Light-activating a motor
105529
Detecting state of LED to control another circuit
143758
Shine a light into a superconductor
117653
How does light travel?
14926
Activate physics by keyframe
26074
Seeing strange things in light
40542
From where electrons flow to make a bulb light?
64508
Where exactly does energy quantisation come in for light?
77950
Turn Equipment On
58074
Physics of Focusing a Laser
81158
Light "diode" and 2nd law of thermodynamics
127157
How to make a light emitting material sensitive to external light
82952
How do I treat this "lamp" to find power dissipated?
152810
Distribution of time that a flashlight can operate
110997
How can I control a servo motor with the PWM output of a microcontroller?
115903
Simple light bulb operated by button and optoisolator triac
128577
Intensity of light
139947
Tired light red shift hypothesis