Self-tutoring about electrical consumption: the tutor looks for the typical power rating of baseboard heaters. Investigating energy consumption, I was compelled to inquire about the wattage of baseboard heaters. Baseboard heaters, because of their variable length, are often discussed in …

Electricity: wattage of baseboard heaters Read more »

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Tutoring physics or chemistry, you might encounter Peukert’s Law, although it’s probably used more by industry. In my March 2 post I mentioned reserve capacity and Amp*hours as two ways to measure a battery’s potential output. Numerically they are convertible …

Battery output vs discharge rate: Peukert’s Law Read more »

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The tutor explains which terminal is the anode, which is the cathode, as well as polarity. In terms of electrochemistry, oxidation occurs at the anode; reduction occurs at the cathode. Perhaps less obvious is the answer to the question, “Which …

Electrochemistry: cells and batteries: anode vs cathode Read more »

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The tutor briefly explains the low-pass filter. This explanation draws on ideas from that of a high-pass filter (see my article here). A low-pass filter sends along low frequencies but blocks higher ones. The one we’re looking at today has …

AC Electricity, electronics: how a series low-pass filter works Read more »

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