Ocean Optics Red Tide Guide - Manual (Page 11)

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LEDs
- compare red and infrared. The spectrometer can
see infrared but you can’t. How do white LEDs work?
What is the peak wavelength of a blue LED?
Diode and HeNe Lasers—how much more monochro-
matic are lasers? (Hint: shine the laser onto white card
and point the fiber optic probe to the laser dot on the
card).
Observe laser precautions.
Red LED vs Laser
Blue LED
TV remote IR LED at 933nm
Wavelength shift with angle for an interference filter
Absorbance peak of chlorophyll from beech leaves
Potassium K doublet from burning a banana chip in a
Bunsen flame