Review on Enhancing Science Education with Rainbow Symphony Diffraction Grating Slides by Donnie Boss
The devil is in the details.
Plastic is easy and flexible to assemble. The material has folds and creases, which distorts the image. Shutter 1"x1.5", Bracket 2"x2". It's not even the size of an eye. You have to hold it close enough to your face that you can't read the scale. Great idea, bad execution
- Comfortable
- Older model
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