Telescopes Designed to Observe Infrared Radiation

question 35

Multiple Choice

Telescopes designed to observe infrared radiation:

• A) must be placed in orbit above Earth's atmosphere.
• B) can be placed on Earth's surface as long as the altitude is high enough to avoid water vapor, the prime absorber of infrared in the atmosphere.
• C) can be placed on Earth's surface as long as the altitude is high enough to avoid carbon dioxide, the prime absorber of infrared in the atmosphere.
• D) can be placed at any convenient location on Earth's surface because infrared radiation penetrates one of the "windows" of transparency in the atmosphere.