Glossary term: 光學
Description: 光學是研究光及其與物質相互作用的科學，也包括利用光與物質相互作用一般原理製造光學儀器的科學。在天文學中，望遠鏡或儀器的 "光學 "是指那些將光引向探測器的部件，特別是與可見光有關的鏡子、透鏡、掩膜、狹縫或波導，以及產生光譜的色散元件，如稜鏡和光柵。主動光學是指通過主動機械元件（"致動器"）使鏡面保持正確形狀的科學，而自適應光學則是一種系統，通過這種系統，鏡面可以快速變形，以正確的方式抵消大氣干擾（恆星的 "閃爍"）。“光學 "這一形容詞也用於指使用可見光的天文學。
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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
This is an automated transliteration of the simplified Chinese translation of this term
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Light Dispersion by a Triangular Prism
Caption: This photograph shows a prism splitting a beam of white light into its component colors — a beautiful demonstration of optics, the branch of physics that studies how light behaves and interacts with materials. When white light enters the prism, different wavelengths (colors) bend by different amounts because of a process called refraction. This separation of colors produces a spectrum — similar to a rainbow — revealing that white light is actually made up of many colors combined going from blue, through green and yellow to red.
Understanding optics helps scientists and engineers design lenses, microscopes, telescopes, cameras, and many other tools that shape and control light for practical use. The way the prism disperses light into a spectrum is the same principle that makes rainbows form in the sky when sunlight passes through raindrops.
Credit: Kelvinsong
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Related Activities
How do telescopes work?
astroEDU educational activity (links to astroEDU website) Description: Let's discover telescopes and experiment simple optics
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
Age Ranges:
10-12
Education Level:
Primary
Areas of Learning:
Guided-discovery learning
, Historical focussed activity
, Observation based
Costs:
Medium Cost
Duration:
1 hour
Group Size:
Group
Skills:
Asking questions
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