Michelle Thaller
speaker
1,835 appearances
1 recordings
1 series
first heard May 2026
last heard 28 May
Michelle Thaller’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in May 2026 with 1.
Appearances
What does it mean to make a clock?
What are we measuring?
I mean, we've... I don't know if I have an answer for you.
I don't think anybody does.
But here's the deal.
So the clock in Einstein's experiment...
So the clock has, you know, two mirrors and there's light bouncing between it.
And that's the distance that it travels in one tick.
Right.
But now you put this mirror, you put that clock on a spaceship and the spaceship's going really fast.
And as it goes by, you see that clock, as it streams by you really fast, you see the light make this motion.
And this line is actually longer than that line.
This line, if you measure it, that's actually a longer line that I drew than the original one between just the two mirrors because now it's at an angle.
And this is what made Einstein say, time has to change.
If anything moves, the tick of a clock changes.
However you measure time, whatever time is, whether you measure it with a bouncing clock or whether you measure it with a vibrating atom like we do in the Bureau of Standards, or whether you measure it with a spring that's slowly unwinding in a wristwatch,
Anything you can do to measure one moment to the next changes when motion is involved.
There's no way to get around it.
It's not just the measurement.
It's time itself is changing.
Showing 401–420 of 1,835 · page 21 of 92
← Previous
Next →