By Kendall Haven
Brimming with attention-grabbing and enjoyable proof approximately a hundred medical breakthroughs, this assortment provides the true tales in the back of the background of technology, while providing a breathtaking review of the heritage of technological know-how and an advent to a few of an important scientists in history.
Grades 6 and up.
Throughout background, technological know-how has replaced lives and dramatically altered the best way the universe is perceived. concentrating on the a hundred most important clinical occasions of all time—from Archimedes' discovery of the 2 primary rules underlying physics and engineering (levers and buoyancy) in 260 B.C.E. to human anatomy, Jupiter's moons, electrons, black holes, the human genome, and more—storyteller Kendall Haven has created a prepared reference for these looking details on technology discoveries.
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Additional info for 100 Greatest Science Discoveries of All Time
In addition to patenting his method of tracking time with a ball on an inclined plane, Congreve took out patents for paper that could be used to make money that couldn’t be forged, a method for protecting buildings against fire, Sir William Congreve the Younger and a way to use rockets to hunt whales! 55 AP 11 12 C1H 2 10 9 8 4 7 6 5 TER Tools of Timekeeping While fun to watch, these rolling ball clocks aren’t very interesting in terms of timekeeping innovation because what keeps the time is the motor that drives the arm, not the metal balls themselves.
Before you erase everything, though, use this drawing to help draw your gnomon. After all, without the gnomon your sundial isn’t going to be very useful! 32 PTE1R A12 11 CH 2 10 9 3 8 4 7 6 5 Chapter Two: Here Come the Hours F E O The gnomon must be the same size and have the same angle as lines OF and OE in your sundial drawing. Either trace the triangle FOE onto a separate sheet of thick paper, or repeat steps 1–5 (making everything the same length as before) until you have drawn triangle FOE.
Star Gazing by the hour Don’t worry if the sun is too shy to stick around all day and light up your sundial. Just like sailors in the sixteenth and seventeenth centuries, you can use a nocturnal and turn to other stars instead. The nocturnal was developed independently by the Spaniard, Ramon Lull, and Bernard of Verdun in the thirteenth century. Astronomers already knew that while most stars moved through the sky at night, Polaris stayed in place. Polaris lies directly over the North Pole, so as the earth spins on its axis, the m ar 1 f ril 1 12 11 1 eb 1 p 0 1 a 2 9 midday 1 dec 1 nov 1 2 oc midnight 3 8 7 7 6 5 4 4 3 8 y1 ju l doesn’t change.
100 Greatest Science Discoveries of All Time by Kendall Haven