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A microwave oven or simply microwave is an electric oven that heats and cooks food by exposing it to ... (1–1.5 inches) of a ... (1,200 cu in; 0.71 cu ft ...
A microwave oven passes microwave radiation at a frequency near 2.45 GHz (12 cm) through food, causing dielectric heating primarily by absorption of the energy in water. Microwave ovens became common kitchen appliances in Western countries in the late 1970s, following the development of less expensive cavity magnetrons. Water in the liquid ...
The modern magnetron is a fairly efficient device. In a microwave oven, for instance, a 1.1-kilowatt input will generally create about 700 watts of microwave power, an efficiency of around 65%. (The high-voltage and the properties of the cathode determine the power of a magnetron.)
The 3D framework [Cu 3 (btc) 2 (H 2 O) 3] (btc: benzene-1,3,5-tricarboxylate) used in this study was first reported by Williams et al. [72] The open framework of [Cu 3 (btc) 2 (H 2 O) 3] is built from dimeric cupric tetracarboxylate units (paddle-wheels) with aqua molecules coordinating to the axial positions and btc bridging ligands. The ...
The same frequencies were already in use for terrestrial microwave radio relay chains. Nearly all C-band communication satellites use the band of frequencies from 3.7 to 4.2 GHz for their downlinks , and the band of frequencies from 5.925 to 6.425 GHz for their uplinks .
Physics is the scientific study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. [1] ...