scientific+advancements

Scientific advancements Medicine and the human body
 * Zacharias Jannsen invents the first simple microscope.
 * Anton van Leeuwenhoek uses the first microscope to observe bacteria swimming in tooth scrapings.
 * One of Galileo’s students Evangelista Torricelli developed the first mercury barometer a tool for measuring atmospheric pressure and predicting the weather.
 * In 1714 a German physicist Gabriel Fahrenheit made the first thermometer to use a mercury glass his thermometer showed water freezing at 32 degrees.
 * In 1742 a Swedish astronomer Andres Celsius created another scale for the mercury thermometer. His scale said that water froze at 0 degrees.
 * In the middle ages the doctors had accepted as fact the writings of an ancient Greek physician named Galen.
 * Galen only dissected pigs and other animals and assumed that the human body was the same way.
 * But the Flemish physician named Andréa’s Vesalius proved Galen’s assumptions wrong.
 * He dissected human corpse and published his observations in the book on the structure of the human body filled with detailed drawings of organs, bones, and muscle
 * In the late 1700’s the British physician Edward Jenner introduced the first vaccine to prevent small pox.
 * He used the disease cow pox and found that the inoculation protected the human body from small pox.