CrashCourse
CrashCourseWhat is light? That is something that has plagued scientists for centuries. It behaves like a wave… and a particle… what? Is it both? In this episode of Crash Course Physics, Shini introduces the idea of quantum mechanics and how it helps us understand light. Also, there’s this thing called the ULTRAVIOLET CATASTROPHE!
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48 Comments
@crashcourse
03/14/2025 - 6:36 PMWe made quiz questions to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: https://apple.co/3d4eyZo
Download it here for Android Devices: https://bit.ly/3TW06aP
@Maxerprodigy
03/14/2025 - 6:36 PMWho's here really to learn quantum physics 😅😅
❤
@sudhirraut375
03/14/2025 - 6:36 PMThanks
@shawnsea624
03/14/2025 - 6:36 PMThanks!
@dennishandfield4369
03/14/2025 - 6:36 PMLight wave effect…
@thatomofolo452
03/14/2025 - 6:36 PM❤❤❤💫
@imtiazahmedsiyam8251
03/14/2025 - 6:36 PMIs quantum physics really hard?
@davidmiller11723
03/14/2025 - 6:36 PMI'm sorry, the letter what…?
@h07kin.g
03/14/2025 - 6:36 PM😂😂😂😂😂😂😂😂😂😂😂😂
@GPTyunggun
03/14/2025 - 6:36 PMThis is so good, keep spreading real science
@jameslke1241
03/14/2025 - 6:36 PMI was searching for photoelectric effect and bumped into this. I'm impressed and grateful.
@syaoransakura8839
03/14/2025 - 6:36 PMI am double stupid
@Comenter0999
03/14/2025 - 6:36 PM2mintues in I’m lost
@OfficialJoeyC
03/14/2025 - 6:36 PMnot sure how i ended up here, but im enjoying this
@jadem8052
03/14/2025 - 6:36 PMI can never get tired of learning with crash course !!!
@Sebastianmaz615
03/14/2025 - 6:36 PMNever noticed her pronunciation of the letter "h" until it was brought up. 😆🤣
@meaww7373
03/14/2025 - 6:36 PM🤔
@VDcharlie
03/14/2025 - 6:36 PMReddit trying to teach me Quantum mechanics
@norel457
03/14/2025 - 6:36 PMWhy am I not understanding this clearly?
@Munna_Choudhury02
03/14/2025 - 6:36 PMHi
@aperson2020
03/14/2025 - 6:36 PMOn a serious note, i have a masters degree in Physics from 1982. I have studied QM. I will admit i didn't quite get it fully. But i think the truth is, after watching over 50 plus videos on YouTube, QM has not been taught well by these geniuses. They cannot simplify it for us common people.
@aperson2020
03/14/2025 - 6:36 PMI couldn't understand a word. She was speaking too slowly 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
@Al-cynic
03/14/2025 - 6:36 PMwhy is this aimed at 12 year olds?
@FaresMohamed-mi1vp
03/14/2025 - 6:36 PM3.51 error – "Hydrogen Attom"
@bigyeticane
03/14/2025 - 6:36 PMHigher dimensionality limits the framework of human understanding. I appreciate that scientists are intelligent enough to see this barrier/hurdle. There is only so much we will be able to solve without finding away to evolve how our consciousness processes information.
@ringo4543
03/14/2025 - 6:36 PMTrying to understand quantum mechanics makes me so angry like if I think about it for more than 1 minute I start getting irrationally angry at all quantum mechanics and wanting to actualy blow them up
@Igris_Gladius
03/14/2025 - 6:36 PMmy teacher told me to write down the points, do you guys have any?
@primovid
03/14/2025 - 6:36 PMWatch this video at 1/2 speed
@marccondarcure1698
03/14/2025 - 6:36 PMWhere's John 🙁
@eternalmaximum6899
03/14/2025 - 6:36 PMReally thing I don’t understand the reason for my life wasted I should not have been born as a Capricorn
@zidaneprendergast9815
03/14/2025 - 6:36 PMCan light source also travels in Ray
@Naughty-jq2gg
03/14/2025 - 6:36 PMThank you❤🌹🙏
@bubbalandbeau9872
03/14/2025 - 6:36 PMHuh?
@aminakonarbayeva4005
03/14/2025 - 6:36 PM3:55 Let's just say THANK YOU to Mileva Maric Einstein, Albert's wife, who did most of the calculations, worked on their common researchs and actually helped to come up with this theory. Credits to you, Miss Mileva Maric Einstein
@mrboombastic_69420
03/14/2025 - 6:36 PMDa fuk i just heard. It sounded real cool
@JOHNTECH112
03/14/2025 - 6:36 PMwoh ,woh ,woh reduce the speed , you are explaining , your not catching any bullet train
@Lucky10279
03/14/2025 - 6:36 PMThe idea of light sometimes behaving like a particle and sometimes like a wave is, at best, a misleading oversimplification. I can't really blame Crash Course in particular, as it's a very common explanation, but it's wrong. Light is always a wave and it's always a particle. The thing to realize is that it's never a classical particle. In quantum mechanics, the word "particle" has a very specific meaning — it's just shorthand for "localized wave function." Essentially, a quantum particle is just a tiny wave. A very tiny wave, which is why it often acts like what we think of classical particles. But it's never actually a classical particle. It's always a wave. What the photo-electric effect proved is that light was quantized — that means it's a particle in the quantum mechanics sense of the word, but honestly, sometimes it's just easier to forget about particles altogether, because the word has such a strong connotation of "tiny solid sphere", at least for me.
@benjy22
03/14/2025 - 6:36 PMGreat vid
@Imran_sgsM
03/14/2025 - 6:36 PMI love this mam
@universenerdd
03/14/2025 - 6:36 PMblack bodies exist, theyre called blackholes
@rifrene
03/14/2025 - 6:36 PMDid Shini just say haych?
@bliss_fullness3218
03/14/2025 - 6:36 PMher british accent uhhhh
@PraveenKumar-mb3kg
03/14/2025 - 6:36 PMI have a got a lot of crazy answers from your channel…. My kind request is you are running up, keep slow to make us understand the concepts.
@deboi525
03/14/2025 - 6:36 PMSo how much is the work function?
@mitchellbriggs2954
03/14/2025 - 6:36 PMWouldn't a black body be a black hole, the heat of which is produced being hawking radiation?
@mdsharafathossain3767
03/14/2025 - 6:36 PMFelt like she had a train to catch after this presentation…thereby she was in such a rush.
A question to her…. Could you finally catch the train???
@BB-qr7fz
03/14/2025 - 6:36 PM"All you have to do is create a few simple tests," she says….
@Redphionix
03/14/2025 - 6:36 PMSo he invented the Planck length