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The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate. It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd , who patented it in the U.S. on November 11, 1930 ( U.S. patent 1,781,541 ).
A refrigerator with a crisper drawer at the bottom of its main compartment Open crisper drawers. A crisper drawer (also known as a crisper) is a compartment within a refrigerator designed to prolong the freshness of stored produce. Crisper drawers have a different level of humidity from the rest of the refrigerator, optimizing freshness in ...
Caterpillar D17000 × 2 (most) Hercules DFXD × 2 (11) Buda 6DH1742 × 2 (10) Caterpillar D342 × 2 (last 4) 380–400 hp (280–300 kW) 45-ton: 1940–1956: B-B: Cummins × 2: 300 hp (220 kW) GE 45-Ton switcher "Drop Cab" 1944–1949: 103: B-B: GE 45-Ton switcher "Off-Center Cab" 1941: 9: B-B: Cooper Bessemer EN6: GE 46-Ton switcher "Drop Cab ...
Thermoelectric cooling uses the Peltier effect to create a heat flux at the junction of two different types of materials. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current.
The Rhaetian Railway Ge 2/2 is a class of small metre gauge 1 kV DC electric locomotives operated by the Rhaetian Railway (RhB), which is the main railway network in the Canton of Graubünden, Switzerland. The class is so named under the Swiss locomotive and railcar classification system.
The Joker is a supervillain appearing in American comic books published by DC Comics.Created by Bill Finger, Bob Kane, and Jerry Robinson, the character first appeared in the debut issue of the comic book Batman on April 25, 1940.