Will magnifying light make it more powerful?
114581
Besides the 2nd law of thermodynamics, what laws of optics prevent the temperature of the focal point of lens from being hotter than the light source?
133548
How can a speedbooster improve the light performance of a lens?
26074
Seeing strange things in light
48883
Heat production of magnifying glass
25088
Can a wizard use his familiar's senses to enlarge his "you can see" area?
75308
Does there exist a laser that is tunable over the whole visible spectrum?
81587
Power for POV display
24432
Create magnified call-out loupe effect on image
101668
Can I fine-tune my screen brightness?
4005
If refraction slows down light, isn't it possible to hold light still?
10579
Can something become "increasingly smaller"?
52326
Why does a ray passing through optical centre remain undeviated?
98091
Can an LC oscillator be used to generate visible light?
11021
Will the night sky eventually be bright?
6076
Rocket propelled by a giant monochromatic laser
5000
Do smaller apertures provide more depth of field past the diffraction limit, even if peak sharpness suffers?
35186
Would a prime be redundant with a fast zoom?