Photoelectric effect animation

picture-1

I found an useful simulation of the photoelectric effect here.  You can change the metal under investigation (we used Zinc in class).  You can also vary the wavelength and irradiance of the light.   Notice that below the theshold frequency you can’t get  any photoelectrons, even if you set the light to its brightest setting.

photoelectric effect

We looked at the photoelectric effect this week.  I’ve been looking for some video demonstrations but there are very few explanations that I would be happy to recommend.  The animation I used in class is available here.  I also found a nice demonstration on youtube (see below) that uses a different type of electroscope to indicate the presence of charge.

This video is also attached as a podcast.

Higher summary notes

Someone sent me a link to a great set of summary notes for the entire Higher Physics course.  They are from Hermitage Academy in Helensburgh and I’d like to thank them Physics dept there for making them available.  Use the download link or save it by getting the podcast episode in iTunes.

Free physics software

I’ve had an email from Yenka to say that they are now offering many of their products for home use – free of charge!  I think Yenka is the new name for Crocodile Clips, the company who made Crocodile Physics and Crocodile Technology.  Their software allows you to create your own experiments to learn about

  • motion – SG transport, Int2 unit1, Higher unit1, AH unit1
  • electricity – SG using electricity, Int2 unit1, Higher unit2, AH unit2
  • light and sound – SG health physics, Int2 unit3, Higher unit3, AH unit3
  • electronics – Int1 applied practical electronics, SG electronics, Int2 unit2, Higher unit2

They also have some chemistry products you might find helpful.

The software is free but you can only use it at home.  Why not download it and see if you find it useful.