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comment Is it possible to start fire using moonlight?
@pela Yeah he said it today.
Jan
14
comment Do all phases of ice look the same visually?
Phosphorus comes in at least 4 different colors: black, white, red, magenta, due the the arrangement of the atoms...
Jan
9
awarded  Good Question
Jan
8
revised Do people wearing glasses have different field of view than those who don't?
added 80 characters in body
Jan
8
awarded  Notable Question
Jan
8
comment Do people wearing glasses have different field of view than those who don't?
@ChrisWhite I wanted to write "field of view" I don't know why I wrote line of sight...
Jan
8
revised Do people wearing glasses have different field of view than those who don't?
added 75 characters in body; edited title
Jan
8
awarded  Nice Question
Jan
7
awarded  Popular Question
Jan
7
comment Do people wearing glasses have different field of view than those who don't?
@CarlWitthoft Why do you think that? I thought larger field of view automatically means smaller apparent size (smaller image on the retina) of objects, like when you look through a peek hole. It's not about the perception of actual size. Or is crafting reasons to close questions is your favorite hobby?
Jan
7
reviewed Approve Do people wearing glasses have different field of view than those who don't?
Jan
7
asked Do people wearing glasses have different field of view than those who don't?
Jan
6
revised Does matter with negative mass exist?
added 3 characters in body
Jan
6
answered Does matter with negative mass exist?
Dec
22
awarded  Popular Question
Dec
22
awarded  Nice Question
Dec
21
accepted How do we know that the cosmic background radiation comes from the early universe?
Dec
21
comment How do we know that the cosmic background radiation comes from the early universe?
The question was why can't dust of 3K temperature explain this phenomenon. Would it have a different spectrum?
Dec
21
asked How do we know that the cosmic background radiation comes from the early universe?
Dec
19
comment Do all thermal radiators have the same surface brightness?
So a perfect reflector would never cool down?