🇯🇵Japanese Source WordCode: JA

光学望遠鏡

Pronunciation / Transliteration: kōgaku bōenkō

🇬🇧 Direct English Meaning:
Optical Telescope/ˈɒp.tɪ.kəl ˈtɛl.ɪ.skəʊp/
nounCEFR B2 (Upper)Top #8500 frequency
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🇯🇵 Example Sentence in Japanese:

"天文学者は光学望遠鏡を使って星を観察する。"

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    An instrument that gathers and focuses light, primarily in the visible light part of the spectrum, to create a magnified image of distant objects.

    "Astronomers used the large optical telescope to observe distant galaxies and nebulae."
  2. 2

    A device utilizing lenses and/or mirrors designed specifically for celestial or terrestrial observation using visible electromagnetic radiation.

    "Amateur astronomers often begin their hobby with a small, portable optical telescope."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term combines 'optical', derived from the Ancient Greek 'optikos' relating to vision and optics, and 'telescope', coined in 1611 by Greek mathematician Giovanni Demisiani from the Greek 'tele' (far) and 'skopein' (to look or see). Together, the phrase emerged during the scientific revolution to distinguish light-gathering astronomical instruments from other types of detectors.

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