Equations Book of Physics to Help You Solve EVERY Physics Problem: ✅ Contains many useful physics formulas. ✅ Understandable for everyone, because it contains no vectors and integrals. ✅ Formulas are colored and visualized. ✅ Perfect for high school and undergraduate physics students. Click on the following link to get the book: en.universaldenker.org/physics-equations-book 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: 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: en.universaldenker.org/avatars/fufaev Useful links: ----------------------------------- 🔗 Playlists: kzfaq.infoplaylists 🔗 Online formulary: en.universaldenker.org/formulas 🔗 Exercises with solutions: en.universaldenker.org/exercises 🔗 Free physics images: en.universaldenker.org/illustrations 🔗 Physics questions: en.universaldenker.org/questions #universaldenker You may reuse the videos for your own purposes. ❤

now it's extra clear, thank you!

the most underrated channel I've ever seen, I'm so glad I found it, brilliant work!

What a great video and nice way of explaining the Photovoltaic effect. It would be nice to see the same concept with Piezo and Pyroelectric effect.

Which one is anode and cathode in it???

With current understanding of wave properties of electrons, not simply solid particles, this probably could be explained with resonance phenomenon. Too bad everyone seems to simply accept and satisfied with it.

It might be better if red collar used for negative charges and blue for positive charges 😀😀 only an opinion

How is it that an electron is 2000 times smaller than a proton, and yet they have identical charges? How can that be?