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Invention History in 1920s

I'm looking for a website that talks about inventions history in 1920 (USA). If anyone knows, please gives me some of them. Thanks.
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ZeusGod
Asked:
ZeusGod
1 Solution
 
dambigbuckCommented:
Here's a good site with links:

http://oneonta.k12.ny.us/ms/the20s.htm

And another ok site:

http://www.angelfire.com/co/pscst/invent.html

Good luck!
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ZeusGodAuthor Commented:
I need some others. I already had these two.
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dambigbuckCommented:
Well, here's a link for general 1920's information:

http://www.richland2.org/svh/Media/socstud/1920s.htm

Have you tried Britannica online yet?  Go there to try your search and see what you get.

http://www.britannica.com

Good luck.
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davidleoyCommented:
Dear ZeusGod,

I had did a project on a similar topic and found this site extrememly useful.

http://www.angelfire.com/co/pscst/invent.html

Here you can find inventions on the automobile etc.

IT's parent site is:

http://www.angelfire.com/co/pscst/

Also check this out:

http://www.lib.lsu.edu/sci/chem/patent/srs136.html

Here's a link to interesting inventions around that era:
http://www.arrowweb.com/M1/otr/invent.html

Finally, there is this comprehenive directory which you should take note of:
http://members.aol.com/AACTchrNet/Invention.html


Hope they are useful for you!!




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quanghocCommented:
TECHNOLOGIES IN THE 1920S
OUTLINE
I. 1920 KDKA
+ Frank Conrad, who worked for Westinghouse in Pittsburgh
+ The first commercial radio broadcast is believed to have taken place August 20, 1920 by station WWJ in Detroit
+ Radio sales grew at a staggering pace, from $60 million in 1922 to over $350 million in 1924
+ By the end of 1922, 563 other licensed stations will join KDKA.
+ KDKA Radio was one of four original stations on the AT&T Network now.

II. 1924 Execution
+ The State of Nevada introduces death by gas chamber.
+ The hydrocyanic gas destroys the body's ability to process blood hemoglobin
+ Convicted murderer Gee John takes 6 minutes to die.
+ States using Gas Chamber: Arizona, California, Maryland, Missouri, Wyoming
+ In most cases the prisoner is allowed to choose the method of execution, depending on his or her date of sentencing. Eleven people have been executed by lethal gas in the United States since 1976.
 
III. 1926 Rocket
+ Robert Hutchins Goddard (1882-1945) Professor of Physics at Clark University in Worcester, Massachusetts on March 16, 1926, makes the first successful launch of a liquid-fueled rocket at his aunt Effie's farm in Auburn, Massachusetts.
+ It took off to a height of 41 feet, leveled off and later hit the ground, all within 2. 5 seconds, averaging about 60 mph
+ He died of cancer on August 10, 1945, in Baltimore.

IV. 1927 Television
+ In 1922, American Philo T. Farnsworth, who was then a 15-year-old Idaho farm boy born in a log cabin, described to his friends and teachers how an electronic TV system might work.
+ Philo Farnsworth demonstrates the first television for potential investors by broadcasting the image of a dollar sign. Farnsworth receives backing and applies for a patent, but ongoing patent battles with RCA will prevent Farnsworth from earning his share of the million-dollar industry his invention will create.
+ 1923 Westinghouse, General Electric, RCA, and AT&T entered into television research
+ 1927 First long distance television broadcast from Washington to New York performed by AT&T.
+ Working with Pittsburgh’s Westinghouse Electric Corporation, Zworykin invented the iconoscope in 1923—a tube for television transmission.
+ 1928 Federal Radio Commission was established.

V. 1929 Frozen Food
+ Clarence Birdseye offers his quick-frozen foods to the public. Birdseye got the idea during fur-trapping expeditions to Labrador in 1912 and 1916, where he saw the natives use freezing to preserve foods.
+ 1924 founded Birdseye Seafoods, Inc.

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ZeusGodAuthor Commented:
Thanks everyone
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ZeusGodAuthor Commented:
Comment accepted as answer
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