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Infrared: Quiz


Question 1: [12] ________ operate through a process involving the conversion of ambient light photons into electrons which are then amplified by a chemical and electrical process and then converted back into visible light.
Night vision deviceUnited StatesUnited States Air ForceM16 rifle

Question 2: Since infrared radiation is emitted by all objects based on their temperatures, according to the ________ radiation law, thermography makes it possible to "see" one's environment with or without visible illumination.
Planck's lawSunPhotonBlack body

Question 3: Long-wave infrared: 8 to 12, or 7 to 14 micrometers: the atmospheric window (Covered by HgCdTe and ________).
MicrobolometerThermographic cameraSiliconThin-film transistor

Question 4: 1970: Willard Boyle & George E. Smith propose CCD at ________ for picture phone;
Bell SystemWestern ElectricAmerican Telephone & TelegraphBell Labs

Question 5: Non-military uses include thermal efficiency analysis, remote temperature sensing, short-ranged wireless communication, ________, and weather forecasting.
Atomic absorption spectroscopySpectroscopyAnalytical chemistryAtomic emission spectroscopy

Question 6: Military applications include target acquisition, surveillance, ________, homing and tracking.
AirbagRadar detectorNight visionRetroreflector

Question 7: ________ examines absorption and transmission of photons in the infrared energy range, based on their frequency and intensity.
Ultraviolet-visible spectroscopyInfrared spectroscopyRotational spectroscopyRaman spectroscopy

Question 8: Of this energy, 527 watts is infrared light, 445 watts is visible light, and 32 watts is ________ light.
Electromagnetic spectrumVisible spectrumX-rayUltraviolet

Question 9: Remote controls and IrDA devices use infrared ________ (LEDs) to emit infrared radiation which is focused by a plastic lens into a narrow beam.
Gas-discharge lampLight-emitting diodeLED lampFluorescent lamp

Question 10: What does the following picture show?

  Plot of atmospheric transmittance in part of the infrared region.
  A thermographic image of a dog
  The Spitzer Space Telescope is a dedicated infrared space observatory currently in orbit around the Sun. NASA image.


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