My First Double Slit Experiment

[thenewmans]

Excuse me for patting myself on the back here but I just did my first successful double slit experiment. And it was easy! I poked 2 small holes in aluminum foil just as close as I could and shined my kid’s cheap red laser through them and Viola! I thought I needed razors and prisms and 2 lasers, but no. It took me about 5 minutes to get it right. Now I have to figure out how to get a detector by one of the holes.

 

[LaserMind]

Try reflecting laser light from a cd or dvd, you will
get very wide interference pattern, and only see 1 or 2
maxima. Also, strip the foil carefully off the cd
and you can shine laser through to get a very
good diffraction grating. The grooves are very close
- much better than you can get with a pin.

 

[Redbelly98]

This reminds me, I once read that you could make interference templates with photocopiers and using transparency paper. I imagine that could work with a printer as well.

 

[thenewmans]

Very Cool! That took about 5 seconds.

 

[Landru]

Now I have to figure out how to get a detector by one of the holes.

Is that really something a person can do at home on the cheap? Serious question.