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Photoelectric Effect-Tennis Ball

January 20, 2020


  • Reply gigijbijbj December 28, 2013 at 10:49 pm

    fantastic explanation, thank so much. 

  • Reply gigijbijbj December 28, 2013 at 10:49 pm

    thank you so much

  • Reply MrPickycat May 11, 2015 at 7:40 pm

    mustash madness teaches me everything I've ever needed to know
     I love this guy

  • Reply BRAVOZULU DWEST boathouse August 8, 2015 at 7:21 am

    if i shined blue light onto a metal  continuously   would the metal   "run out" of electrons after a time

  • Reply Erik Neave October 1, 2015 at 12:40 pm

    mistake at 5:31–5:45. that is what happens. more electrons do come off, just with the same kinetic energy.

  • Reply jwilson1812 December 6, 2015 at 5:20 pm

    @3:43 press it again and again

  • Reply chris s February 7, 2016 at 7:25 am

    Your demo with the tennis ball made me understand this concept thank you

  • Reply dipsiecamila March 27, 2016 at 9:59 pm

    What happened with the phi energy – threshold energy– ? Ekin = hv – phi, this means the energy of the electron is equal to the energy of the light minus the binding energy of the threshold. If there is a conservation energy, where that energy is? It happened the same with a rocket in the earth?After the rocked leave the earth, did it spend energy to get the threshold orbit? I mean the rocket energy of the rocket after leaving = possible total energy of the gas minus the energy to reach the stratosphere? I do not know. Can you please give me a clue?
    Other question: How you are sure that are more electrons with the same energy and no more energy per electron? How you know, or how can I see this? Is it a way to discover this? How you concluded this?
    Thanks in advance.

  • Reply Aman Adhav September 22, 2016 at 8:59 pm

    can I have my tennis ball back

  • Reply Sil Mov October 28, 2016 at 2:15 pm

    excellent explanation

  • Reply yash bhinwal April 27, 2017 at 12:54 pm

    u r best

  • Reply Ahmet Dilmaç March 22, 2019 at 7:25 pm

    I can tell this is the best explanation of photoelectric effect

  • Reply annu singh April 28, 2019 at 12:41 pm

    It is very useful for a good concept….thank you

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