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Umbra & penumbra
The penumbra is that part of the shadow where the light source is only partially blocked. Part of the light passes through the edges of the object causing a partial shadow. The penumbra (Latin for almost-shadow) is the portion of a shadow that results from the source of illumination being only partially blocked. Penumbras occur only when the source of light is not a point-source. As the sun is a visible disc, solar shadows have penumbras. The penumbra part of a shadow is contrasted with the umbra part of the shadow in which the light source is completely blocked. Wikipedia does not have an article with this exact name. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Image File history File links Umbra & penumbra. ... Image File history File links Umbra & penumbra. ... Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... Shadows on a pavement A shadow is a region of darkness where light is blocked. ... Lighting refers to either artificial light sources such as lamps or to natural illumination of interiors from daylight. ... The Sun is the star at the center of our solar system. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...
The part of the penumbra where an annular eclipse is visible is called the antumbra. For Solar Eclipse, the alien friend of the rubber doll Betty Spaghetty, see Betty Spaghetty Photo taken by John Walker during the Zambia 2001 eclipse A solar eclipse occurs when the Sun, Moon and Earth are on a single line with the Moon in the middle. ... The text or formatting below is generated by a template which has been proposed for deletion. ...
Also, the penumbra is the lighter, fuzzier outer edge of a shadow. The shadow is darkest at the umbra, near the object, and weakest at the penumbra, at the edge.
Other meanings
The penumbra is also the ring-shaped semi-bright region of a sunspot that surrounds the darker umbra.
An area in which something exists to a lesser or uncertain degree: "The first nine amendments to the Bill of Rights have a penumbra where privacy is protected from governmental intrusion.” - Griswold v. Connecticut, U.S. Supreme Court
There is a cycle of cards in the game Magic: The Gathering that creates a shadow-like token of itself upon death.
Penumbra is a free horror adventure game by Frictional Games.
The ischemic penumbra is the zone around an ischemic brain infarct which receives some degree of collateral circulation.
Penumbra or Umbra was probably the start of the names "Umbris" and "Panumbris" in the MMORPG Asheron's Call.
A sunspot is a region on the Suns surface (photosphere) that is marked by a lower temperature than its surroundings and intense magnetic activity, which inhibits convection, forming areas of low surface temperature. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Categories: Stub | World of Darkness | Werewolf: The Apocalypse | Mage: The Ascension ... This articles content is specific to the fictional setting known as the World of Darkness. ... This article does not cite its references or sources. ... The World of Darkness is the name given to two distinct fictional universes developed by White Wolf Game Studio. ... A role-playing game (RPG) is a type of game in which players assume the roles of characters and collaboratively create narratives. ... Penumbra is an episode from the seventh season of Star Trek: Deep Space Nine, the first of the ten final chapters. ... Space station Star Trek: Deep Space Nine (ST:DS9 or STDS9 or DS9 for short) is a science fiction television series produced by Paramount and set in the Star Trek universe. ... Magic: The Gathering (colloq. ... Penumbra is a horror adventure game, developed by a small team of students as a technology project. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... The Longest Journey is a 1999 point-and-click adventure game by Norwegian studio Funcom. ...
Connecticut, in which the Court held that criminal prohibition of contraceptive devices for married couples violated the privacy rights of the married couple.
Privacy was found in what the Court called the "penumbras," or shadowy edges, of certain amendments that arguably refer to certain privacy rights, such as the First, Fourth ("the right of the people to be secure in their persons, houses, papers, and effects"), and the Ninth Amendments.
Although it has never been the majority view, the Ninth Amendment could as easily be used as the source of fundamental rights, like privacy, holding as it does, that: "The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people."
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