The discussion centers on sourcing a polarization filter rotator dial for measuring the angle of rotation of polarization filter sheets. Participants suggest alternatives, including a DIY approach using a linear polarizing filter and a plastic protractor, which can achieve angle measurement accuracy of up to 1 degree. The conversation highlights the high cost of professional polarizer mounts, often exceeding $150, and debates the value of investing in quality equipment versus budget-friendly options for educational purposes.
PREREQUISITESStudents, educators, DIY enthusiasts, and anyone interested in building or using optical equipment for experiments in physics and optics.
Dr Transport said:
You could always make your own mount with a cheap camera polarising filter (linear not circular option) and use a circular, school type, plastic protractor. If you are into DIY you can use plastic PVC plumbing tubing. There is a wide selection of fittings that would allow the tube to be mounted on a board or a laboratory clamp stand. That sort of arrangement would cost the sort of money you're talking about and could give very adequate results with angle measurement accuracy of down to 1 degree, depending on how firm your arrangement is.tryingtolearn1 said:
.sophiecentaur said:
You can do many elementary experiments in Physics without "quality" equipment. School physics exists on what can be snobbishly called rubbish. It can be a terrible waste of money to go for 'the best' if you don't plan to make a lifetime study of a topic.Dr Transport said: