This video presents the physics behind the impossibility of concentrating light beyond a certain point. More information can be found at:
what-if.xkcd.c...
en.wikipedia.o...
www.askamathem...
physics.stacke...
physics.stacke...
Note that many comments in the last three links have errors, which are discussed in the video.
The Cooke paper is
Dave Cooke" Sun-pumped lasers: revisiting an old problem with nonimaging optics", 20 December 1992 / Vol. 31, No. 36 / APPLIED OPTICS 7541-7546
Part 2 and 3 of this series:
• Can you burn paper wit...
• Can you burn paper wit...
Негізгі бет Can you burn paper with moonlight? Part 1.
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