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Progress is impossible without change; and those who cannot change their minds cannot change anything. ..."George Bernard Shaw(1865-1950, Irish dramatist, essayist and critic, Nobel Prize for Literature 1925)"

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 Author Topic: Photoelectric Effect Java Applet modeling e*Vs = h*f - W  (Read 8801 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
lookang
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 « Embed this message on: July 14, 2009, 10:31:31 am » posted from:SINGAPORE,SINGAPORE,SINGAPORE

reference
http://www.walter-fendt.de/ph14e/photoeffect.htm

To model this equation.

Ekin = h f – W

Ekin ... maximal kinetic energy of an emitted electron
h ..... Planck constant (6.626 x 10-34 Js)
f ..... frequency
W ..... work function.

I am exploring whether this is a good applet to port over to Ejs format. I used to use this in 2006 and it worked fine, strangely now it is not plotting the lines.

i used to be able to vary the 5 options of light wavelength and it will plot the points automatically and when all points are plotted, it will draw a line to show

e*Vs = h*f - W

it used to show the line but strangely it doesn't run properly now.

i don't think i can make this one myself, so i have to request for this

By the way,
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=342.0
is a I vs V graph, i wonder can it be remix for e*Vs =  h*f - W ?
 httpwwwwalter-fendt.deph14ephotoeffecthtm.PNG (30.12 KB, 731x411 - viewed 1185 times.) « Last Edit: July 14, 2009, 10:44:22 am by lookang » Logged
Fu-Kwun Hwang
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 « Embed this message Reply #1 on: July 14, 2009, 10:56:43 am » posted from:Taipei,T\'ai-pei,Taiwan

Please check out Photoelectric effect
It is designed to be similar to a real experiment.
User need to repeat the operation several time with different work function and extract data from the simulation
to get e*Vs = h*f - W relation.
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lookang
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 « Embed this message Reply #2 on: July 14, 2009, 11:13:31 am » posted from:SINGAPORE,SINGAPORE,SINGAPORE

ok i try to remix this one into e*Vs = h*f - W
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Progress is impossible without change; and those who cannot change their minds cannot change anything. ..."George Bernard Shaw(1865-1950, Irish dramatist, essayist and critic, Nobel Prize for Literature 1925)"
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