Steve4Physics's latest activity
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SSteve4Physics replied to the thread Demonstrating a pinhole camera with a screen projector.Immediate (and probably not that helpful!) thoughts are... Have you attempted a trial-run to see if you can get it to work? If you look...
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SSteve4Physics reacted to collinsmark's post in the thread Cutting the Dose Rate in half with shielding with
Like.
But here, I_0 would be the intensity with no shielding at all, correct? But remember, she started out using some thickness of Perspex... -
SSteve4Physics replied to the thread Cutting the Dose Rate in half with shielding.Yes. Good point. There is no indication of what the original thickness of shielding is. I (unjustifiably) assumed the original...
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SSteve4Physics replied to the thread Mixing water and ice.That’s a good approach. When I was teaching I was preparing students for external examinations set by national/international examination...
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SWhen I gave exams, I required no numerical answers and I banned calculators during the exam. I expected all answers to be expressions...
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SSteve4Physics replied to the thread Mixing water and ice.@hmparticle9, I also favour the use of spreadsheets where possible. But if unable to use one (e.g. under examination conditions) don’t...