Victoria G. Christensen is a geologist and a hydrologist with over 20 years of experience, who writes on a variety of scientific and engineering topics for children. She lives in Fargo, North Dakota, with her husband and three great kids.
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Victoria G. Christensen: How Batteries Work
Have you ever wondered how a set of batteries power the remote for your TV? Or have you ever wanted to examine the battery inside a car? Without batteries, we would not be able to power many of the …
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€58.44
Victoria G. Christensen: How Conductors Work
Did you know that trees, buildings, and even people can act as conductors for electricity? Or have you ever wondered why we’re warned not to go outside during a thunderstorm? Scientists, engineers, …
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€58.30
Victoria G. Christensen: How Sensors Work
Have you ever seen lights turn on automatically when you step into a room? Or have you ever wondered how a garage door knows to not close when someone is standing beneath it? What these and countless …
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€57.98
