# Homework Help: Young's Double Slit Experiment

1. Jun 7, 2012

### nesan

1. The problem statement, all variables and given/known data
Is this wrong or right? PLZ.

3. The attempt at a solution

http://www.kentshillphysics.net/optics36.gif [Broken]

I have a test tomorrow buy my teacher said it's m - 1/2

Why does it say n + 1/2 everywhere. >_<

Last edited by a moderator: May 6, 2017
2. Jun 7, 2012

### Villyer

What is m in this equation? (both according to your teacher and to the other sources you found)

3. Jun 7, 2012

### nesan

According to my teacher n is the number of spots from the center (dark or light).

Here's one of my other source.

http://farside.ph.utexas.edu/teaching/316/lectures/node151.html

4. Jun 7, 2012

### Villyer

From your source, m is an integer 0,1,2...
This means that the equation simplyfies into $(\frac{1}{2})\gamma =dsin(\theta)$, $(\frac{3}{2})\gamma =dsin(\theta)$, $(\frac{5}{2})\gamma =dsin(\theta)$....

From your teacher, the number of spots away from the center is n.

So the first spot would yield $(\frac{1}{2})\gamma =dsin(\theta)$, the second would be $(\frac{3}{2})\gamma =dsin(\theta)$, and the third would be $(\frac{5}{2})\gamma =dsin(\theta)$.

Do you see where I'm going with this?

5. Jun 7, 2012

### nesan

Oh I got it. :)

Tnx. :)

<3