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  2. Kite experiment - Wikipedia

    en.wikipedia.org/wiki/Kite_experiment

    The kite experiment is a scientific experiment in which a kite with a pointed conductive wire attached to its apex is flown near thunder clouds to collect static electricity from the air and conduct it down the wet kite string to the ground. The experiment was first proposed in 1752 by Benjamin Franklin, who reportedly conducted the experiment ...

  3. Sky lantern - Wikipedia

    en.wikipedia.org/wiki/Sky_lantern

    Sky lantern. A sky lantern (traditional Chinese: 天燈; simplified Chinese: 天灯; pinyin: tiāndēng), also known as Kǒngmíng lantern (traditional Chinese: 孔明燈; simplified Chinese: 孔明灯), or Chinese lantern, is a small balloon made of paper, with an opening at the bottom where a small fire is suspended. Sky lanterns have been ...

  4. Electric spark - Wikipedia

    en.wikipedia.org/wiki/Electric_spark

    An electric spark is an abrupt electrical discharge that occurs when a sufficiently high electric field creates an ionized, electrically conductive channel through a normally-insulating medium, often air or other gases or gas mixtures. Michael Faraday described this phenomenon as "the beautiful flash of light attending the discharge of common ...

  5. Light-emitting diode physics - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode_physics

    Light-emitting diode physics. Light-emitting diodes (LEDs) produce light (or infrared radiation) by the recombination of electrons and electron holes in a semiconductor, a process called "electroluminescence". The wavelength of the light produced depends on the energy band gap of the semiconductors used.

  6. Penrose tiling - Wikipedia

    en.wikipedia.org/wiki/Penrose_tiling

    The kite is a quadrilateral whose four interior angles are 72, 72, 72, and 144 degrees. The kite may be bisected along its axis of symmetry to form a pair of acute Robinson triangles (with angles of 36, 72 and 72 degrees). The dart is a non-convex quadrilateral whose four interior angles are 36, 72, 36, and 216 degrees. The dart may be bisected ...

  7. Kite applications - Wikipedia

    en.wikipedia.org/wiki/Kite_applications

    A quad-line traction kite, commonly used as a power source for kite surfing. Application: sport, recreation, exercise, rest, product demonstration. Long-distance travel across the land, [6] ice, and sea started centuries ago, but today significant tasks of moving people and goods from point A to point B are occurring; this is so in part from ...

  8. Man-lifting kite - Wikipedia

    en.wikipedia.org/wiki/Man-lifting_kite

    A man-lifting kite is a kite designed to lift a person from the ground. Historically, man-lifting kites have been used chiefly for reconnaissance. Interest in their development declined with the advent of powered flight at the beginning of the 20th century. Recreational man-lifting kites gradually gained popularity through the latter half of ...

  9. Plaything or peril? Brazilian kites are endangering lives and ...

    www.aol.com/news/plaything-peril-brazilian-kites...

    Brazilian kites are endangering lives and prompting a push for a national ban. ELÉONORE HUGHES. August 21, 2024 at 12:26 AM. RIO DE JANEIRO (AP) — Two groups of men stood on opposite rooftops ...