Recent questions tagged optical

Description : People who wear prescription glasses: do your glasses have anti-reflective coating and do you think it's worth the extra cost?

Last Answer : I would go for it and here is why: there may come a time when your contact lenses are lost, broken or stolen. it would be nice to know that you had your glasses as a backup and with the special coating ... have this problem, but at least it would be comforting to know its there ........just in case.

Description : When should I be wearing my glasses?

Last Answer : Wear them when you need to see more clearly…if thats all the time then wear them all the time. I’ve worn glasses since third grade and for a while, every year my eyes got a little bit worse but this last year they actually improved a bit. So who knows.

Description : How to Measure Optical Distortion

Last Answer : How to Measure Optical Distortion Optical Distortion is defined as a defect in an optical system. In this defect, the magnification of lines causes lines that are typically straight and sitting at an ... to measure optical illusions and also how the illusion is affecting the way you see a specimen.

Description : Draw neat labeled diagram of optical pyrometer.

Last Answer :  optical pyrometer

Description : Give two applications of each : 1) Eddy current sensor 2) Optical sensor.

Last Answer : Eddy current sensor : 1. Detection of non-magnetic but conductive materials. 2. Displacement sensing 3. Position sensing Optical sensor : 1. Position Detection 2. Velocity Detection 3. Acceleration Detection 4. Direction Detection