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  2. File:Diagram of umbra, penumbra & antumbra.png - Wikipedia

    en.wikipedia.org/wiki/File:Diagram_of_umbra...

    Original file (1,000 × 600 pixels, file size: 97 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  3. File:Umbra01.svg - Wikipedia

    en.wikipedia.org/wiki/File:Umbra01.svg

    2007-03-08 05:31 DanMS 499×275×0 (10073 bytes) {{Information | Description = Diagram showing the umbra and penumbra of the shadow of the earth in sunlight. This is an SVG replacement for the PNG file [[:Image:Umbra01.gif]]. | Source = Original artwork by Daniel M. Short | Date = March 7, 2

  4. File:Solar eclipse size of penumbra.svg - Wikipedia

    en.wikipedia.org/wiki/File:Solar_eclipse_size_of...

    English: This diagram explains why the penumbra of a solar eclipse is approximately twice the size of the Moon. Since the Sun and Moon have nearly the same angular diameter, the umbra is reduced to nearly a single point in length. Therefore the three angles marked in red are nearly equal, all with a base equal to the Moon's diameter.

  5. What is an umbra? A penumbra? Here's some terms to know ... - AOL

    www.aol.com/umbra-penumbra-heres-terms-know...

    The moon’s penumbra causes partial solar eclipses. The super blood moon lunar eclipse occurred late in the night of Sunday, Jan. 20, 2019, and carried over into early morning Monday.

  6. Umbra, penumbra and antumbra - Wikipedia

    en.wikipedia.org/wiki/Umbra,_penumbra_and_antumbra

    Umbra, penumbra and antumbra of Earth and images that could be seen at some points in these areas (Note: the relative size and distance of the bodies shown are not to scale.)“… 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 ...

  7. File:Earth umbral cone (partial).png - Wikipedia

    en.wikipedia.org/wiki/File:Earth_umbral_cone...

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  8. pngcrush - Wikipedia

    en.wikipedia.org/wiki/Pngcrush

    The main purpose of pngcrush is to reduce the size of the PNG IDAT data stream by trying various combinations of compression methods and delta filters. It can also be used for various manipulations of PNG images, such as changing the bit depth , removing unwanted ancillary chunks , or adding certain chunks including gAMA, tRNS, iCCP, and ...

  9. Shadow - Wikipedia

    en.wikipedia.org/wiki/Shadow

    Umbra, penumbra and antumbra. A point source of light casts only a simple shadow, called an "umbra". For a non-point or "extended" source of light, the shadow is divided into the umbra, penumbra, and antumbra. The wider the light source, the more blurred the shadow becomes. If two penumbras overlap, the shadows appear to attract and merge.