On 6/15/2025 3:15 AM, John Clark wrote:
On Sat, Jun 14, 2025 at 11:20 PM Alan Grayson <[email protected]>
wrote:
On Saturday, June 14, 2025 at 6:07:46 PM UTC-6 Brent Meeker wrote:
/> How do you think atomic clocks (the standard for the second)
keep time?
/
On Sat, Jun 14, 2025 at 11:20 PM Alan Grayson <[email protected]>
wrote:
/> Atoms have structure/
*But electrons have no structure, and the decayof an electron from a
high energy orbit to a lower energy orbit is what an atomic clock uses
to keep time*
No, the time keeping function is the frequency the photons absorb, not
the decay or absorption rate. The one used as a standard uses the
cesium-133 transition between two specific energy levels that emit
photons with frequency 9,192,631,770 Hz. The atoms are excited at this
frequency by a microwave emitter which is adjusted by a feedback loop to
match this frequency.
*, so they really should be called electron clocks. How does an
electron know when it's time to emit a photon and move to a lower
orbit? Nobody knows, but we don't need to know to make a clock out of
an electron if it is near the nucleus of a cesium atom.*
/> and definite transition frequencies, /
*And muons have a definite decay frequency.*
They decay at random with a certain*average* rate.
Brent
**
/> Moreover, since you're the one who believes the muon has a
clock, the burden is yours to define what it is, /
*I've already defined what a clock is, it's athing that measures
time.And I have no obligation to explain how a muon clock works, I
just need to demonstrate that it exists. In a similar way our
ancestors didn't knowwhy a sundial could measure time, all they needed
to know is that it did. *
/>How does observing a decay translate into reading a clock? AG/
*Huh? We know from experiment that the mean lifetime of a muon at rest
is 2.1969811 ± 0.0000022 microseconds, and you don't understand how it
would be possible to use that fact to make a very accurate clock? *
*
*
***John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
7gu
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