How to create photons you can see

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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.

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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:

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Research articles and presentations to go further:

CERN

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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.

Muonium

I can see photons since my childhood with naked eyes.

maliknaveed

This was so crucial to my understanding of the link between light and electrons, many thanks!

justinengbrecht

9:43 the accompanying sound effect is synaesthetically appropriate which is conducive to learning.

hopolo

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.

JishantTalwar

That was great. Looking forward to more videos from CERN.

shoot-n-scoot

8:34 technically, the electron frequency, since it both a particle and a wave, increases or decreases in response to incident photons.

hopolo

Everybody has the gift to see photons.

petramomotoso

Surely colour is created by the cortex? Not by “sources” outside….idk.

hgracern

You missed a few points, cold objects emit a color, why is that, meaning in addition to infrared they emit their own color.

Also when incandescent why are all wavelengths emitted? Why is the spectra continuous? Should it not be unique to the element?

climbeverest

Is possible calculate amount of universe light, or at least in a room?

juanrodriguezsalazar

the video was very informative. thank u

jannatnoor

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.

octavian_