December 2014 archive

Dec 27 2014

Ammeters and Internal Resistance

Question: Based on your previous post regarding voltmeters and internal resistance, I can safely assume that an ammeter must also have some internal resistance. What effect does this resistance have on current measurements, and what resistance value would minimize any error it introduces to the reading? Answer: It is indeed true that an ammeter must …

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Dec 25 2014

Santa may have been here, but …

… my daughter brought it!

Dec 24 2014

LEGO Ideas Exo Suit 21109

LEGO Ideas Exo Suit

What did your mother-in-law get you for Christmas?