Uploaded March 2022 | Updated September 2026, 2 weeks ago

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Learn what diffraction gratings are and see me use one to get chocolate to reflect white light as a rainbow. (This method should also work on other shiny, stampable materials.)

This is the diffraction grating that I used. Note that it is NOT labeled as food grade, so I do not condone eating the chocolate or whatever else you melt onto it: amazon.com/Robs-Super-Happy-Fun-Store/dp/B00SK3S6BY/?&_encoding=UTF8&tag=chemnut-20&linkCode=ur2&linkId=ceced7d9f74f602f54356fef83ceefa2&camp=1789&creative=9325
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Time Stamps:
0:00 Introduction
0:11 Constructive Interference
1:47 Destructive Interference
3:21 Wavelengths
4:01 How Diffraction Gratings Work
6:19 Turning Chocolate into a Diffraction Grating
7:40 The Results: Rainbow Chocolate

#chocolate #diffraction #chemistryeducation