Magic moment
I was playing with GeoGebra to see if I could model single slit diffraction with a large number of wavelets in a narrow slit. Was a bit tricky and had to adjust the line thickness and opacity, then this...
Fat films
We're always talking about thin films but what about fat ones? At 5m thick, the film simulated in my latest GeoGebra adventure can hardly be called thin (actually it's variable thickness from 0 to 10m...
3D in GeoGebra
When I made my Spinning stopper simulation in GeoGebra I faked the 3D effect by making the path elliptical, If I had bothered to upgrade to version 5 I could have done it properly. Download the latest...
How much do you charge?
Add an exponentially changing PD across the capacitor to my last simulation and you see how the charge varies with time as the capacitor charges. I couldn't be bothered to add the circuit this time. Actually...
Quite big I suppose
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Full capacity
Here is another one of those concepts that is hard to explain but all makes sense when you see the numbers changing. Easy to set up the equations for this one but a bit fiddly making the charges and plates...
Bernoulli
Another GeoGebra creation for another new part of the syllabus this time fluid flow. Modeling the equation was easy as was moving the pipes around the barometers took some time though. I'll write an instruction...
The sound of silence
After my success with the space - time diagram I thought I'd take on an easier challenge of a charge in a B field. Here the charge enters the field at an angle causing it to move in a helical path. Quite...
Space - time
Ever since I started playing with GeoGebra I've been wondering about making a space - time diagram. This is one of the more tricky bits in the new relativity option so would be great if students could...
Got a problem?
My last blog post was about a problem concerning a small ball rolling off a big one, rather contrived but interesting. After constructing a spreadsheet to model the motion I thought that maybe this would...