Diffraction Grating Slide-Linear 1000 Lines/mm 2x2"-Pack of 10

Not what I expected, but fun, useful, and fair quality. Prisms refract the light into a room environment, these diffract that light coming in, so that they need to be near (your eye or a camera lens) to see the diffraction effect. Recommend using for camera filter effect vs. not held to your eyes, because the spectral output is different pure frequencies that could damage your eyes (probably not, by why chance it?).Fun and great quality for a slide style, but there is some dust as another reviewer mentioned. Dust is Not hard to removed with a camera lens brush.

I compared the 1000 lines with 500 lines, and have to say that the 1000 lines is definitely able to show more details in spectra. These are great for introductory spectroscopy discussions in Astronomy classes; what I use them for. What a student can expect to see after some explanation of what to look for, is a series of spectral rainbows with absorption or emission lines. The lines do change positions based upon elements and energy levels. Yes, that sounds very elementary. But, for a student with no experience, this can be eye-opening and exciting. I found these gratings to be a great introduction to spectroscopy; and, a good lead into using higher-end spectroscopes.

I used in a HS physics lab with a red and green laser to determine wavelength. Lab was easy to do and we got good results with these slides.

I've used these for a variety of things, they are fun to play with and surprisingly accurate when messing around measuring the wavelength of lasers and stuff, you can easily make a rudimentary spectrophotometer or monochromator with one. Can't beat the value

Inexpensive and they do produce a clear spectrum. The plastic film grating is not flat, and I suspect it is sensitive to temperature. 1000 lines/mm is an extreme line density. That said, Aqua3D-Lab makes a $99 spectrometer based on this grating and a HD webcam. I have one and the performance is quite remarkable for the price, going from UV down well into the IR range. I do worry that calibration will shift as the curvature of the grating changes with temperature. But as an educational tool, dang, diffraction gratings for around a dollar apiece? That's quite a deal!

I teach science and this is a great way to introduce diffraction and the double-slit and multi-slit experiments. If you also get flashlights that can project both laser and white light, you can show the multi-slit effect with the laser as well as a beautiful rainbow that will attract the attention of younger learners. If you get different color lasers, you can demonstrate that the diffraction angle depends on wavelength, which will in turn explain the rainbow. Provides great teaching material.

Perfectly serviceable diffraction gratings. There is a little bit of ripple in the surface, so the spectra from them are not perfectly crisp, but they do what they are supposed to do (I'm using them for home-built spectrometers).

I use these when I teach students about light and the color spectrum. They work by holding them up to your eye and peering at a light source. The color spectrum appears as two vertical lines, one extending to the left and one extending to the right. The larger the light source the thicker the lines are. I like to have students look at different colored light bulbs and see what colors are present compared to white light. They are made of thick cardboard, so they should last a while.