microwaves
41Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
42Level sensor — Level sensors are used to detect liquid level. The liquid to be measured can be inside a container or can be in its natural form (e.g. a river or a lake). The level measurement can be either continuous or point values. Continuous level sensors… …
43List of United States inventions — 1700s1731 Sextant * The sextant is an astronomical instrument that is used to determine latitude for navigation. It does this by measuring angular distances, like the altitude of the sun, moon and stars. The sextant was invented independently in… …
44EmDrive — (also Relativity Drive) is the name of a spacecraft propulsion system proposed, and reportedly developed, by Roger Shawyer.cite news|title=Relativity drive: The end of wings and wheels?|date=2006 09 08|author=Justin Mullins|issue=2568|work=New… …
45Günter Nimtz — (1936) is a German physicist. Working at the 2nd Physics Institute at the University of Cologne ( Universität zu Köln ) in Germany, he has been conducting experiments that purport to show that under certain conditions, particles may travel faster …
46EEsof — was founded in 1983 by an entrepreneur, Charles J. ( Chuck ) Abronson, and a former Compact Software employee, Bill Childs [ [http://capwireless.com/About Us/Staff bios.html Charles J. Abronson bio at CAP Wireless] ] [… …
47Compact Software — was the first successful microwave computer aided design (CAD) company. Contents 1 History 2 Notes 3 References 3.1 Articles by Besser …
48Thing (listening device) — The Thing, also known as The Great Seal bug, was one of the first covert listening devices (or bugs ) to use passive electromagnetic induction to transmit an audio signal. Operating principles The Thing was very simple by today s standards, but… …
49Modular Man — For other uses, see Modular Man (disambiguation). Modular Man The Modular Man atop the Empire State Building on the cover of Marvel Team Up #90 (Jan 1980). Pencils by Al Milgrom, inks by Jack Abel …
50Microwave Active Composition — is a brand of microwave sensitive liquid chemicals sold by Atlanta Chemical Engineering LLC. The chemical undergoes color change if it interacts with intensive microwaves. There are two major types of microwave active compositions reversible and… …
