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Period: to
20ty centry
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vacuum
James spengler created the vacuum. before the vacuum people hung their rugs and beat them to get dust and dirt out of it. . soon he mest around with making a vacuum....he used a broom a pillow case,and clening atachments.it later on vacuums got better desings and still remain useful today. its important beasue it pickes up dust hididn in your floors and rugs. Bellis, Mary. "Invention and History of Vacuum Cleaners." About.com Inventors. N.p., n.d. Web. 15 Oct. 2012. <http://inventors.about.com -
airconditionar
before the airconditoner they used a fan and a cloth to make the air cold.soon in1902 willis carrier invented the airconditioner. "History of Air Conditioning." History of Air Conditioning. N.p., n.d. Web. 15 Oct. 2012. http://www.facstaff.bucknell.edu/mvigeant/therm_1/ac_final/bg.htm. -
first aircraft
the first aircraft was built and desinged in kitty hawk north carolina by the wright brothers.in 1903 the wright brothers had sucessfully powerd a moveable track for the aircraft.in 1904 the flight lasted five minutes and was known as the flyer|| Bellis, Mary. "Airplanes, Flight." About.com Inventors. N.p., n.d. Web. 12 Oct. 2012. http://inventors.about.com/od/fstartinventions/a/Airplane.htm. -
1st tractor
the first tractor was made in 1892 and kept getting updated thru out the years..the origanal inveter was john froelich its important because if you have a big farm you can use a tractor to travel and cut your grass. Bellis, Marry. "History Of Tractors." About.com Inventors. N.p., n.d. Web. 15 Oct. 2012. http://inventors.about.com/od/tstartinventions/a/tractors.htm. -
tommygun
the inventur of the tommy gun was John thomson.Durinng world war2 they had sucess on using the tommy gun.after the tommy gun was used in wars it was more used by gansters and mofias. it was imortant beacuse if we didnt have it we might have nt won world war2 Alex, Dan. "M1 Thompson (Tommy Gun) Submachine Gun (1938)." M1 Thompson (Tommy Gun). N.p., n.d. Web. 15 Oct. 2012. http://www.militaryfactory.com/smallarms/detail.asp?smallarms_id=66. -
peniclein
in 1928 penicillin was discoverd by alexandria fleming. he discoverd that the mold on the penicillin killed viruses.20 years later in 1940 is when people started to know about penicillin and use it.its important because it cures an std and outher vireses Bellis, Mary. "The History Of Penicillin." About.com Inventors. About.com, n.d. Web. 12 Oct. 2012. http://inventors.about.com/od/pstartinventions/a/Penicillin.htm. -
iron lung
th iron lung was invented by Phillip Driker.He used a metal box and two vacume cleners to test the therey. the iron lung forces ur lungs to brethe like normal.in 1927 the iron lung was put in the Bellevue hospital.soon the iron lung got a better desing by Jhon Emerson.if we didnt have the iron lung hundreds of people wouldve died.it was kinda useless cause u wasted ur time sitting in a tube doing nutthing -
radar
in 1887 heinrich herts started to experiment on radio waves in his lab.he counted how fast it went and discoverd the materials that detect it.around the 1920s and 1930s the radar systm became more useful in wars to locate their ships and guid the plains "RADAR and Doppler RADAR Invention and History." RADAR and Doppler RADAR Invention an Bellis, Mary. "History of the Iron Lung." About.com Inventors. N.p., n.d. Web. 12 Oct. 2012. http://inventors.about.com/od/istartinventions/a/iron_lung.htm. -
microwave
Percy spencer experimented with popcorn in his lab.Percy put the popcorn kernals by the megatron tube and the pocorn was popping every where in the lab.Soon he put the tube in a metal box that cooked food. -
kevlar
in 1966 stephanie kwoleks invented the kelvar.its made with familer materials like a bullet proof vest used by police.the kevlar is a light weght vest and is strong Bellis, Mary. "The History of Kevlar - Stephanie Kwolek." The History of Kevlar - Stephanie Kwolek. N.p., n.d. Web. 12 Oct. 2012. http://inventors.about.com/library/inventors/blkevlar.htm.
