OBJECT HISTORY: A Twenty-sided Die

Dice are used in games around the world to generate a random number. Traditionally the die is cubical; however there are multiple forms of non-cubicle die, such as, the 20-sided die. Ancient die were typically made from bones, wood, or rock. Today, die of all shapes are usually made from resin. The 20-sided die can…

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OBJECT HISTORY: Yerkes Telescope

The 40-inch refracting telescope at Yerkes Observatory in Williams Bay, Wisconsin, contains the worldā€™s largest refracting lenses.Ā Built in 1895, the telescope contains two lenses, one made of crown glass, and one made of flint glass. The lenses are each 40 inches in diameter, weigh 500 pounds, and haveĀ a 62-foot focal length. The telescope and observatory…

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Williams Bay, WI

Captain Israel Williams founded Williams Bay, Wisconsin, in 1835. Williams and his two sons originally traveled to Wisconsin from their Massachusetts home to look for good farmland. Williams Bay was later named in honor of Captain Williams.Until 1890, only a few families…

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Astronomy in the 1900s

In the 1800s, astronomers valued telescope magnification to investigate planets and stars. In the 1900s, astronomers started to ask questions about the structure of our galaxy, the Milky Way, which lead to greater emphasis on light-gathering power. By 1951, William Morgan at…

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Yerkes Telescope Construction and Use

Ā The construction of theĀ 40-inch refracting telescopeĀ at Yerkes Observatory inĀ Williams Bay, Wisconsin, was directed by George Hale, an astrophysicist at the University of Chicago, and funded by Charles Yerkes, a Chicago businessman. The telescope is made of 40-inch glass lenses manufactured by the…

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