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 Bell is credited with inventing and obtaining the first patent for the telephone.  Patent – is the exclusive right granted by a government to an inventor.

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Presentation on theme: " Bell is credited with inventing and obtaining the first patent for the telephone.  Patent – is the exclusive right granted by a government to an inventor."— Presentation transcript:

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2  Bell is credited with inventing and obtaining the first patent for the telephone.  Patent – is the exclusive right granted by a government to an inventor to manufacture, use, sell, an invention for a certain number of years.

3  He once worked as a teacher for the deaf and had always been interested in the study of sound.  His work made it difficult to focus entirely on his experiments and in the fall of 1873, Bell gave up all students except 2.  This allowed him time to concentrate on his laboratory work.

4  Telegraph messages were becoming more popular and people needed a way to transmit more than one message at a time.  Bell became friends with Thomas Watson, who was an electrical mechanic, and he became Bell’s assistant.

5  Elisha Gray and Alexander Graham Bell both applied for patents with the U.S. Patent Office. It’s not clear who was there first, but Bell got the patent.  3 days later, Bell and Watson were working in their lab when Bell said, “Mr. Watson, come here, I want to see you.”  Watson, in another room, heard him clearly!  Some people wonder to this day if Bell stole the design from Mr. Gray. ?????? Bell Movie

6 Thomas Edison

7  Edison is credited with over 1,000 inventions, with patents  He is noted for inventing the phonograph and worked on the telephone  First Movie Projector  Central Power Stations  Electronic Voting machine

8  Surprisingly, Edison did not invent the first light bulb. Others had been tried, but they could not seem to find a filament that would burn long enough to make a long lasting bulb possible.

9  By 1879, he found that carbon burned for hundreds of hours before burning out.  received a patent for having the first successful glowing white with heat, light.

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12 Orville Wright Wilbur Wright

13  Orville and Wilbur Wright were NOT the first to build an airplane and fly.  They WERE the first, however, to build and fly a plane that was controlled by an engine and that could be controlled by a pilot.

14  They spent a great deal of time observing birds in flight. They noticed that wind flowing over their wings created lift. By changing the shape of their wings, birds could turn and maneuver.  They believed they could reproduce this technique in a man-made craft.

15  The first few years of the 20 th century, they experimented with gliders that could be manned or unmanned.

16  The Wright Brothers built a full-size glider, took it to Kitty Hawk, North Carolina, to test it.  Kitty Hawk, NC - They chose this site because of the wind, sand, hilly land, and remote location.

17  During the tests in 1901, they faced many problems. The glider spun out of control It lacked enough lifting power  They commented that they would probably not see flying aircraft in their lifetime.

18  After making necessary adjustments, they once again tested the glider which proved successful.  They then turned their attention to a powered plane.  Studying how propellers worked, they designed a motor and new craft to handle the extra weight.

19  On December 17 th, 1903, Orville Wright took the aircraft for a 12 second flight, 120 feet!  This was the first successful, powered, piloted flight in history!

20 The Wright Brothers

21 1864 -1943 peanuts George Washington Carver

22  He was born in the 1860s on a horse farm in Diamond Grove, Missouri.  His parents were George and Mary.  His master was Moses – Moses Carver.  Yes, George Washington Carver was born a slave.

23  In 1865 the Civil War was over and there was no longer slaves.  George and his brother stayed with Moses Carver and his family anyway.  The Carvers were the only family he knew.

24  Carver was a botanist, scientist, educator, and inventor.  He conducted several experiments with peanuts that led to the discovery of shampoos, soaps, and 19 new shades of dye.  He is credited with changing agriculture in the South

25  The Boll Weevil – Is a bug that eats cotton plants. In the 1900s the boll weevil came to the US from Mexico and worried cotton farmers. George Washington Carver told them to plant GOOBERS! Taught Farmers that they needed to rotate their crops to replenish the soil -

26  Goobers– Goober is an African American name for peanut. Slaves brought peanuts from Africa. Boll Weevils didn’t like peanuts.

27  What else can we do with peanuts? People thought they were only good for hogs! He discovered over 300 ways to use peanuts so that peanut farmers could sell their crops. He proved that African Americans could contribute to society. ( handout)


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