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  2. Umbra, penumbra and antumbra - Wikipedia

    en.wikipedia.org/wiki/Umbra,_penumbra_and_antumbra

    The Earth’s shadow has two distinct parts,… the UMBRA is the part of the shadow where all direct sunlight is blocked by the Earth; the PENUMBRA of the shadow is where the Earth only blocks some of the sunlight.” Umbra (A) and penumbra (B)

  3. Sun and Shadow (short story) - Wikipedia

    en.wikipedia.org/wiki/Sun_and_Shadow_(short_story)

    "Sun and Shadow" is a short story by Ray Bradbury first published in 1953 in the American news magazine The Reporter. Later that same year, Bradbury anthologized it in The Golden Apples of the Sun . In 1957, Quenian Press published a limited edition of 90 copies of the story for members of the Roxburghe Club of San Francisco.

  4. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.

  5. List of words having different meanings in American and ...

    en.wikipedia.org/wiki/List_of_words_having...

    For the second portion of the list, see List of words having different meanings in American and British English: M–Z. Asterisked (*) meanings, though found chiefly in the specified region, also have some currency in the other region; other definitions may be recognised by the other as Briticisms or Americanisms respectively. Additional usage ...

  6. Syzygy (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Syzygy_(astronomy)

    The word is often used in reference to the Sun, Earth, and either the Moon or a planet, where the latter is in conjunction or opposition. Solar and lunar eclipses occur at times of syzygy, as do transits and occultations. The term is often applied when the Sun and Moon are in conjunction or in opposition . [4]

  7. List of forms of word play - Wikipedia

    en.wikipedia.org/wiki/List_of_forms_of_word_play

    Malapropism: incorrect usage of a word by substituting a similar-sounding word with different meaning; Neologism: creating new words Phono-semantic matching: camouflaged/pun borrowing in which a foreign word is matched with a phonetically and semantically similar pre-existent native word (related to folk etymology) Portmanteau: a new word that ...

  8. List of sundial mottos - Wikipedia

    en.wikipedia.org/wiki/List_of_sundial_mottos

    The clouds shall pass and the sun will shine on us once more. Let others tell of storms and showers, I tell of sunny morning hours. Let others tell of storms and showers, I'll only count your sunny hours. Has date of 1767; Life is but a shadow: the shadow of a bird on the wing. Self-dependent power can time defy, as rocks resist the billows and ...

  9. Thesaurus - Wikipedia

    en.wikipedia.org/wiki/Thesaurus

    Thesaurus Linguae Latinae. A modern english thesaurus. A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms ...