I believe that when a photon is refracted it slows. Why is it that the wavelength decreases but that its frequency stays constant?
Does this imply that the photon has not lost any energy in the process of slowing down given that E=hf?
Thanks
I believe that when a photon is refracted it slows. Why is it that the wavelength decreases but that its frequency stays constant?
Does this imply that the photon has not lost any energy in the process of slowing down given that E=hf?
Thanks
thanks for your reply. Having now looked at the examiners report, and bearing in mind this was 2021 when things seemed to be up in the air exam wise, I think they wanted you to justify - so if you said something along the lines of 'looking at the plan view into the page' or 'assuming the pointer...
I use FLHR and the plan diagram. This suggests that the left hand side of the coil is going down. I have added annotations to this, which agree with the mark scheme which then goes onto suggest that the coil turns clockwise. To me though this would make it go anti clockwise.
So... what am I...
I think I understand that points P and R are pi radians out of phase - reaching their max/min at the same time.
But are P and Q in anti phase?
What is antiphase exactly - is it when they are 180deg out of phase - or is it when they are anything other than totally in phase? I seem to find...