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[11] [42] Using an oscilloscope made with Braun's new cathode ray tube, he produced the first pictures of the waveforms in a working detector, proving that it did rectify the radio wave. During this era, before modern solid-state physics , most scientists believed that crystal detectors operated by some thermoelectric effect. [ 32 ]
A mixer (also called a hand mixer or stand mixer depending on the type) is a kitchen device that uses a gear-driven mechanism to rotate a set of "beaters" in a bowl containing the food or liquids to be prepared by mixing them. Mixers help automate the repetitive tasks of stirring, whisking or beating.
Karl Ferdinand Braun was the first to conceive the use of a CRT as a display device in 1897. [9] The "Braun tube" became the foundation of 20th century TV. [ 10 ] In 1926, Kenjiro Takayanagi demonstrated the first TV system that employed a cathode-ray tube (CRT) display, at Hamamatsu Industrial High School in Japan. [ 11 ]
A Scientific Industries Inc. Vortex-Genie 2 vortex mixer in operation A vortex mixer , or vortexer , is a simple device used commonly in laboratories to mix small vials of liquid. It consists of an electric motor with the drive shaft oriented vertically and attached to a cupped rubber piece mounted slightly off-center.
A static mixer is a device for the continuous mixing of fluid materials, without moving components. [1] Normally the fluids to be mixed are liquid, but static mixers can also be used to mix gas streams, disperse gas into liquid or blend immiscible liquids .
Depending on the type of phase and the viscosity of the bulk, the agitator may be called a mixer, kneader, dough mixer, amongst others. Agitators used in liquids can be placed on the top of the tank in a vertical position, horizontally on the side of the tank, or less commonly, on the bottom of the tank.