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 Origin SineDamp fit shows incorrect period		  New Topic  Reply to Topic
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Decimal

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Posted - 11/23/2016 :  09:14:40 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hello,

I am trying to fit data achieved from a Ruchardt experiment (https://en.wikipedia.org/wiki/R%C3%BCchardt_experiment)

The experiment produces data resulting in a damped sinewave. I used the SineDamp fit to pull the period of this oscillation out of origin. The period or W paramater value, according to origin, is equal to 0.48. However just by visually analysing the sine wave I can see that the period should be double that.

Does anyone know what I might be doing wrong?

Thank you

Echo_Chu

China
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Posted - 11/24/2016 :  01:00:33 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi

Please note the definition/equation of SineDamp, w = period/2, w is not equal to period.

http://www.originlab.com/doc/Origin-Help/SineDamp-FitFunc

Echo
OriginLab Technical Service
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Decimal

2 Posts
Posted - 11/24/2016 :  04:42:06 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
quote:
Originally posted by Echo_Chu

Hi

Please note the definition/equation of SineDamp, w = period/2, w is not equal to period.

http://www.originlab.com/doc/Origin-Help/SineDamp-FitFunc

Echo
OriginLab Technical Service




Ah I see now, well the fit was definitely correct then. Thank you!
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