Knocking Electrons With Light—The Photoelectric Effect

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I show you the photoelectric effect with two different methods

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the electrons must be traumatized after bumping into all of those photons

googelman

That´s exactly how a laser printer works:
A drum is negatively charged, then a laser (or a LED bar) kicks out electrons off this drum corresponding to the printing pattern, toner is beeing released and attracted by the charge, forming a physical image on the drum, then the toner is rolled out onto the positively charged paper and finally cooked in with heat by another drum. The hairy wires at the printer´s ass discharge the paper to ground, so it won´t get sticky. That easy :)

paulkocyla

Being a JEE Aspirant, I learnt this recently but never knew how exactly it worked.

sagittario

Its impossible to say anything bad about this guy. Hes just so smart and wholesome

jdenseje

I like how you don't spoon feed us with animations. You actually give us a demonstration. Thank you for putting so much of effort into what you do ❤️

brandonpillay

This guy teaches more physics than schools

HamzaKhan-nkhx

What I like about this channel is that he is quite frugal when it comes to explaining complex things. The low production budget makes it more interesting.

doctorpanigrahi

PLEASE use appropriated rated sunglasses when using a UV-C bulb. Not only will those bulbs give your skin a sunburn, but also your eyes!

Benabik

Great practical explanation of the "quantum bounce"

Remember always wear eye and skin protection if your in the same room with a functional UV-C light source.

martinmespiespinosa

So the Sun can discharge things just by looking at it angrily, nice

calitts

I really like how he explains these super complex phenomenons in a way that simplifies it down to easy-to-understand terms. The practical way of showing it definitely helps as well.

Gemini-Lion

sir you are lil wrong at 6:16 this happened because intensity of light (amplitude) doesn't matter .It cant cause electron emission if its frequecy isnt greater than threshold frequency . the intensity just increases amount of electron emitted from the metal and not the electron emission itself . its frequecy that would initiate it ..

prashanthkumar

Note when he means extra protons, he means that electrons had left the surface.

westonding

I’ve been watching this guy for 5 years and I’d say he’s pretty damn good

EzeTv

The positive charges are electron "holes" instead of protons. The protons are always in the core and do not move.
So touching the plate with the positively charged rod actually drains the electrons from the plate to balance out the charges, leaving a net + charge on the plate.

XWurstbrotX