Search results
Results from the WOW.Com Content Network
These materials exhibit the magnetic shape memory effect and can also be used as actuators, energy harvesting devices, and sensors. [15] When the martensitic transformation temperature and the Curie temperature are the same (based on composition) the magnitude of the magnetic entropy change is the largest. [ 2 ]
The pulse tube refrigerator (PTR) or pulse tube cryocooler is a developing technology that emerged largely in the early 1980s with a series of other innovations in the broader field of thermoacoustics.
One variant, the Einstein–Szilard electromagnetic refrigerator used a Einstein–Szilard electromagnetic pump to compress a working gas, pentane. [2] Although the refrigerator was not a commercial success, the Einstein–Szilard pump was later used for cooling breeder reactors , where its inherent reliability and safety were important.
Electromagnetic launchers. Electromagnetic launchers are electric projectile weapons that use a magnetic field to accelerate projectiles to a very high velocity. These launchers require high power pulse sources in order to work. These launchers can be realised by the use of the quick release capability and the high power density of the SMES ...
The absorption refrigerator is of unique importance in setting an autonomous quantum device. Such a device requires no external power and operates without external intervention in scheduling the operations . [38] [39] [40] The basic construct includes three baths; a power bath, a hot bath and a cold bath. The tricycle model is the template for ...
Masers are used as timekeeping devices in atomic clocks, and as extremely low-noise microwave amplifiers in radio telescopes and deep-space spacecraft communication ground-stations. Modern masers can be designed to generate electromagnetic waves at microwave frequencies and radio and infrared frequencies. For this reason, Townes suggested ...
Van Eck phreaking, also known as Van Eck radiation, is a form of network eavesdropping in which special equipment is used for a side-channel attack on the electromagnetic emissions of electronic devices. While electromagnetic emissions are present in keyboards, printers, and other electronic devices, the most notable use of Van Eck phreaking is ...
"Electromagnetic interference" (EMI) is defined as the "degradation in the performance of equipment or transmission channel or a system caused by an electromagnetic disturbance" (IEV 161-01-06) while "electromagnetic disturbance" is defined as "an electromagnetic phenomenon that can degrade the performance of a device, equipment or system, or ...