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  2. craigslist - Wikipedia

    en.wikipedia.org/wiki/Craigslist

    This is an accepted version of this page This is the latest accepted revision, reviewed on 30 January 2025. Classified advertisements website Craigslist Inc. Logo used since 1995 Screenshot of the main page on January 26, 2008 Type of business Private Type of site Classifieds, forums Available in English, French, German, Dutch, Spanish, Italian, Portuguese Founded 1995 ; 30 years ago (1995 ...

  3. eBay - Wikipedia

    en.wikipedia.org/wiki/EBay

    eBay office in Toronto, Canada. eBay Inc. (/ ˈ iː b eɪ / EE-bay, often stylized as ebay or Ebay) is an American multinational e-commerce company based in San Jose, California, that allows users to buy or view items via retail sales through online marketplaces and websites in 190 markets worldwide.

  4. Ellipsograph - Wikipedia

    en.wikipedia.org/wiki/Ellipsograph

    An ellipsograph is a mechanism that generates the shape of an ellipse. One common form of ellipsograph is known as the trammel of Archimedes . [ 1 ] It consists of two shuttles which are confined to perpendicular channels or rails and a rod which is attached to the shuttles by pivots at adjustable positions along the rod.

  5. Elliptical galaxy - Wikipedia

    en.wikipedia.org/wiki/Elliptical_galaxy

    The giant elliptical galaxy ESO 325-4. An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the three main classes of galaxy described by Edwin Hubble in his Hubble sequence and 1936 work The Realm of the Nebulae, [1] along with spiral and lenticular galaxies.

  6. A2 CZ Ellipse Spirit - Wikipedia

    en.wikipedia.org/wiki/A2_CZ_Ellipse_Spirit

    The A2 CZ Ellipse Spirit (sometimes spelled Elipse Spirit) is a Czech ultralight aircraft, designed and produced by A2 CZ. The aircraft was introduced at the Aero show in 2011 and is supplied complete and ready to fly or as a kit for amateur construction .

  7. Orbital eccentricity - Wikipedia

    en.wikipedia.org/wiki/Orbital_eccentricity

    For elliptical orbits, a simple proof shows that ⁡ gives the projection angle of a perfect circle to an ellipse of eccentricity e. For example, to view the eccentricity of the planet Mercury ( e = 0.2056 ), one must simply calculate the inverse sine to find the projection angle of 11.86 degrees.