How to create photons you can see
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Күн бұрынScintillating detectors at CERN rely on luminescence, sometimes known as "cold light", to detect high-energy particles. In the first video of the online course of the #CERNSolvayEducation Programme, we discuss how light is created, how incandescence ("warm light") differs from luminescence ("cold light") and how we use the latter in scintillation detectors. Find the interactive version of this video over on our website: cern.ch/photons.
As part of the education portfolio of #CERNScienceGateway, the #CERNSolvayEducation programme was launched by CERN jointly with @SolvayGroup for the #STEMeducation of high-schoolers. It is designed for teenagers who want to go beyond high-school physics and get an introduction to CERN #physics and #technology. In each video, you can test your understanding by answering quiz questions. If you are at least 16 years old, you can enrol for free in the online CERN-Solvay Education Programme towards obtaining a digital certificate, which will allow you to apply for a CERN-Solvay residential student camp.
Enrol for free in the online course of the CERN-Solvay Education Programme: cern.ch/solvay-course
Find all the videos of the CERN-Solvay Education Programme: • CERN-Solvay Education ...
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Chapters
0:00-1:18 Introduction
1:18-5:39 Incandescence
5:59-12:27 Luminescence
12:27-16:40 Fluorescence & phosphorescence
16:40-18:03 Scintillators
18:03-19:15 Conclusion
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External works referenced in this video:
Visible Spectra of the Elements - umop.net/spectra/
Taboada, Carlos, et al. "Naturally occurring fluorescence in frogs." PNAS 114.14 (2017): 3672-3677 - www.pnas.org/doi/full/10.1073...
Anich, Paula Spaeth, et al. "Biofluorescence in the platypus (Ornithorhynchus anatinus)." Mammalia 85.2 (2021): 179-181 - www.degruyter.com/document/do...
Black body spectrum in log-log scale - commons.wikimedia.org/wiki/Fi...
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Research articles and presentations to go further:
University-level introduction to luminescence (in French): Valeur, Bernard. "Lumière et luminescence." 2e édition, Bibliothèque Scientifique, Belin, 2017. www.belin-editeur.com/lumiere...
Valeur, Bernard, and Mario N. Berberan-Santos. "A brief history of fluorescence and phosphorescence before the emergence of quantum theory." Journal of Chemical Education 88.6 (2011): 731-738. pubs.acs.org/doi/10.1021/ed10...
d’Ambrosio, Carmelo. "A short overview on scintillators." CERN, 13 April 2005. ph-dep-dt2.web.cern.ch/CAT200...
The Crystal Clear Collaboration conducts research on scintillators and detectors for the LHC and future accelerators crystalclearcollaboration.web... home.cern/news/news/experimen...
@shoot-n-scoot3539 3 ай бұрын
That was great. Looking forward to more videos from CERN.
@pavangaonkardonigadde Жыл бұрын
Amazing! I need more like this
@h7opolo Жыл бұрын
9:43 the accompanying sound effect is synaesthetically appropriate which is conducive to learning.
@diogosoaresmendes Жыл бұрын
Great format CERN, keep it up.
@Darkanight Жыл бұрын
Very didatic and interesting
@Muonium1 Жыл бұрын
In fact, there is nothing particularly special about incandescence which sets it apart from other forms of luminescence if we think about it a little deeper. In incandescence, the electrons are still individually only emitting discrete photons of energy at specific single wavelengths, or colors, and they're still restricted to "jumping" in specific quantum transitions of energy. It's just that there is such an enormous multitude of individual energy levels available to an electron in a solid material like iron in a forge, or molten rock in flowing lava, or collagen molecules in your skin, that taken together they appear to continuously fill the entire spectrum. Incandescence is simply the word humans use when an object is hot enough such that the "blackbody" radiation it emits is short enough in wavelength to be detected by the unaided eye. This temperature is called the Draper point, and for humans, it occurs at ~525 °C.
@justinengbrecht1837 Жыл бұрын
This was so crucial to my understanding of the link between light and electrons, many thanks!
@anywallsocket Жыл бұрын
Very concise! Thank you :)
@DJElixir Жыл бұрын
Hi CERN! I love your work
@maliknaveed9556 Жыл бұрын
I can see photons since my childhood with naked eyes.
@maliknaveed9556 Жыл бұрын
It was my hobby to set in sunlight and enjoy photons shower and try to focus on one and observe it's movement. This phenomenon is more visible in early hours of sun rise, although you can observe it any time in daylight.
@lambda4931 2 ай бұрын
One million points to you. Thanks
@krishnabhutada3983 Жыл бұрын
Fantastically explained...
@h7opolo Жыл бұрын
8:34 technically, the electron frequency, since it both a particle and a wave, increases or decreases in response to incident photons.
@jishanttalwar7538 Жыл бұрын
Great explanation and I loved the animations. It made the content easy to understand. Thanks for the video. Looking forward to more such content. And to be honest, it is my dream to work at CERN. So, hoping to get there some day.
@schmetterling4477 9 ай бұрын
Well, if you were to say the same things in a physics exam, then they will never let you work at CERN. They will simply fail you. :-)
@hgracern Жыл бұрын
Surely colour is created by the cortex? Not by “sources” outside….idk.
@jannatnoor963 Жыл бұрын
the video was very informative. thank u
@schmetterling4477 9 ай бұрын
Also completely wrong in many aspects. If this was written by a physicist, then he needs to give his degree back. ;-)
@technofeeliak Жыл бұрын
How can I use this in quantum computing?
@octavian_2 Жыл бұрын
Great video! How can I find other videos in this education series? Hashtags are of no help and on CERN website there's nothing on this. If I'm not aware of something, then please leave me a comment.
@jishanttalwar7538 Жыл бұрын
Hi, In the description you can find the link for the playlist. It has 3 videos only.
@petramomotoso4361 Жыл бұрын
Everybody has the gift to see photons.
@PotionsMaster666 Жыл бұрын
Blind people be like 👁️👄👁️
@smashtubedudes Жыл бұрын
How to create something you can see... Our eyes always see this stuff. Cool.. It's science.
@JiffyDealer 3 ай бұрын
Real question, how can we actually define the size of photon?
@HVM_fi Жыл бұрын
There some audio editing mistake(s) ~5 min mark, levels are off.
@everythingisalllies2141 Жыл бұрын
How to detect non existing pretend particles called Photons. Ok, I got it.
@jussitapiorissanen Жыл бұрын
Q: How to create photons you can see? A: Turn on the light. Or heat a metal. Simple. 19:15 mins saved.
@MattMajcan Жыл бұрын
turn on a lightbulb
@matthewjandecka9362 Жыл бұрын
CERN? They'll never catch up to speed. Why? Because what they do is smash and crash. Not pass along and through.
@burrito-town 5 ай бұрын
Whoever at CERN was in charge of the audio in this video should be fired.
@arin.000 4 ай бұрын
chill
@KeithWickliffe79 Жыл бұрын
Yawn material.
@smashtubedudes Жыл бұрын
What a bunch of bullshit. Electrons don't like to be exited... so we can see them. It's really cool.
@supernova7799 Жыл бұрын
Booooo
Blueberry Lutein
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