could you do a follow up video explaining why the photoelectric effect supports the particle theory of light but not the wave theory as i am having some trouble getting my head around it!!
@TheLearnTube Great video, My only concern is that you say at 3:38 you say to make the light source brighter giving more electrons of the surface. Isn't it that when you increase the frequency of the light that the electrons gain more kinetic energy? By the formula of: E = hf-W as h and w are constants then f would be the only one able to change in order to give more electrons.
@mattphillips1993 Increasing the intensity increases the number of photons and therefore more electrons can be interacted with and emitted provided they overcome the work function. They will all have the same energy as the photon which liberated them as only increasing the frequency would increase their energy but more are able to be emitted by more photons. Brightness of light is to do with the intensity (number of photons) and the colour of the light is because of their wavelength/frequency.
thank you very much! agree with the others, a bit of a hitchup at the end which was a bit disappointing, but the analogy was great! overall thanks! :)
@naomiharding This was used to prove that light acts a particle and actually contradicts the double slit experiment, this just proves that light can act as a wave AND is tiny particles called photons. So.. pretty much..it's kick ass.
Very helpful, thank you for posting! :)
pishylu 2 months ago
I'm guessing people watching this are also doing the exam this afternoon?
EllyFrith 8 months ago 2
could you do a follow up video explaining why the photoelectric effect supports the particle theory of light but not the wave theory as i am having some trouble getting my head around it!!
bmahy1 8 months ago 4
@TheLearnTube Great video, My only concern is that you say at 3:38 you say to make the light source brighter giving more electrons of the surface. Isn't it that when you increase the frequency of the light that the electrons gain more kinetic energy? By the formula of: E = hf-W as h and w are constants then f would be the only one able to change in order to give more electrons.
mattphillips1993 8 months ago
@mattphillips1993 Increasing the intensity increases the number of photons and therefore more electrons can be interacted with and emitted provided they overcome the work function. They will all have the same energy as the photon which liberated them as only increasing the frequency would increase their energy but more are able to be emitted by more photons. Brightness of light is to do with the intensity (number of photons) and the colour of the light is because of their wavelength/frequency.
SketchupSchool 8 months ago
thank you very much! agree with the others, a bit of a hitchup at the end which was a bit disappointing, but the analogy was great! overall thanks! :)
UnEarthedMafia 8 months ago
gr8 video...i likde the analogy
tenseman08 9 months ago
i couldn't understand the last bit, which i think is the most important- -'
lifesabigfightbaby 9 months ago
nice analogy, definetly made it easy to stick
generalzeedot 10 months ago
like the analogies...(sp) Be better if in an animation form but i appreciate that this would take some time to create
strathallanguy 11 months ago
Your teaching method is just great! Thank you, this helped :)
112tonja 11 months ago
thanks, is this how they observe in the double slit experiment?
naomiharding 1 year ago
@naomiharding This was used to prove that light acts a particle and actually contradicts the double slit experiment, this just proves that light can act as a wave AND is tiny particles called photons. So.. pretty much..it's kick ass.
TheAllboutwin 11 months ago
thanks this helped with a project at school......... no reading for me hahaha
detectivedanwilson 1 year ago
good explaination
superwolfie22 1 year ago
Please add your Comments....Thanks :)
TheLearnTube 1 year ago 4