Go to Home Page
You are here
Go to Reference Section
Go to Directories Section
Go to Community Section
Go to Fun Section
Go to Science Store
Go to About PhysLink.com
Club PhysLink
   Not a member yet?
   Get Free Membership
   Username:
   
   Password:
   
    Remember me
   
   Forgot your login?
Top Destinations Menu
 Ask the ExpertsAsk the
Experts

 Physics and Astronomy Departments DirectoryUniversity
Departments

 Discussion ForumsDiscussion
Forums

 Online Chat Online
Chat

 FREE Einstein eCardsEinstein
eGreetings

 PhysLink.com Science eStoreScience
eStore

Community

Chikrii Word2TeX Software

Click here for a free 2-week trial

Become a Sponsor


   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


go to the top  
Advertisement:



All rights reserved. © Copyright '1995-'2004 PhysLink.com