wigton physics
Thursday, 30 June 2016
Why do aerials have direction?
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The pictures come from the museum at Croome. I remember studying this for my degree but I've lost the detail now. So I was wonderin...
Wednesday, 29 June 2016
The Flame Probe
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I suspended a foil covered football from the ceiling and charged it up to +1000V. I used a flame probe to measure the electrical potent...
Tuesday, 28 June 2016
Keeping the milk fresh part 2
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Last week I used ice to keep milk fresh but that was not an option when we spent 3 days away from electricity. This time we used a bucket ...
Monday, 27 June 2016
Estimating the walkie talkie frequency
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On camp for the D of E Silver, we sat debating the frequency of the walkie-talkies. I estimated the aerial at perhaps 20cm. Aerials like t...
Thursday, 23 June 2016
Solar phone charger discharged my phone!
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I borrowed a solar phone charger. I set it up in bright sunshine and all was going well. After sunset last night it was still connected fo...
Wednesday, 22 June 2016
More electric field patterns
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The theory says that field lines leave and join surfaces at 90 degrees. I went on to have a point with a plane electrode, as shown i...
Tuesday, 21 June 2016
Electric field lines with semolina and cooking oil
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I put cooking oil into a Petri dish and sprinkled on some semolina. I used some electrodes made from bent coat hanger and connected it up...
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