File:Photoelectric Effect. And the Einstein's Formula..webm
Original file (WebM audio/video file, VP9/Opus, length 8 min 20 s, 3,840 × 2,160 pixels, 288 kbps overall, file size: 17.19 MB)
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English: Photoelectric effect and everything you need to know about it.
▶️ Playlist: https://youtube.com/playlist?list=PLTjLwQcqQzNLMZ-I4YRwIQK0FbCkztJbZ ❤️ Unlock all videos: https://youtube.com/universaldenker-physics/join 📚 Read lesson: https://en.universaldenker.org/lessons/289 Here you will learn in detail what the photoelectric effect is all about. First, we'll look at how the experiment is set up, then we'll move on to photons and photon energy. Then we will send a photon towards a metal plate to release an electron from it. Here you will learn about work function and cutoff frequency and how to calculate them. Using two examples of work function, we will convert electron volts to joules and vice versa. The ejected electron has kinetic energy. We take this into account when deriving the Einstein formula with the help of the conservation of energy. Afterwards, we use the stopping voltage to rewrite the Einstein formula. At the end, we illustrate the statement of the photoelectric effect with a graph. From this graph you can determine the value of Planck's constant. Video content: 00:00 What is the photoelectric effect? 00:07 Experiment setup 00:46 Photons 01:58 Work function and threshold frequency 03:48 Convert electron volts to joules and vice versa 04:19 Kinetic energy of an electron 04:50 Einstein formula 05:36 Stopping (braking) voltage 07:20 Energy frequency graph Difficulty of the video: 🧠🧠⚪⚪⚪ Join physics community: Discuss about physics, ask physics questions or leave feedback. 🔗 Discord: https://discord.com/invite/3Btr63fujg About the channel: Here you will find high quality free physics videos for beginners and advanced students. About the author: I am Alexander Fufaev, I am a physicist from Germany. I run the physics website universaldenker.org 🔗 More about me: https://en.universaldenker.org/avatars/fufaev Useful links: 🔗 Playlists: https://youtube.com/c/universaldenker-physics/playlists 🔗 Online formulary: https://en.universaldenker.org/formulas 🔗 Exercises with solutions: https://en.universaldenker.org/exercises 🔗 Free physics images: https://en.universaldenker.org/illustrations 🔗 Physics questions: https://en.universaldenker.org/questions
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| Date | |
| Source | YouTube: Photoelectric Effect. And the Einstein's Formula. – View/save archived versions on archive.org and archive.today |
| Author | Universaldenker ⚛ Physics |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:47, 14 June 2023 | 8 min 20 s, 3,840 × 2,160 (17.19 MB) | HareGovorittKrishna (talk | contribs) | Imported media from https://www.youtube.com/watch?v=pTmJh-UMDGs |
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