Collision frequency unit conversion

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Collision frequency is measured in collisions per second, which is conceptually similar to hertz (Hz), as both represent events per second. However, while they share the same dimensions, they are not the same unit. For instance, the becquerel (Bq), used for radioactive decays, also has the same dimensions as hertz but is a distinct unit. Therefore, while collision frequency can be expressed in hertz, it is important to recognize that they are not interchangeable units. Understanding this distinction is crucial for accurate scientific communication.
s_hy
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hi all

I have a question about unit for collision frequency. The unit is collision per second and is it same with hertz?

Thanks
 
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Yes.
 
To elaborate: a "collision" is not a physical quantity, so it doesn't have a unit. Which leaves you with frequency (Hertz), which is actually a kind of artificial unit (derived), since it is any event per second.
 
s_hy said:
hi all

I have a question about unit for collision frequency. The unit is collision per second and is it same with hertz?

Thanks
They have the same dimensions but aren't necessarily the same unit. For example the becquerel .the unit of radioactive decays (1Bq is one decay per second), has the same dimensions as the hertz(1Hz is one cycle per second), but is not the same unit.
 
Vagn said:
They have the same dimensions but aren't necessarily the same unit. For example the becquerel (the unit of radioactive decays) (1Bq is one decay per second) has the same dimensions as the hertz(1Hz is one ycle per second), but is not the same unit.

Yes, sorry, Bq and Hz are different units, same dimension (different name for the same concept).
 

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