Everyday Light
Dec 21, 2015
Fluorescent lightsElectrons flow through gas, ionizing the gas
Charged particles collide with gaseous mercury
Mercury becomes energetically excited
Energy is emitted as UV photons
UV photons excite phosphors on the inside of the tube
phosphors emit fluorescence in the visible range
Laser pointer
Neodymium:VanadatePotassium Titanium
oxide phosphate
Absorbs: around 800 nm
Fluoresces: @ 1064 nm
‘divides’ wavelength by 2