Additionally , the sensitive amplifiers used in radio telescopes are cooled using liquid helium to reduce thermal noise .
Rapid single flux quantum digital electronics technology is a good example of cryotronics , as it is based on superconductors .
The sensitive amplifiers used in radio telescopes are cooled using liquid helium to reduce thermal noise .
Rapid single flux quantum digital electronics technology is a good example of cryotronics , as it is based on superconductors .