing both the clock and the ruler.

Solution 1: A Slower Clock

time fix

Solution 2: A Shorter Ruler

length fix

Solution 3: A Slower Clock and a Shorter Ruler

time fix 2

length fix 2