I've been working on my Physics work when I scanned across a section and noticed something that bothered me.(adsbygoogle = window.adsbygoogle || []).push({});

The equation: d sin (thetha) = m (wavelength).

d is the separation and m is an interger.

However, it said to find the bright fringes of a double slit (Young's Double Slit Experiment), use this equation, and also to use this equation for the principal maxima of a diffraction grating.

Is there a difference? Are they just two different fancy names for finding the same thing?

Also, there's an equation I have to find: x ~ (wavelength)mL/d

x being position, m being an interger, L being distance and d being separation.

Is that related to the previous equation?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Young's Double Slit vs. Diffraction grating

**Physics Forums | Science Articles, Homework Help, Discussion**