Renaissance+and+Reformation+Invention

|| The Printing Press was an invention that is credited to Johannes Gutenberg. The printing press is a machine that imprints letters and symbols on a sheet of paper. The sheet of paper is placed against the type, and another flat surface or heavy cylinder is pressed against the paper. The invention of the printing press was one of the most significant in history. It increased the output of printed material and made it widely available to the population. Gutenberg, Johannes. //Printing Press//. 1450. //ABC-CLIO World History The Modern// //Era//. Web. 30 Nov. 2009.  = = =**The Mariner's Astrolabe**=
 * =**The Printing Press**=

This is a picture of The Mariner's Astrolabe, located in the Adler Planetarium and Astronomy Museum. The Astrolabe made it possible to keep track of the ship's position by comparing its position to the stars. In the 14th century, sailors at sea didn't dare lose sight of the coastline because they were afraid of getting lost. But, the astrolabe prevented that and let the sailors know the ship's location. Because this invention helped sailors know where they were, it allowed them to travel further, which lead into more trade. Mariner. //The Mariner's Astrolabe//. 14th century. Adler Planetarium and Astronomy Museum, Beyond Books. Type in the content of your page here.