A Conversation for The Quite Interesting Society
QI - Depth Perception
Deadangel - Still not dead, just! Posted Nov 12, 2008
InfiniteImp,
Feel free to squabble away. It helps when I get things wrong. E.g. the human eye sensitivity.
You're also right that water is blue - it's blue because it absorbs (or filters if you prefer) the other light spectra, allowing blue light to penetrate further.
Re the red sunsets, there's also the lensing effect to take into account. The blue end of the spectrum has been refracted more, so will be missed in the higher levels of light earlier in the day.
QI - Depth Perception
Clive the flying ostrich: Amateur Polymath | Chief Heretic. Posted Dec 8, 2008
My explanation of the science that lay behind this QI was not accurate or clear, so I ran it past the brains at Science Explained (SEx) who gave it the once over - and you can read the deliberations here:
F2124165?thread=6061888
QI - Depth Perception
Clive the flying ostrich: Amateur Polymath | Chief Heretic. Posted Dec 8, 2008
Well I wanted to make sure when I re-read these forums in future that the information in them is accurate.
QI - Depth Perception
Runescribe Posted Dec 8, 2008
Red light is longer and less energetic than the other colours. I'm not arguing on how far they poernetrate because I'm pretty sure you're right on that one, but red is definitely the longest wavelength and lowest energy of the visible spectrum. Blue and violet are the most energetic, followed by ultraviolet which is invisible but gives you sunburn.
Key: Complain about this post
QI - Depth Perception
More Conversations for The Quite Interesting Society
Write an Entry
"The Hitchhiker's Guide to the Galaxy is a wholly remarkable book. It has been compiled and recompiled many times and under many different editorships. It contains contributions from countless numbers of travellers and researchers."