Recent content by animecrazy

yes. the filament lamp would give off radiation in all directions, so the area would be a sphere, using the distance from the lamp to the LDR as the radius to calculate area. and it's ok, i found some average values

one query - part d) the range and precision of any instruments that would be used: what is the average range and precision of a standard digital ammeter? or voltmeter?

Intensity = power/area :P simple really

there are several formulae for diffraction gratings that can be found on the net. unfortunately i can't really help you, as i ignored them all and devised my own formula - it works fine but not many people would use it, so it could be seen by the examining body as collaboration. try wiki?

i too have this assignment, and reading through this thread I'm confused by the how you all seem to be overcomplicating the intensity ^^ the formula is simple also, you'll want to use diffraction grating to calculate the wavelength of light passing through each colour filter, as you'll have to...