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Glossary term: 적외선(IR)

Description: 적외선은 파장이 가시광선보다는 길지만 마이크로파나 전파보다는 짧은 전자기복사입니다. 적외선의 파장 범위는 700나노미터에서 1밀리미터이지만 가시광선의 파장 범위는 약 400~700나노미터입니다. 따라서 적외선은 인간의 눈으로는 보이지 않으며 특수 카메라로만 볼 수 있습니다. 우주의 분자구름, 인체, 갈색왜성처럼 절대온도로 수십에서 수천 켈빈의 범위에 있는 열원 물체는 적외선 영역에서 전자기파 방출이 최대가 됩니다.

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

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The space shuttle is shaped like a stubby airplane with a grayscale image on the left and blue-red colorscale on the right

Infrared Reentry Analysis: Shuttle Orbiter Columbia

Caption: A composite image of the Space Shuttle Columbia's reentry, captured by NASA's Kuiper Airborne Observatory. The right hand side of the image was taken in infrared light with the left hand side taken in visible light. The image reveals the intense heating patterns encountered during descent. The temperature scale for the infrared image goes from violet at the coolest end to red at the hottest. We can see here that the wing and tail of the space shuttle are glowing the brightest, indicating that they are the hottest.
Credit: NASA with minor adjustments by wikicommons user Ke4roh credit link

License: PD Public Domain icons