The simplest model of a battery comprises an ideal voltage source that connects in series with a resistance whose value—often a few milliohms—depends on the battery’s electrochemical condition and ...
Occasionally, we find fun new electronic instruments in the wild and can’t resist sharing them with our readers. The item in question is the FNIRSI HRM-10 Internal resistance meter, which we show here ...
NyRee Clayton-Taylor, a creative writing teacher at Wheatley Elementary School in Louisville, Ky., feels lucky that her school’s administration supports her use of hip-hop in the classroom, but she ...
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