How long is an electron transition ?

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SUMMARY

An electron transition generates a frequency emission defined by the equation u=E/h, where E represents the energy difference between two states and h is Planck's constant. The duration of this transition is typically on the order of 10^-8 seconds, which indicates a very brief burst of emission. Observing a single atom transition would yield a single burst at the frequency u=E/h, lasting for a duration of approximately 10^-8 seconds. This information clarifies the temporal aspect of electron transitions in atomic physics.

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owlal85
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Hi,
An electron transition generates a frequency emission u=E/h . In this case the electron moves from one energy to another.
My question is how long this transition last for each atom ?
If I was observing a single atom transition what would I measure ? A single burst at a frequency u=E/h ?
If yes, how long is this burst ? How many periods is it lasting .
This has never been clear for me .
Any material will be helpfull .
Thanks .
 
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when I was growing up the figure that I always read was 10^-8 sec (i.e. forever)
 

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