Crossword clues for bar magnet
bar magnet
Wiktionary
n. A magnet of rectangular shape.
WordNet
n. a magnet in the form of a bar with magnetic poles at each end
Usage examples of "bar magnet".
So, if you replace the bar magnet with an electromagnet, you can make BIG pulses of electricity.
Other examples of lies-to-children are the idea that the Earth's magnetic field is like a huge bar magnet with N and S marked on it, the picture of an atom as a miniature solar system, the idea that a living amoeba is a billion-year-old 'primitive' organism, the image of DNA as the blueprint for a living creature, and the connection between relativity and Einstein's hairstyle (it's the sort of crazy idea that only people with hair like that can come up with).
They do so because the situation resembles the manner in which opposite types of magnetic force are concentrated in the two ends, or poles,9 of a bar magnet.
Harold Castallare, working patiently with an apparatus which had so far consumed a great deal of current without producing anything more spectacular than some rather unusual corona effects, sneezed convulsively and dropped an ordinary bar magnet across two charged terminals.