blackbody   24

What is fire? - by Minute Physics
Minute Physics simply describes what fire is and why it acts like it does. In the process gives a nice & simple description of blackbody radiation.
FitchTeachers  science  physics  blackbody  radiation  quantum  light 
june 2017 by benwildeboer
The Awesome Physics in a Simple Sparkler | Science Blogs | WIRED
RT “: Blackbodies, spectral lines and heat transfer, oh my! The awesome physics in a simple sparkler
blackbody  spectroscopy  from twitter
july 2014 by darthsunshine
Fingerprint of stars
PhD comics describes the story of stars including spectroscopy, blackbody ideas and stellar evolution.
blackbody  video  spectroscopy  star_evolution  from twitter
june 2014 by darthsunshine
Black Sun Planetary Solutions
Interesting collector design, based on on a blackbody cavity concept. Reduces costs since it doesn't use a vacuum tube receiver core, along with a low precision tolerant mirror reflector geometry. Seems to still require single axis tracking though, but 10 degrees is a lot easier to implement via ratchet mechanisms rather than continuous jackscrews.
CSP  concentrating  solar  thermal  power  generator  blackbody  cavity  parabolic  reflector  collector  design  green  energy  funnel  CPV  Delicious 
december 2013 by asteroza
Well the first video from Operation Catsuit is... - Ayana Evans
Ayana Evans, an artist, visits MoMA and her friends video responses to her body (largely white jerks taking photos of her butt, though many other races respond similarly.)
blackbody  misogyny  objectification  intersectionality  race  sexism  racism  streetharassment  privacy  photography  publicspace 
september 2013 by Felicity
The Color of Space – Starts With A Bang
“We especially need imagination in science. It is not all mathematics, nor all logic, but is somewhat beauty and poetry. via Pocket
multiwavelength  blackbody  spectroscopy 
august 2013 by darthsunshine
The physical limits of communication or Why any sufficiently advanced technology is indistinguishable from noise
It has been well known since the pioneering work of Claude Shannon in the 1940s that a message
transmitted with optimal efficiency over a channel of limited bandwidth is indistinguishable from
random noise to a receiver who is unfamiliar with the language in which the message is written. We
derive some similar results about electromagnetic transmissions. In particular, we show that if
electromagnetic radiation is used as a transmission medium, the most information-efficient format
for a given message is indistinguishable from blackbody radiation. The characteristic temperature of
the radiation is set by the amount of energy used to make the transmission. If information is not
encoded in the direction of the radiation, but only in its timing, energy, and polarization, then the
most efficient format has the form of a one-dimensional blackbody spectrum.
compression  noise  blackbody  radiation  pdf  article  information 
july 2010 by davidar

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