radiometer
A radiometer or roentgenometer is a device for measuring the radiant flux (power) of electromagnetic radiation. Generally, a radiometer is an infrared radiation detector or an ultraviolet detector.1 Microwave radiometers operate in the microwave wavelengths. While the term radiometer can refer to any device that measures electromagnetic radiation (e.g. light), the term is often used to refer specifically to a Crookes radiometer ("light-mill"), a device invented in 1873 in which a rotor (having vanes which are dark on one side, and light on the other) in a partial vacuum spins when exposed to light. A common belief (one originally held even by Crookes) is that the momentum of the absorbed light on the black faces makes the radiometer operate. If this were true, however, the radiometer would spin away from the non-black faces, since the photons bouncing off those faces impart more momentum than the photons absorbed on the black faces. Photons do exert radiation pressure on the faces, but those forces are dwarfed by other effects. The currently accepted explanation depends on having just the right degree of vacuum, and relates to the transfer of heat rather than the direct effect of photons. 23 A Nichols radiometer demonstrates photon pressure. It is much more sensitive than the Crookes radiometer and it operates in a complete vacuum, whereas operation of the Crookes radiometer requires an imperfect vacuum.
The Urban Dictionary Mug
it's great get it with the definition of your b and make it cuteee
Great as punctuation to an inside joke. Very expensive for a coffee cup.
Excellent communication. Prompt service. Quality product.
my friend loves funky monkey mug
Great idea to be able to offer this quality mug. I wish it would have come with the full text including examples listed on Urban Dictionary but I do love the mug. Just bought my 2nd one. Packaging is duarable and perfect for rough transit.
¡Soy profesora de español y lo voy a usar en mi clase en la universidad!
I wish the text on the back wasn’t so small—if I had to order it over again I would’ve inquired as to whether the words could be enlarged so it filled up more of the “white space” on the back
You guys are fantastic! Will continue to do business with you. Thank you so very much.
Now I have a UD mug! Good quality, nice printing, great definition!
Your company did an excellent job with our order. The beautiful mug with our son's word and definitions arrived in perfect shape, thanks to your outstanding box design! I have never seen a box so cleverly made. I cannot bring myself to recycle it;). The mug will be enjoyed for years to come. Many Thanks, Deborah Crosley Holland and Michael Holland
Got this mug for my daughter and she was taken a back. I explained to her why it was funny, but she didn't seem to understand. Its been a few days since my daughter has talked to me. I'm positive she loves it! I'm hoping to hear from her soon :)
Arrived before my daughter’s birthday, which was good. Not chipped or cracked, so that was good, too. Ichabod Crane looked good on the ferra color.
Looks great. Made a cool gift. Quick shipping!
It holds liquid, very good
I use it to catch my cum
the mug is really durable, my parents beat me with it and it doesnt break
Love this mug, I like to use it to defecate in which I then feed to my family. 5 stars.
Quick shipping and awesome hysterical product!
I fucked with it for months before i finally ate it.
Great mug! Got a homo mug for a friend's birthday and he adored it. :)
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