Recent content by MartinFreeman

Unfortunately the system only accepts correct answers, but does not accept wrong awnsers, So... i don't know. But it's good to know i did the right work. Il mark it solved , thanks for your help.

I have a feeling that maybe this question is much more complicated than my 3 step calculation...

Homework Statement A diffraction grating with 14100 lines per 2.54 cm (i.e., per in.) is used to view the visible spectrum from a Hydrogen gas excited by an electrical discharge. At what angle from the beam axis will the first order peak for the red photons with wavelength of 0.656 μm occur...

Thank you very much for helping me Doc I've managed to get the solution

Can i simply ask you how to arrange the equation?

Sorry for wasting your time , Il just skip it

X cancels itself though , 38.44 +x^2 - x^2 = 2.3409m 38.44= 2.3409 . .

is it possibly, sqrt( 6.2^2 + x^2) - x = 1.53m? now I'm stuck for sure.

thanks again for responding, I am not to sure how I'm getting a quadratic, The relationship I've come up with is this , r2-r1 = lamda /2 r2= BP = sqrt( 6.2^2 +x^2) r1 = AP = x path difference = 3.06/2 ~sqrt (...

thanks for responding Doc, however I must admit that I am still no further in understanding how to get to the first destructive point. Going from your quick series of questions , this is what I have come up with ( and I have a feeling I've made a mistake ) The path length between AP and BP is...

Hello everyone! I'm Martin and I am a student in Canada going through a science stream pre university program. I'm interested in this online community as I can offer and hopefully receive help from fellow students. I hope to enter an engineering program in about a years time. ;)

Homework Statement Two antennas located at points A and B are broadcasting radio waves of frequency 98.0 MHz, perfectly in phase with each other. The two antennas are separated by a distance d= 6.20 m. An observer, P, is located on the x axis, a distance x= 60.0 m from antenna A, so that APB...