Experiment #1 (interference)

Interference
Is light a wave or particle? That is why interference is so important, or at least that's why they teach it in school. But hidden inside of this seemingly simple experiment the realm of quantum theory starts...
Here is a 5 min video on the subject from the movie What the Bleep Do We Know?




One way to create an interference pattern uses:

• light source (preferably a laser)
• 1 needle

When you shine the laser at the needle, you should see a pattern of light and dark bands; this is interference. The bands are tiny so lean in and look closely!

Interference