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The two most recent pages are free. You can access other free pages from the sitemap. The blog is also free.
Nuclear AHL - free
1. The diagram below show the paths of two isotopes of Oxygen (16O and 18O) in a mass spectrometer. Show that if the radius of the 16O ions is 0.16m then the... more»
Atomic Models - free
1. Schrödingers model predicts that the energy of an atomic electron is equal to -k/n2 where k is a constant and n an integer. If the energy required to take an electron... more»
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1. Given that the resolving power of a microscope is proportional to the 1/wavelength of radiation used, show that if 600nm light is replaced with electrons accelerated through a Pd of 40,000V... more»
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1. A filament lamp gives out light of average wavelength 600nm when connected to a 220V supply. The current flowing through the filament is 5A (rms). If 3x1020 photons are emitted per... more»
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Towards the end of the first year of their diploma programme students start to choose their Extended Essay (EE) subject, this is an approximately 4000 word essay that is the result of... more»
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1. An electron is accelerated in the electric field shown. Calculate the velocity of the electron just before it hits the top plate (ignore gravity). Mass of electron = 9.1 x 10-31... more»
Previous: Gravitational fields, Component combinations, Resistance, Refraction, Induction, Transmission of power, Aspect 2 (free), Aspect 1 (free), Electrostatics..... more»
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Blog
Newtons blob
Posted on 4 February 2012
I was searching E bay for some interesting items when I cam across this Newtons rings apparatus from Philip Harris. It's exactly the same as the one that we had when I was at school, coming over all nostalgic I... more»
DIY
Posted on 1 February 2012
When things break I don't tend to have time to repair them and since we don't have a lab technician I simply put the broken stuff in a box and buy a new one. Today I felt inspired so decided... more»
Challenging the laws of nature
Posted on 1 February 2012 by Chris Hamper
I like my shoes to last at least one year. This has caused me some problems the past couple of months because bought a pair or rubber boots that had been in storage for some time and they started to... more»
Monthly Feature
It's always worth having a look at the "new sims" on the Phet site. They have been busy producing some for Chemistry and Biology but also a couple of new one for physics. With so many good applets and animations around it's worth making yourself a page of links. I started one some years ago and it's now part of this site. I have organised the links in under IB syllabus headings, here is the page for the core.
I find it so difficult to remember what the link is from the URL so have included a thumbnail screenshot to help. If I were making this page today I'd embed the links from Phet instead.
States of Matter
This one shows the way the molecules behave as heat is added. What I'd like it to show is that the temperature doesn't change as the material changes state. This doesn't seem to be the case though.
Resonance
In this one you can set the properties of the springs to get resonance. I think I'd need to play with this one a bit before using it in front of the class as it seems a bit fiddly.
Recent Comments
What happens if a student attempts more than one question required in Section B of paper 2?... more»
Albert Fong, 31 January 2012
The battery is an escalator and the internal resistance a stair case. Going around a cct is like walking round... more»
Chris Hamper, 6 December 2011
Will sort it... more»
Chris Hamper, 6 December 2011
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Chris Hamper teaches physics at the RCNUWC in Norway, is a workshop leader, examiner and moderator for the IBO, author of Higher Level Physics (Pearson) and has a passion for rock climbing.... more»
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“Science is the belief in the ignorance of experts.”
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Twitter: Chrishamper
Is this electric boogie? http://t.co/XpqqQdHC
January 16, 2012, 12:29 pm
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December 2, 2011, 9:26 am
Hi Albert; Then both are marked and the best score... more»
Chris Hamper, 31 January 2012