Telescope | History, Types, & Facts | Britannica
2024年10月12日 · Telescope, device used to form magnified images of distant objects. The telescope is undoubtedly the most important investigative tool in astronomy. It provides a …
Telescope - Reflecting, Astronomy, Optics | Britannica
2024年10月12日 · Telescope - Reflecting, Astronomy, Optics: Reflectors are used not only to examine the visible region of the electromagnetic spectrum but also to explore both the shorter …
Telescope - Optics, Astronomy, Instrumentation | Britannica
2024年10月12日 · Telescope - Optics, Astronomy, Instrumentation: Galileo is credited with having developed telescopes for astronomical observation in 1609. While the largest of his …
telescope - Students | Britannica Kids | Homework Help
The first and most familiar type, however, is the optical telescope, which provides a detailed, magnified image using light in the visible part of the spectrum. Telescopes, sometimes used in …
Optics | History, Applications, & Facts | Britannica
2024年10月4日 · All of the world’s largest telescopes and many small ones are of the reflecting type. Such telescopes use a concave mirror to produce the main image, a small secondary …
Telescope - Light Gathering, Resolution | Britannica
2024年10月12日 · Telescope - Light Gathering, Resolution: The most important of all the powers of an optical telescope is its light-gathering power. This capacity is strictly a function of the …
Telescope - Schmidt, Optics, Astronomy | Britannica
2024年10月12日 · A catadioptric telescope design incorporates the best features of both the refractor and the reflector—i.e., it has both reflective and refractive optics. The Schmidt …
Hubble Space Telescope (HST) | History, Discoveries, & Facts
4 天之前 · Hubble Space Telescope, the first sophisticated optical observatory placed into Earth’s orbit. Some of its many triumphs included the Hubble Deep Field, a photograph of about 1,500 …
telescope summary | Britannica
telescope, Device that collects light from and magnifies images of distant objects, undoubtedly the most important investigative tool in astronomy. The first telescopes focused visible light by …
Radio telescope | Images, Definition, & Facts | Britannica
Radio telescope, astronomical instrument consisting of a radio receiver and an antenna system that is used to detect radio-frequency radiation between wavelengths of about 10 meters (30 …