everyday light
DESCRIPTION
Everyday Light. Optical emission. fluorescence. phosphorescence. Light bulb. Light bulb. Ne +. Ne. Neon light. Neon light. Neon light. Fluorescent lights. Fluorescent lights. Electrons flow through gas, ionizing the gas. Charged particles collide with gaseous mercury. - PowerPoint PPT PresentationTRANSCRIPT
Everyday Light
Optical emission
fluorescence phosphorescence
Light bulb
Light bulb
Neon light
Ne
Ne+
Neon light
Neon light
Fluorescent lights
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
Fluorescent light
Bedroom stars
Strontium Aluminate
Zinc Sulfide
Remote control
Remote control
LED: 980 nm
Motion sensor
Motion sensor
Laser pointer
Laser pointer
Laser pointer
Laser pointer
Laser pointer
Neodymium:VanadatePotassium Titanium
oxide phosphate
Absorbs: around 800 nm
Fluoresces: @ 1064 nm
‘divides’ wavelength by 2
Laser pointer