Inside a PM1A Color Analyzer
As I mentioned in one of my posts a few years back, a color analyzer from the 80’s can be a treasure trove for the hobbyists. And at the very least, it is a cheap way to get yourself a…
Tag: Photomultiplier
Direct Measurement of the Speed of Light using a Cheap Laser Diode – II
In my previous blog post, I discussed the basic TOF method for direct measurement of the speed of the light. In order to measure the time of flight accurately, we need to be able to both generate and detect very…
Reverse Engineering a Beseler PM2L Color Analyzer
I recently acquired an old Beseler PM2L color analyzer. This kind of color analyzer was designed to analyze the color or exposure of film negatives at a certain location by comparing the intensity of the filtered light of each color…