Universal cellphone spectrometer adapter

This was produced with the help of Daniel Van Dyke for Professor Orban at The Ohio State University in Marion.

Parts list.

DVD-R (split DVD in half and put purple lens on spect tube curved side point down)
Zinc-Plated Steel Washer for number 10 Screw size 0.219" ID 0.5" OD (McMaster-Carr)
Low-Strength Steel Square Nut Zinc-Plated 10-24 Thread Size (McMaster-Carr)
Steel Flanged Spade-Head Thumb Screws 10-24 Thread Size 1/2" Long (McMaster-Carr)

This universal smartphone adapter works with almost any phone.