The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Austrian professor Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and water level.
invented by Shintaro Uda
A Yagi–Uda antenna or simply Yagi antenna, is a directional antenna…
invented by Franz Fischer Hans Tropsch
The Fischer–Tropsch process is a collection of chemical reactions that…
invented by James Martin
In aircraft, an ejection seat or ejector seat is a system designed to rescue…
invented by Ernst Ruska
An electron microscope is a microscope that uses a beam of accelerated…
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