Can you detect light that is never going to reach you?
128235
light point and photosensor
11130
Is it (theoretically) physically possible to project an image into thin air?
87463
Does spontaneous emission actually emit in a random direction, or is it measured in a random direction?
74101
How is a vacuum able to propagate light?
117197
Can there be black light? I mean is it possible to devise a machine that outputs darkness?
27616
Make Object emit light & be reconizable
39329
What options exist for making non-equipment objects invisible?
119580
Does light actually travel through glass?
10147
Why can't we see infrared light?
36482
How can laser interferometry be used to measure path difference smaller than wavelength of laser light?
58922
How do I capture artificial light sources better?
70343
What happens when Detect Magic is used upon something that is magically invisible?
37941
Can light travel slower than the maximum?
136003
Existence of monochromatic pulses?
13967
Can I try/catch a warning?
102041
Pinpoint the area light to object
127157
How to make a light emitting material sensitive to external light