PhysLink.com Logo
Back to School Sale
Back to School Sale

Question

How many oscillations does a caesium atomic clock make in a day?
Asked by: Joanna

Answer

Let us start with the definition of the second:

'The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.'

So a cesium atomic clock would make just over 9 billion oscillations_per _second (OPS). Finding how many oscillations_per_day (OPD) is just a matter of multiplication:

OPD = OPS x 60 x 60 x 24

Where OPD is oscillations per day, and OPS is oscillations per second.

So we find out that the number of oscillations per second is:

794 243 384 928 000

That's 7.94 x 1014 in scientific notation...
Answered by: Yasar Safkan, Ph.D., Sofware Engineer, Noktalar A.S., Istanbul, Turkey
xUmp Science eStore

Science Quote

Paul Dirac Photo

'A theory with mathematical beauty is more likely to be correct than an ugly one that fits some experimental data. God is a mathematician of a very high order, and He used very advanced mathematics in constructing the universe.'

Paul Dirac
(1902-1984)


- All rights reserved. © Copyright '1995-'2018 PhysLink.com