Thursday, March 27th • Which of the following inventions do you feel has had the greatest impact on society? Why? • Barbed Wire, Telephone, Phonograph, Refrigerator, Light Bulb, Electric Sewing Machine, Camera
FYI: Life in the 1860s • No indoor electric lights • No refrigeration • In 1860, most mail from the East Coast took ten days to reach the Midwest and three weeks to get to the West Coast. A letter from Europe to a person on the frontier could take several months to reach its destination.
FYI: Life in the 1900s • Power stations across the country began providing electricity for lamps, fans, printing presses, and many other appliances.
By 1900, there were 1.5 million telephones in use all over the country, and Western Union Telegraph was sending roughly 63 million messages.
Patents • License to make, use, or sell an invention 1790-1860, 36,000 issued 1860-1890, 500,000 issued WHY?
Your task is to . . . • Identify the item that is patented. • Decide if it is for business/industrial use or personal use.
Think about it…. • What motivates people to invent and be innovative? • Take 2 minutes tobrainstorm an answerto this question
BRAINSTORM! • Think about some needs that you have when it comes to US History class. What do you need to help you learn better? • Jot down a few ideas on a separate sheet of paper.
INVENTION • Ms. Gammie will assign groups. You will work in your group to come up with an invention that solves one of the NEEDS we came up with as a class. • Follow the directions on your worksheet and create a drawing of your invention. • Everyone is responsible for his/her own worksheet!
Closer 3/27 • After today’s lesson, has your answer from the warm up changed? Why or why not?
Friday, March 28th • How might access to a washing machine improve society?
What’s the difference? • Discovery: The act of finding or learning something for the first time • Invention: A product of the imagination; a device or process created after study and experiment.Think: Creation • Innovation: A new idea, device, or methodThink: Improvement
Thomas A. Edison • Setup research lab • created a system for producing and distributing electrical power
Edison • Perfected the light bulb
Edison • Developed the phonograph
Edison • Developed the motion picture camera!
Edison Freaks Out the President! • Even though President Harrison was quite the “modern” President! Benjamin Harrison(President 1889-1893)
George Westinghouse • Made electricity safer and less expensive. • Developed a way to transmit it long distances. • More effective air brakes for trains
Other Key Inventions • Electric sewing machine • Cameras (hand-held) • Refrigerator
Meanwhile, back on the farm… Mechanical Reapers Sod busting plows Mechanized tractorsMeans less help was needed on the farm
Closer, 3/28 • What new technologies have made your teenage life different from the teenage life of the adults you know? Do you think they might be important to note in future Social Studies classes?
Inventions and Innovations Part 2 Making Metal for New Machinery
Making Metal for New Machinery The Old Way: What is happening here?
Making Metal for New Machinery Iron Puddler was responsible for heating the iron to the proper temperature to burn out impurities leaving wrought iron He has control of the final product, not the owner of the factory
The Bessemer Process - 1856 • Henry Bessemer patented the process making the production of steel easier and cheaper. The Bessemer ProcessEQUALSMass Production in steel industry
Process involves injecting air into molten iron to burn off excess carbon and other impurities.
Products Made of IronFrom the Vulcan Museum, Birmingham, AL (a huge iron producing region)
The Brooklyn Bridge, designed with steel cables suspended from high towers, was made possible by mass production. Due to the Bessemer Process, a new age of building began to sweep the nation!
Skyscrapers! Strong steel (plus elevators) mean that America’s teeming cities can now grow upwards!
Elevatorsby Elijah Otis • It took another innovation to begin the transformation of cities
“Old-timer – keeping up with the boys. Many structural workers are above middle-age.” Lewis Hine
Construction worker on lunch break while building the RCA Building at Rockefeller Center, 1932