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 is special to have a mug that has to do with my dad who invented a word when we were growing up. He passed away last year. Drinking from this mug is like spending time with him.
Quick turnaround time and good quality merchandise.
very cool kanye for me gave it to my crush and now were dating so yea
I bought a Prone mug and i love it its so good imma prone to the bathroom now brb
This mug gives my life purpose. It's what I've always said. Patience is a virtue and hard work never betrays. Ever since I was born I've been struck with one misfortune after another, but today it all paid off. I got my own mug, and I use it anywhere and whenever I can! Both of my legs are shattered because to my wife threw me in the middle of traffic and my windpipe is messed up due to me screaming all the way from the crash site to the hospital thanks to the unbearable pain I was feeling. Although even with all that's happened this is still the best day of my life. I suppose the only problem I have is that whenever I happen to look at my cup I get a little too happy. That causes problems because my life support can't handle my exhilaration, haha! I'm just kidding; that was just a little lighthearted joke of mine. I actually cannot afford life support because I spent all of my life savings on this fine piece of pottery. Not to worry though! I can get through the pain with my will and drugs - I mean medication. P.S. There are definitely no ghosts in the mugs. Just wanted to point that out in case someone was worried about that.
I bought two mugs as gifts for coworkers and they were very pleased. The print was clear and concise. Hopefully they last a long time.
Ordered a gift for a friend I hope he likes it :)
Mug was well-packed when received. Shipping was timely. The mug was as advertised. Very nice.
BEST THING EVER. CUZ YK WHAT!!?!? IT. IS. A. MUG. WITH MY NAME. AND. A COOL DESCRIPTION. ON. IT. I LOVE IT.
Just what I expected! Thank you!
I bought this friggin thing thinking my whole life would change. Guess what? It still sucks! If this friggin thing can't change my life then I don't want it!
This is a great gift to give after our Urban Dictionary inclusion
It's perfect!! Thank you!
My Name is Walter Hardwell White, My Mug was sent to 308 Negra Aroyal Lane, AQ, New Mexico and arrived on-time and I am very satisfied. My "Glock Dookie" mug is great for my lab work, and my friend Pinkman loves it!
I love this cup! My now ex-husband loves his opioids more than life itself. He would constantly pass out dead to the world the only thing I would here was his death moans. I had to call an aid car for him so many time that I can't remember plus 2 or 3 times the doctors told me that if it wasn't for me, he would have died. Her abandoned me after I was diagnosed with ovarian cancer because I was of no use to him any longer. I have no clue now who must be the one that's obligated to save his life any longer. All I know is I'm free from him now. The only thing I'm waiting for is that he finally overdoses himself & he's dead. I am buying a cup to send to him for our divorce anniversary gift so he can keep it in memory of how he treated me.
I loved it! Excellent quality!
I received the mug as a gift from a friend with whom I exchange "Weekaversary" eMails. I love the concept but am wondering why "aniversary" is spelled with only one "n?"
Wish it had the example text as well, but I loved it anyway
It’s great to be able to create your own mug.
My name is is Geet and literally this is literally a gem of a souvenir to have with me XD.
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