History 4 and 5: The Pencil

History 4, Lesson #89: https://essaybank.home.blog/2020/02/21/history-lesson-90-the-heliocentric-theory-vesalius-%e2%9c%8f%ef%b8%8fand-the-pencil-%e2%9c%8f%ef%b8%8f/ History 5, Lesson #11: https://essaybank.home.blog/2020/09/14/history-lesson-15-2/ These two essays that include the pencil are a two-part story.

History Lesson #40

Electromechanical Relay Revolver Morse Code Circuit Breaker Electromechanical Relay Joseph Henry had studied electromagnetic properties for a while, and he used this knowledge to invent the first relay. The Electromechanical Relay increased the power of an electric current, and allowed telegrams to travel much farther than just a few miles. Now you could have a …

History Lesson #35

Combine Solar Compass Propeller Mechanical Computer Combine John Hascall left New York to move to Michigan to get started in the farming industry, but he had an issue. He couldn’t harvest all the crops in time. So his neighbor, Hiram Moore, invented the combine to help Hascall finish his harvesting. The combine combines the stages of …

History Lesson #30

Inventions Platform Scale T-Rail Multi-Coil Magnet Mechanical Reaper Platform Scale Thaddeus Fairbanks invented the platform scale in America in 1830. A platform scale is accurate, and it is the kind of scale you might use on the road. If you have ever been to a farmers market or grocery store, they might have platform scales …

History lesson #15

Pencil Stethoscope Tunneling Shield Paved Roads Pencil For Information on the pencil from another lesson, click on the link below https://essaybank.home.blog/2020/02/21/history-lesson-90-the-heliocentric-theory-vesalius-%e2%9c%8f%ef%b8%8fand-the-pencil-%e2%9c%8f%ef%b8%8f/ Stethoscope Laennac invented the stethoscope in France while working at a hospital. He got inspiration from watching children playing a game. One would hold a hollow stick to his/her ear, and the other would …

History Lesson #10

Summarize each of the inventions you studied this week and how they impacted history. Vapor-Compression Theory Oliver Evans Percussion Ignition Canning Process Vapor-Compression Theory In the Summer it is hot and that can be uncomfortable for us and it would make food spoil faster than if the food was cold. Oliver Evans (see below) wrote …