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by forgotmyoldacc
1615 days ago
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How does it compare to a diffraction grating that costs $2? Quickly Googling this I found: https://www.homesciencetools.com/product/diffraction-grating... One of the reviews on that page mention implementing a spectrometer: > The 1,000 lines/mm Diffraction Grating Plastic Film was used to make a high resolution optical spectrometer. First, the film was removed from its paper 2" x 2" card stock. The crystal clear film was next glued to an optical ring that was mounted in front of a very inexpensive 1,920 x 1,080 pixel webcam. The modified webcam was placed in the back oRead more about review stating Using the 1,000 line/mm Diffraction Grating in a Spectrometerf a pinhole camera-box and mounted at an incident-angle to the incoming light beam. In this configuration different light sources could be introduced to the new spectrometer and their light spectrum captured using a USB-computer input. Thus, a wide variety of light sources could be fully analyzed at a resolution of about +/- 2nm. Using this very inexpensive (1,000 lines/mm) grating, coupled with an equally inexpensive webcam, a high resolution optical spectrometer could be built for under $25.00 |
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This is a prominent US supplier, and they offer a lot of useful info at their site:
https://www.gratinglab.com/Home.aspx
With all that said, the plastic grating is a very cool thing, and with it you can demonstrate pretty much all the basics of gratings and spectrometers.