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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.
Katie
August 31, 2025
I got the 500 lines/mm and it works amazing. Using an extremely narrow slit, I was able to see Frauhofer lines in sunlight (never look directly at the sun)I calculated that there are actually about 521.7 lines/mm. Make sure to check the value against a source with a known wavelength if you want to do quantitative applications.
Consumer Product Engineer
August 17, 2025
Inexpensive and accurate measure of light spectrum. Highly recommended.
anonymous customer
August 6, 2025
I used these with my chemistry students to create their own spectrometers when reviewing the electromagnetic spectrum. They worked well for differentiating between continuous and discreet light spectrums. They’re nothing fancy and you can’t get too specific of a read on them, but they work well for a basic lesson.
Kindle Customer
July 18, 2025
Very nice. Great for educational projects. Bright diffraction patterns.
Gary L. Roach
July 6, 2025
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.
David Bangs
June 17, 2025
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.
T. Campbell
May 24, 2025
There's a potential for confusion regarding how this product works. This is a "single axis" diffraction grating which means you'll see the point source of light ... and you'll see the rainbow "smear" of the color spectrum produced by that light which will appear both left and right of the point source. Hence the name "linear" diffraction grating because it's all in a nice line. However, you WILL need to hold this VERY close to your eye (perhaps an inch or so away) and will still likely need to look out to one side to see the spectrum. That's just the physics of how the prisms are working - not a product defect.One other caution... avoid touching the film with your fingers (or anything else that might leave any oily residue behind). The gratings are basically a 1000 tiny prisms in every inch. If you touch the film, your fingerprint oils will fill in the gaps between each micro-prism and that will prevent the light from being diffracted correctly.I use these to do explain spectroscopy when doing science outreach. In my case I start with an ordinary tungsten filament light bulb, but then switch to using gas tubes with various gas elements (hydrogen, helium, etc.)
Rae
May 12, 2025
The plastic lightweight and floppy in the mount. There are creases and bends in the material, which distorts the image. The slide is 1"x1.5", the mount is 2"x2". It's not even as large as one eye. You have to hold it so close to your face, that you can't read the scale. Cool idea, poor execution
Customer
April 30, 2025
Product came as advertised
Fernando Sanchez
March 28, 2025
La verdad funcionan de maravilla, puede ver el espectro electromagnético de varios gases nobles.
Torben Jensen
February 18, 2025
ok
W. Wilde
February 16, 2025
Entgegen meiner Befürchtung kam die Sendung tatsächlich sogar deutlich vor dem angekündigten Termin. Will man nur eine extrem dominante, annähernd punktförmige Lichtquelle "untersuchen" so genügt im Prinzip dieses Dia mit der Rillenfolie alleine und man kann wunderbar das vorhandene Spektrum sehen. Für komplexere Lichtverhältnisse muß man natürlich das ganze etwas aufbereiten und mit Lochblende und Fokusierung nachhelfen. Wellenlängen können anhand der auf den Diarahmen aufgedruckten Skala ungefähr abgeschätzt werden, für eine genauere Betrachtung der Wellenlängen wäre vielleicht das ebenfalls angebotene Papp-Falt-Kit anzuraten, welches eine Skala in das sichtbare Fenster einblendet.Eine sehr günstige und platzsparende Alternative zum Prisma - für den Unterricht und kleinere Experimente sollte dieser Artikel prima verwendbar sein.
protheus
February 3, 2025
Le produit est parfait mais attention une taxe de 9euros s'applique pour un produit qui coutait autant...merci le fisc!
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