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Michael Petach (December 30, 1959 – June 25, 2024) was an American engineer who made contributions in the fields of cryogenics and thermoacoustics in developing systems for space applications. He worked as an engineer for Northrop Grumman. His notable work revolved around developing cryocoolers and the traveling-wave thermoacoustic electric ...
To allow mid-infrared observations within the JWST, the MIRI instrument has an additional cooling system. It works roughly similar to how most refrigerators or an air-conditioner works: a fluid is brought down to a cold temperature in the warm section, and sent back to the cold section where it absorbs heat, then it goes back to the condenser.
Ji-Xin Cheng is an academic, inventor, and entrepreneur. He holds the Moustakas Chair Professorship in Optoelectronics and Photonics at Boston University. [1] His inventions span optical imaging, cancer diagnosis, neuromodulation, and phototherapy of infectious diseases.
Nitrogen is a liquid under −195.8 °C (77.3 K).. In physics, cryogenics is the production and behaviour of materials at very low temperatures.. The 13th International Institute of Refrigeration's (IIR) International Congress of Refrigeration (held in Washington, DC in 1971) endorsed a universal definition of "cryogenics" and "cryogenic" by accepting a threshold of 120 K (−153 °C) to ...
Originally this was considered to be impossible. For some time it looked as if it would be impossible to cool below the lambda point of 4 He (2.17 K), but the low-temperature group of the Eindhoven University of Technology managed to cool to a temperature of 1.73 K by replacing the usual 4 He as refrigerant by its rare isotope 3 He.
The company also participated in the production of high performance infrared common modules (SADA II) for the US Army as well as 2D staring arrays mainly for use with missiles. At the beginning of 2000, Sofradir began delivering QWIP detectors in cooperation with Thales Research and Technologies (TRT) and uncooled products based on the ...
MIRACL, or Mid-Infrared Advanced Chemical Laser, is a directed energy weapon developed by the US Navy. It is a deuterium fluoride laser , a type of chemical laser . The MIRACL laser first became operational in 1980. [ 1 ]
The International Institute of Refrigeration (IIR) (also known, in French, as the Institut International du Froid (IIF)), is an independent intergovernmental science and technology-based organization that promotes knowledge of refrigeration and associated technologies and applications on a global scale that improve quality of life in a cost-effective and environmentally sustainable manner ...