Technology
Technology played a good part in America experienced during the 1920s.New advancements, new discoveries, and new inventions improved American lives.
One of the first major inventions to become a national was the automobile.The popularity of the automobile also brought economic prosperity.Also there was radio transmission consisted of a series of dots and dashes, transmitted by inefficient machines. The credit for inventing the todays radio/television transmission goes to Ernst Alexanderson, a Swedish-American engineer. After hard work, he invented a high-frequency alternator, with which transmission of radio waves became successful. A few years later, he developed a scanning disk and high-frequency neon lamp for television transmission.
The Traffic light invented by William Potts, a police officer from Detroit ,He made his invention by using red, green and amber lights, and wire. The traffic lights were installed for the first time in the region of Woodward and Michigan Avenues in Detroit, United States. Also in the 1920s, women used to blow-dry their hair by inserting a flexible pipe in the exhaust of a vacuum cleaner. In 1920, the first hair dryer was invented. Though the machine was not good enough and got overheated easily, it was,better than using a vacuum cleaner.There Was SomeThing Also very useful but maybe not as accurate,the lie detector,it was invented by John A. Larson, a medical student ,it measured the heartbeats and breathing rate of a person in order to check whether the person was lying or not. If the pulse rate and breathing were high, then an alarm would buzz, saying that the person was lying.
Another Good Technical invention during the 1920’s was the camera.The instant camera is capable of developing film image. It consists of a camera and portable darkroom in the same compartment. Edwin Land invented the first commercial instant camera in 1948, but it is reported that the first instant camera was developed by Samuel Shlafrock in 1923.
One of the first major inventions to become a national was the automobile.The popularity of the automobile also brought economic prosperity.Also there was radio transmission consisted of a series of dots and dashes, transmitted by inefficient machines. The credit for inventing the todays radio/television transmission goes to Ernst Alexanderson, a Swedish-American engineer. After hard work, he invented a high-frequency alternator, with which transmission of radio waves became successful. A few years later, he developed a scanning disk and high-frequency neon lamp for television transmission.
The Traffic light invented by William Potts, a police officer from Detroit ,He made his invention by using red, green and amber lights, and wire. The traffic lights were installed for the first time in the region of Woodward and Michigan Avenues in Detroit, United States. Also in the 1920s, women used to blow-dry their hair by inserting a flexible pipe in the exhaust of a vacuum cleaner. In 1920, the first hair dryer was invented. Though the machine was not good enough and got overheated easily, it was,better than using a vacuum cleaner.There Was SomeThing Also very useful but maybe not as accurate,the lie detector,it was invented by John A. Larson, a medical student ,it measured the heartbeats and breathing rate of a person in order to check whether the person was lying or not. If the pulse rate and breathing were high, then an alarm would buzz, saying that the person was lying.
Another Good Technical invention during the 1920’s was the camera.The instant camera is capable of developing film image. It consists of a camera and portable darkroom in the same compartment. Edwin Land invented the first commercial instant camera in 1948, but it is reported that the first instant camera was developed by Samuel Shlafrock in 1923.