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
The mug I ordered came in perfect shape In a box obviously designed for safe shipping. Quality is beautiful and is exactly as described. Thank you!
ABSOLUTE ART WORK!!!!! This is literally the best mug in the world. My entire family has one (wife, 2 daughters, and 3 sons). I would definitely recommend and place it as a mounoment.
Hilarious, I couldn't help but burst out loud in laughter.... !!!
It understands me. this mug has treated me better than any girl i've ever dated, and every bro i've chilled in the same bed with. we've been though thick and thin, but mostly thicc. i used to be depressed, but now this mug holds my existential fears so i dont need to carry them with me. i even wrote a song about my mug: mary had a little mug, e-i-e-i-o how i wonder what you are, floppy dongs near and far, cherri had a real thicc mug, e-i-e-i-despaci-to
Great mug, 100% recommend it for all family members! Best gift I’ve ever received!!!
It was so easy to order - and I could play with the syntax of the definition to get it just right. All of this was easy. And quite soon it arrived and is perfect.
Love it!! So true!!
I love 💕 mugs ☘️! These are so lovable. Thanks! I love the urban dictionary writers too.
The printing, the Word and it's definition -- were not quite what I expected. And the same word definition ordered on two different mugs, and yet each was described / defined differently.
Augustine would love the mis-spelling It should be Augustine's Laws. A great book - every engineer, programmer, project and programme manager should read. Based on experience of Defence and Space projects, and with lots of real data to support the tongue-in-cheek advice, it really has more value than all the System Engineering books I've never read. Can't wait to get a mug.
Sickm8 it was blooming gr8 for me GF. She bloody loved it. Onya!!!! ;)
aMUG US
very good product, i drink my coffee out of it every single morning. a tiny little itty bitty problem i have with it though, is that every time i drink anything except for coffee out of this mug it barrates me for having bad taste. makes me very sad, honestly. i didnt know cups could talk, but appearently i have been proven wrong. i would really appreciate it if you could start double checking if your cups are possesed by melicous spirts who like to insult you! except for that, great product!!
The workmanship of the product was excellent, and packaging for your delivery of this fragile item, a coffee mug, was appropriately safe. Nice job all around. Thank you.
It's the best mug in the history of mugs.
love it
excellent customer service. i gave the wrong address and they got it here quick.
This was easy to order although I wish the preview pics showed the next on both sides once you finish customizing. But I appreciated that if the text doesn't fit they email you and ask what you want it to say. Came out great and I can't wait to give it as a gift
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I love How I can order a cup with one of my favorite words
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