Qualification > Sciences

hey guys physics cie help .please

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nid404:
I asked my sir, he said uncertainties cannot have more no significant figures than the value itself :-\

Amr Fouad:

--- Quote from: nid404 on April 21, 2010, 11:07:29 am ---I asked my sir, he said uncertainties cannot have more no significant figures than the value itself :-\

--- End quote ---

Thats what I exactly said

*Hope*:
Does any body know what is meant by phase difference?? like the correct definition??
and what is the difference between path and phase difference?? ???

Amr Fouad:

--- Quote from: lolo93 on April 21, 2010, 05:35:24 pm ---Does any body know what is meant by phase difference?? like the correct definition??
and what is the difference between path and phase difference?? ???

--- End quote ---

1) The phase difference between two particles along the wave is the fraction of a cycle by which moves behind the other. Usually expressed in terms of pie

2) Path Difference: Another method of expressing the path difference, but usually expressed in terms of of londa the wavelength.

Equation:
londa ----> 2 x pie

Then use proportion to find the missing term..

Eg: find the path difference when phase difference = 4 x pie

londa-----> 2 x pie
y------> 4 x pie

therefore y= 2 londa

Hope that helped :)

nid404:
phase difference= 2pi/ lambda  X path difference

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