Infrared, ultraviolet and x-ray telescopes (AQA A-Level Physics): Flashcards
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Practise the cards
10 cards from this deck
IR telescope wavelength range
IR telescope wavelength range
0.7 to 450 µm
IR atmospheric transparency windows
IR atmospheric transparency windows
3-5 µm and 7-14 µm
Why IR detectors cooled to near absolute zero
Why IR detectors cooled to near absolute zero
Prevent thermal contamination from own IR emissions
UV telescope wavelength range
UV telescope wavelength range
400 nm down to about 10 nm
UV detector principle used
UV detector principle used
Photoelectric effect - UV photons eject electrons
X-ray telescope wavelength range
X-ray telescope wavelength range
0.01 to 10 nm
Temperature range of X-ray emitting gas
Temperature range of X-ray emitting gas
to K
X-ray mirror technique name
X-ray mirror technique name
Grazing incidence - X-rays skim off mirror surface
Gamma ray telescope wavelength range
Gamma ray telescope wavelength range
Shorter than 0.01 nm
Gamma ray burst duration range
Gamma ray burst duration range
0.01 seconds to 1000 seconds