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
I love the item I ordered but found the website a little difficult to navigate.
Now this has been my favourite mug by far. I put the word of scrunkly on it just as i had envisioned. Now to know why i picked a scrunkly mug, we need to go back all the way to the year of 2016. It was a day like no other, the birds were tweeting. We were all laughing while playing in the playground. Then came that fateful moment. A cackle was heard screeching throughout the lands. I turned my head in complete and utter fear. Two seagulls stood there. One was cackling while a red liquid dropped from its mouth. The head of the seagull next to it was missing. The seagull had consumed its friend's head! A betrayal, no... a parley even! To this day I still hear the words which left that evil beast's beak. It said, "Awww, the scrunkly". It then flew off into the sunset, leaving nothing but chaos and carnage behind. Anyways 10/10 for the mug. Would buy again.
Came in like ordered, solid mug
The mug arrived as shown and expected. But, it is an average mug and the cost is quite high. It's funny and good as a one time gift. If we needed several, the cost would be prohibited. Again, funny product and as expected.
Love it. I can't wait to give it as a gift yo
This is lafayetti yummi yum yum Oui oui mon ami je m'appelle lafayette The lancelot of the revolutionary set I came from afar just to say "Bonsoir" Tell the king "Casse toi" Who's the best C'est moi
Awesome purchase, I can't wait to show off my "Progressively Straight" mug at Starbucks.
Mug was delivered undamaged just as ordered.
My order came quickly. Packaged well. Great job.
IT WAS MUG! CAME QUICK & SAID THING. HAVE NOT TASTED YET. NOT SMELL BAD, BUT DISHWASHER NONETHE LESS....
Henceforth, I am unable to leave a negative review for this amazing cup.
Good quality, just as pictured. Very pleased with it!
Having my first cup of coffee in the new cup. Good idea to add new terms through individual contributions.
10/10 Looks exactly like the preview. Shipping was fast.
This is for my granddaughter whom I used to call cutie patootie until she found out another meaning for patootie. Then she didn’t like the name so much! This will be a perfect gift for her! She is 16.
Love the cups :) It reminds us of our sweet momma. I thought everyone knew the word "mommicked" but evidently it is an Eastern North Carolina thing...My sisters and I all married Northerner/ Yankees and they had never heard of the word. Thank you for a tender memory.
Cup came in one piece and looks as nice as it does in the picture! Only note is just be mindful of any typos in the description of the definition, they will show up on the cup too! Other than that, no complaints!
This reminds me of the amazing teams i worked in!
great experience, with fast delivery. Thank you!
my grandma loved it!
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