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Magic Lantern Projector
The magic lantern project was mostly developed in the 17th century but in the 19th century smaller versions were produced as toys. The way the magic lantern projector works is by having a mirror behind the projector to guide the light through a small triangular hole in glass. -
Air Brakes
Air brakes used compressed air to stop the vehicle in a very efficient way and are mostly used in heavy vehicles like trucks and buses. -
Typewriter
The first typewriters were introduced in 1874. The typewriter quickly became an important tool for practically all writing other than personal handwritten letters. -
Telephone
The telephone works by putting your voice into the device and it transmits through a cord and your voice comes out the other phone reproducing the voice In Greek terms, this is τῆλε (tēle, far) and φωνή (phōnē, voice), together meaning distant voice. -
Janney Coupler
The Janney coupler was invented to link trains without the workers having to get in between the carts. -
The Bessemer and then the open-hearth process in the steel mills
The Bessemer process was the first process for the making steel from molten iron before the first open hearth furnaces.