Ciekawostka: The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket

Evidence: 48 • authority: 88

Microwave radar diagnostics of piston motion in a free-piston-driven expansion tube. Abstract Application of microwave radar is a useful approach to gauge piston motion in a free-piston driver. One difficulty associated with conventional microwave technique is its spatial resolution during rapid velocity shifts at diaphragm rupture timings. This study, while departing from the standard practice of analyzing standing wave peaks, introduces an alternative by examining the phase shift of the microwave in-phase and quadrature signals. A compact free-piston-driven expansion tube, MX6.0, is used as the test bed for this technique. A microwave frequency of 4.2 GHz is used to take measurements in a…

Evidence: 41 • authority: 80

Time-Resolved Plasma Density Measurements in a Fluorescent Tube Using Microwave Interferometry by Radar REMPI

Evidence: 41 • authority: 72

A microwave oven, or simply microwave, is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. This induces polar molecules in the food to rotate and produce thermal energy (heat) in a process known as dielectric heating. Microwave ovens heat food quickly and efficiently; the heating effect is fairly uniform in the outer 25–38 mm (1–1.5 inches) of a homogeneous, high-water-content food item. The development of the cavity magnetron in the United Kingdom made possible the production of electromagnetic waves of a small enough wavelength (microwaves) to efficiently heat up water molecules. American electrical engineer Percy Spe…

Evidence: — • authority: 35