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Need help in understanding phase angle/difference in A level physics. 
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#1
Feb2612, 07:05 PM

P: 93

I understand what a phase angle/difference is, but when it comes to applying them in questions (from past papers) my mind draws a blank. Can anyone here in simple terms, explain how can I draw lets say a phase angle difference 'precisely' of a wave in a graph?
Additional details : I am in AS level right now, so please go easy on any advanced mathematics. And just as a heads up: We have just learnt a sine graph in math aswell as radians( so I know a whole wavelength is 2∏.) 


#2
Feb2612, 07:08 PM

P: 93

http://www.xtremepapers.com/CIE/Inte...2_w02_qp_2.pdf here in question 5 it says " draw the variation with time t of the displacement x of the point in wave T2" So see, while I know phase angle of 60° means T2 lags behind T1 by 60( less than ∏/2 or 90°), I have no idea how to draw it. . 


#3
Feb2612, 10:26 PM

P: 3

The phase of a transverse wave is how far it has been translated or shifted. Think back to algebra when we translated graphs of lines by adding and subtracting numbers.
In this case, a phase of 60 degrees results in a shift of ∏/3 radians or 1/6 of a wavelength, being that one wavelength = 2∏ = 360 degrees. If the wavelength of this graph is 3 units then it will be shifted by .5 units to the left (T_{2} drags behind T_{1}) 


#4
Feb2812, 07:50 PM

P: 93

Need help in understanding phase angle/difference in A level physics.



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