Helder Pinheiro
16 juni 2025
oanvändbart för migresultatet ser inte alls ut som bilderna
Cliente de
31 mei 2025
llego a tiempo y fue muy útil , para realizar el experimento ,
R. Seward
17 november 2024
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.
Pebbles
16 november 2024
you can use this to see the different spectrum of lights LED's, florescent, sodium and incandescent and you can really tell the difference between them
Joshua Wormley
10 november 2024
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.