Added: 1 year ago
From: ElectricVentures
Views: 7,790
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  • great effort,experiments tell much more than the theory...if the metal is positively charged and then is exposed to UV light,what will happen???

  • @glily2 Try it! Would the emissions of electrons discharge the tinsel if it was positively charged?

  • @glily2 The electrons that tried to get away would be brought straight back to the positive charge, nice video also

  • neat

  • Sorry for the double comment. My internet is quite slow.

  • @rockmn24 No problem!  "Live long and prosper!" :-)

  • I got a perfect score, my friend! I was graded 30/30, 30/30, 30/30, and 33/30, respectively. 

  • @rockmn24 Well done! Glad this video was of use. :-)

  • Can anyone please help me, Whats the difference between Threshold frequency for a metal, and work function energy?

  • @Robominable The THRESHOLD FREQUENCY of a given material is the lowest frequency of EM radiation which can eject an electron from the material.

    The WORK FUNCTION is the energy that binds an electron to the material. It is the minimum energy required by a photon to eject that electron.

    The two are related. The energy of a photon is hv, where h is is Planck's constant, and v is the frequency of the light. An electron will be ejected if hv is equal or greater than the work function energy.

  • @ElectricVentures Ahh yeah yeah. Thats great Thanks alot :) x

  • Great video, ElectricVentures. I'm going to do a science project on this, so thanks for the video!

  • @rockmn24 You are most welcome! Good luck with your science project.

  • @ElectricVentures Thank you, my friend! I got a perfect score! The judges graded me 30/30, 30/30, 30/30, 30/30, and 33/30., respectively.

  • very explained...... i need some assistance about other physics practicals. my email id is angel82650@yahoo.com.plz contact

  • @angel82650 Thanks for the comment! This is only a hobby for me, so I am not really available for answering questions via email. However, I do try to produce a few science video clips each year, so feel free to make suggestions for some things you would like to see. No promises, but you never know! --ElectricVentures

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