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Your cart is empty.Diffraction Grating Slides-Linear 1000 Line/mm. Our Holographic Diffraction Gratings are highly efficient embossed Holographic Optical Elements (H.O.E.). Diffraction Gratings are used for the direct viewing and analysis of spectra from different gas tubes and other light sources. The quality of the spectrum produced from our gratings is the brightest possible with a minimum of distracting visual noise. Our gratings are the principal component in a spectroscope and are used for experiments pertaining to the study of light and color. Project a spectrum using an overhead projector or 35mm slide projector for spectrum demonstration purposes. Use in conjunction with colored film gels for additive and subtractive color demonstrations. 2" X 2". IMPORTANT: Minimum order for this item is 50 pieces at .40 each. To receive the quantity discounts advertised, you must add the quantity you're ordering to the quantity box on the order page.
Consumer Product Engineer
Reviewed in the United States on September 12, 2024
Inexpensive and accurate measure of light spectrum. Highly recommended.
Gary L. Roach
Reviewed in the United States on November 4, 2024
While the items were received in good condition and seem to work as advertised but the film is loose in the holders. This causes the film to not be flat. I think if you cut the film and attached it to a microscope slide it might work for more precision work.
G. cone
Reviewed in the United States on November 4, 2023
Colors are hard to see.
gjschissler
Reviewed in the United States on May 8, 2017
These gratings work well. I received 25 gratings as advertised. and I'm glad I did. I only needed a few gratings for DIY spectrometer I was making. 4 or 5 of these gratings had either some nasty fingerprints or some sort of dust/dirt. The rest of the 20 were acceptable. I saw some other offers for a little less money but only for 10 gratings. The rejection rate is high but if you receive 20 out of 25 usable ones it was just fine with me
David Bangs
Reviewed in the United States on October 3, 2015
These are great for understanding how lighting works. If you look at an incandescent light bulb through the slide and a little askance, you see a stretched out version of the light that looks like a rainbow.But if you look at a fluorescent source, you instead see multiple copies of the fixture in discrete colors (shades of red, green and blue) that reveal that the light comes from phosphors that emit these colors. Even if these lights claim to be "full spectrum", the actual spectrum is a discrete sampling of frequencies which together let us see as if the full spectrum were present. Various industrial lights, such as metal halide parking lot lights, have unique and identifiable spectrums.If you want to tell one type of light from another, these slide are infinitely more portable and cheaper than $5000 electronic meters! That said, people don't immediately get the knack of looking askance at a light through a slide. A fancy meter will work better for customer presentations.
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