Recent content by msk172

That's what I thought. System says that's incorrect, though.

Got it. Ugh. Too many hours of looking at this screen. Thanks for your time.

Well, 1.22 times the wavelength (1.5m) divided by D (295m) should equal θmin in radians, no? That is how I'm interpreting it, at least.

I understand that, but without knowing the length of the grating, how could one possible ascertain slits / cm?

Heh. Figured as much. I'll keep looking at it, and I'm sure it will come to me eventually. Thanks.

Homework Statement Light of 650 nm can be seen in three orders in a particular grating. About how many slits per cm does this grating have? Homework Equations Yikes. The Attempt at a Solution Either this question is ridiculously hard resulting in me not even having a clue...

Homework Statement The radio telescope at Arecibo, Puerto Rico, has a reflecting spherical bowl of 295 m diameter. Radio signals can be received and emitted at various frequencies with appropriate antennae at the focal point of the reflecting bowl. At a frequency of 200 MHz, what is the...

LOL. Disregard. Realized correct answer moments after posting. Thanks anyways!

Homework Statement A beam of yellow laser light (580 nm) passes through a circular aperture of diameter 4 mm. What is the angular width of the central diffraction maximum formed on a screen? (Define the angular width as the full angle from one minimum of the central diffraction maximum to...

Plus, you reference fringe width, but the question asks for number of fringes seen, not what their width is. Perhaps these two are connected, but if they are I am not seeing it...

I am trying like heck to follow the explanation you've provided, but have not gotten anywhere. I see what you mean about substituting the 2t equation in for t, but don't know where to go from there. Perhaps you could simply re-word in a fashion that would be slightly easier to follow? I do...

Homework Statement Two optically flat plates of glass are separated at one end by a wire of diameter 0.210 mm; at the other end they touch. Thus, the air gap between the plates has a thickness ranging from 0 to 0.210 mm. The plates are 15.0 cm long and are illuminated from above with light of...

Follow up: Figured it out. Initially thought of the question as asking about 5 maxima per side (thus 10 total). One maxima in the center, two per side, 5 total. w * 4 yields correct value.

Homework Statement Ramon has a coherent light source with wavelength 554 nm. He wishes to send light through a double slit with slit separation of 1.5 mm to a screen 90 cm away. What is the minimum width of the screen if Ramon wants to display five interference maxima? Homework...

Pshh. My fault, actually. No clue how the word "minimize" somehow translated to "constructive" interference in my mind. Hah. Thanks so much for your help.