How much data can you shove through a fiber optic cable? Quite a lot, as it turns out
. Using the ITU standard 50 GHz dense wavelength division multiplexing
grid, not only can you easily do 80 x 10 Gbps channels in a single fiber pair, but recent advances in modulation technology mean that with QPSK, 4QAM or 16QAM modulation, 1/80th of a dark fiber pair can carry a 100 Gbps
signal in the optical space previously occupied by a single long distance 10 Gbps circuit.
posted by thewalrus
on Sep 9, 2013 -
Your daily dose of perception-bending.
Stare at the center of this video (wmv or flash) for a minute or two then look away from the screen at your surroundings. You'll experience an interesting and somewhat disconcerting effect. Not appropriate for anyone prone to headaches or seizures.
posted by brain_drain
on Aug 28, 2006 -
Masters of Deception
"There are a number
of incredible artistic works
featured in Masters of Deception, which require movement to appreciate their full impact. Additionally, I had in my possession various interviews with some of the book's featured artists that I wanted to share with my readership. Unfortunately, the publisher was unwilling to produce a CD to accompany the book
. I have created this web site, therefore, to augment and enhance the reader's experience by presenting those works and interviews that I could not present in book form." Al Seckel.
posted by hortense
on Aug 19, 2005 -
of vision science at MIT understands that life isn't just black and white, even though we often see it that way. This
amazing illusion proves it, and these
slick, fast-loading, Flash demonstrations of lightness perception show how it's done. (My favorite is the "Koffka Ring
".) White paper here
, for deeper background.
posted by taz
on Sep 27, 2002 -