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- เผยแพร่เมื่อ 23 มิ.ย. 2024
- Welcome to Tech info. The 1920s, also known as the "Roaring Twenties," was a decade of significant technological advancement. In this video we will review the top 10 inventions and innovations in 1920’s that had a significant impact on humans by improving communication, increasing productivity, and making life more comfortable and enjoyable. So, let’s get started.
1. Electric razors: Jacob Schick patented the first electric razor in 1928. The device used a motor-driven oscillating blade to provide a close shave without the need for soap or water.
2. Film sound: The first "talkie" motion picture, The Jazz Singer, was released on October 6, 1927. The film used the Vitaphone sound-on-disc system, which synchronized sound recordings with the film.
3. Band-Aids: The first Band-Aid adhesive bandage was invented by Earle Dickson in 1920. Dickson, who worked for Johnson & Johnson, created the bandage to help his wife, who frequently cut herself while cooking.
4. Loudspeakers: The first practical loudspeaker was invented by Oliver Lodge in 1898, but it wasn't until the 1920s that the technology became widespread. In 1925, the first public address system using loudspeakers was installed at the Royal Albert Hall in London.
5. Iron lung: The iron lung was first developed in the 1920s by Philip Drinker and Louis Shaw, with the first model being produced in 1928. The device was used to help people with respiratory problems, particularly polio, by using negative pressure to expand the lungs and help the patient breathe.
6. Electric guitars: The first electric guitars were developed in the 1920s, with several inventors contributing to the technology. In 1931, the Rickenbacker "Frying Pan" guitar became the first commercially available electric guitar.
7. Electric typewriter: The electric typewriter was invented by James Smathers in 1920, but it was not widely adopted until the 1930s. The device used a motor to power the type bars, allowing for faster and more accurate typing.
8. Helicopter: The first successful flight of a helicopter occurred on June 26, 1936, with the development of the Focke-Wulf Fw 61. However, the technology for the helicopter was developed throughout the 1920s, with several inventors making significant contributions.
9. Flash photography: The invention of flash photography is attributed to Harold Edgerton, who developed the technology while working on his doctoral thesis at MIT in the late 1920s. The first commercial flashbulbs became available in 1930.
10. Polaroid camera: The Polaroid camera was invented by Edwin H. Land in 1928, with the first model, the Model 95, becoming available in 1948. The camera used self-developing film, allowing photographers to see their photos almost instantly.
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