3 ms·
My old analogy: Start with a barter society. Suppose one apple is worth two oranges, and one orange is worth three lemons. Then one apple is worth six lemons
by NY_USA_Hacker 15y ago
My old analogy:
Start with a barter society. Suppose one apple is worth two oranges, and one orange is worth three lemons. Then one apple is worth six lemons. So, say that one lemon is worth one penny. Then one orange is worth three pennies, and one apple is worth six pennies. So, we now have prices for everything.
So, what is one penny? It's a 'common ratio'.
My analogy is the same for time: One tuning fork vibrates at 100 Hz, another at 200 Hz, and another at 600 Hz. So, call one time 'tick' the time of one period of the 600 Hz tuning fork. Then the one period of the 200 Hz tuning fork is three ticks, and, of the 100 Hz tuning fork, six ticks. So, one 'tick' of 'time' is a common ratio.
Seems okay to me.
- Maro 15y agoExcept, what if I'm buzzing by your lab at speed c/2. What frequencies will I hear, what will be the relationship of my ticks to your ticks? =)
- NY_USA_Hacker 15y agoSame as always: All three tuning forks are close together in the same lab in an inertial frame, etc. You see the same ratios as the lab does. If you compare with some tuning forks on your space ship, then just use special relativity to compare the ticks on your space ship versus the ones in the lab. If the tuning forks are 'standard', say, some spectral lines, the you can see your time dialation.