To add comments or start new threads please go to the full version of: C For Aliens
PhysForum Science, Physics and Technology Discussion Forums > Physics > Physics General

Confused1
CODE

|--|
O  .                     rem radius of a hydrogen atom

O  .<>.                  rem transition time for first ionisation of hydrogen atom

/||||   ||||\            rem we have ten legs

12345   67890            rem this is what we call them

->->->                   rem we're describing a velocity here

3297328                  rem c in a universally understandable form
rpenner
Do you have a source for the transition time for first ionisation of hydrogen atom ?

Even if you have a source that claims it is 5.8e-13 seconds, I doubt we have 7 digits of accuracy there.
Confused1
QUOTE (rp+)
Do you have a source for the transition time for first ionisation of hydrogen atom ?

Not at my feelertips but it was a component of early atomic clocks:-
QUOTE (http://en.wikipedia.org/wiki/Atomic_clock+)
[cached]
Since the beginning of development in the 1950s, atomic clocks have been based on the hyperfine (microwave) transitions in hydrogen-1

so I'm guessing there is a reasonably constant 1/f.
If you are heading in the direction of claiming 3297328 is not the correct value .. then I claim a success for the method.
-C2.
Edit .. ok hyperfine isn't first ionisation.
Edit .. I suspect the radius of the hydrogen atom is a far greater source of error .. but bow to your superior knowledge.
Edit .. you have a better suggestion?
PhysOrg scientific forums are totally dedicated to science, physics, and technology. Besides topical forums such as nanotechnology, quantum physics, silicon and III-V technology, applied physics, materials, space and others, you can also join our news and publications discussions. We also provide an off-topic forum category. If you need specific help on a scientific problem or have a question related to physics or technology, visit the PhysOrg Forums. Here you’ll find experts from various fields online every day.
To quit out of "lo-fi" mode and return to the regular forums, please click here.