Rainbow Symphony Pack of 10 Diffraction Grating Slides - Linear 500 Lines/mm

So great for educational use or just for fun.Delivered very fast.

For a course on optics I ordered a Pack of 10 Diffraction Grating Slides - Linear 500 Lines/mm. The slides were packed and delivered well and work well.

If you are after fun with solar spectrum then this is for you it is on a 35 mm slide and that helps

excellent value

As described, quick delivery

Excellent for a physics class - or to interest grandchildren. The vaying spectra of the new LED lights show up well when viewed through one of the gratings.

asked for a return on the item. Seller never responded.

The gratings and their frames were all well made, and there were no defective ones in my set.The packaging was adequate, and none were damaged in shipping.They are suitable for making the "Home made spectroscopes" that have instructions all over online.