A list of puns related to "Ultravioletโvisible spectroscopy"
1a. If you choose this trade, you'll be stuck with this until 2031. You will be allowed to see normally for a total of โค 30 hours a year, including so far into 2022.
2b. you will be able to see the following:
i. a band from 100 to 300 nanometersโultravioletโUVA, UVB, and UVC. Your eyes will not interfere with your vision of such, through things such as absorption (e.g. your eyeballs won't glow as they generally do when exposed to UV radiation). Keep in mind that the only natural source of UV radiation is sunlight.
ii. Yellow is 565 to 590 nanometers in length. You will be able to see only a very narrow band from 557.4 to 557.6 nanometers, though with increased sensitivity.
e.g. If there were 2 glass bowls, one with small yellow pebbles at 557.4 to 557.6 and the other equal amounts of 565, 570, 575, 580, 585, and 590 (kinda orange-yellow to yellow to yellow-green pebbles), the first bowl will appear to you as yellow and the second as a very dark yellow, almost black.
iii. a band from 1500 to 5000 nanometers (1.5 ฮผm to 5 ฮผm)โinfrared. You will be capable of seeing thermal images, though probably only hot substances, such as rocket exhaust, molten metal, or fire.
5e. Your perception of color will change. Ultraviolet will appear as blue, regular light as green, and infrared as red. (e.g. depending on concentrations, if you see light and infrared, it will appear as green, green-yellow, yellow, orange, or red.)
What I mean is: why there are bands that cover a certain range in nanometers, instead of just the precise energy that is compatible with the related transition? I am aware that some transitions are affected by loss of degeneracy, like in complexes that are affected by Jahn-Teller distortion. But every absorption I see consist of bands of finite width. Why is that? The same question extends to infrared spectroscopy, with the transmittance bands.
Q18b) How do I find the percentage mass of phosphorus?
What I've currently got: 0.1M solution from 250ml. So n=cV=0.025 mol of Phosphorus. 0.025x31g=0.775g, which is already larger than 0.25g...
What did I do wrong? Help appreciated.
https://preview.redd.it/qmn9lrhmz4s41.png?width=317&format=png&auto=webp&s=53f566c9696f41a4511e7f5a8480b7f3f26e1c27
https://preview.redd.it/xinfuocoz4s41.png?width=341&format=png&auto=webp&s=7f0f99e0453cc8ca5d219ca9be34d28882797763
https://preview.redd.it/dp2urgxuz4s41.png?width=323&format=png&auto=webp&s=ea12ebc7298a5832eee2c5f7e191b4bef052ae84
From my understanding, the fermi level of a metal at room temperature indicates an energy level at which 50% of electrons exist above, and 50% exist below. Why then, is the fermi level in UPS spectra of metals observed as a distinct cutoff point? It seems like it should be continuous.
I stunpled upon a wave length figure explaining different radiation and had this thought which I couldnโt find an answer to on google. Maybe my googling skills are more inferior than I previously percieved.
What I mean is: why there are bands that cover a certain range in nanometers, instead of just the precise energy that is compatible with the related transition? I am aware that some transitions are affected by loss of degeneracy, like in complexes that are affected by Jahn-Teller distortion. But every absorption I see consist of bands of finite width. Why is that? The same question extends to infrared spectroscopy, with the transmittance bands.
I posted this question in AskScience too, but it's hard to get an answer there, with so many people posting, that's why I posted it here, too
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