I discover my bicycle headlamp wasn’t working because some 18650 batteries have a button top. Oh my, that was embarrassing to admit The 18650 ‘battery’, like many batteries, is named according to its dimensions....
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rogerfrost.com is a compendium of ideas for using technology with sciencey questions in mind. When Roger Frost started it in 1995 it offered ideas to school science teachers. Since 2020 it’s broadened to cover home automation and all sorts of gadgets and ways to monitor, or understand, what’s going on around us.
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Roger Frost has been writing since 1988 and this web includes his paper published articles about the developing use of the Internet; the work of scientists and how any of us might find technology useful at home or school.
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