A Kitchen Course in Electricity and Magnetism by David Nightingale, Christopher Spencer

By David Nightingale, Christopher Spencer

Electricity is throughout us: automobiles, phones, pcs, lighting fixtures -- the trendy international runs fullyyt on electrons. yet what are electrons? How do they behave? How can we regulate them? This e-book will enable you construct a battery, notice static electrical energy and build a easy present meter, all utilizing universal goods out of your kitchen. alongside the best way you will know about the which means of "voltage" and "current", what makes an LED paintings and the adaptation among AC and DC. The final bankruptcy makes use of transistors -- the elemental development blocks of each computing device -- for plenty of attention-grabbing experiments. With lots of colourful illustrations, historic tales and a straightforward, available variety, "A Kitchen path in electrical energy and Magnetism" might be an excellent begin for budding and novice scientists who are looking to examine extra approximately how the realm works.

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See Fig. 18 on p. — thought he had found in the frog itself a natural source of electricity, which he might use as a battery. Indeed, there is a fish called the electric ray that does naturally produce electric charge, which paralyzes its victims. The electric eel is another animal that stuns its prey electrically, but it would be somewhat impractical to try to use either of these animals as batteries. , to currents. The pressing question in Volta’s time was as follows: How could these currents be maintained?

16 milliAmps). 122. 34 2 Current and Voltage later he married a wealthy widow, and around 1814 he and his wife travelled to France to demonstrate some of his discoveries, with the 22-year-old Michael Faraday as both valet and assistant. Faraday, of course, would (see p. 106) go on to even greater fame. 6 Sidebar Experiment: Electroplating Before continuing with other ways of obtaining voltages—for example using a potato—we note that Volta’s battery may, in principle, be run in reverse. Recall that we had two different metals in an acid, giving us electricity.

We do not need it in our introduction, but for completeness we mention it here. Visualize an imaginary balloon that has no effect on anything, enclosing the big central (+) charge. The electric field lines penetrate through this imaginary balloon, and it was shown by the German mathematician, astronomer, and theoretical physicist, Johann Carl Friedrich Gauss (1777–1855), who had shown great precociousness in mathematics as a child, that the outflow of those lines was directly proportional to the big charge in the middle.

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