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  2. Juggling - Wikipedia

    en.wikipedia.org/wiki/Juggling

    Claude Shannon, builder of the first juggling robot, developed a juggling theorem, relating the time balls spend in the air and in the hands: (F+D)H=(V+D)N, where F = time a ball spends in the air, D = time a ball spends in a hand/time a hand is full, V = time a hand is vacant, N = number of balls, and H = number of hands. [10]

  3. 5 ways people stayed cool before air conditioning was invented

    www.aol.com/weather/5-ways-people-stayed-cool...

    Science & Tech. Sports. Weather. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. ... Because hot air rises, some buildings were built with high ceilings. The hot ...

  4. History of juggling - Wikipedia

    en.wikipedia.org/wiki/History_of_juggling

    The Tractate Sukkah of the Talmud says that Rabbi Shimon ben Gamliel (10 BC to 70 AD) could “take eight fire torches and throw them in the air and catch one and throw one and they did not touch one another.” [21] Another mention of torch juggling from around the third century AD appears in the letters of Alciphron, where an incident is ...

  5. History of ballooning - Wikipedia

    en.wikipedia.org/wiki/History_of_ballooning

    The first modern-day hot air balloon to be built in the United Kingdom (UK) was the Bristol Belle in 1967. Today, hot air balloons are used primarily for recreation, and there are some 7,500 hot air balloons operating in the United States. [51] The first tethered balloon in modern times was made in France at Chantilly Castle in 1994 by ...

  6. Ed Yost - Wikipedia

    en.wikipedia.org/wiki/Ed_Yost

    Paul Edward Yost (June 30, 1919 – May 27, 2007) was the American inventor of the modern hot air balloon and is referred to as the "Father of the Modern Day Hot-Air Balloon." [ 1 ] He worked for a high-altitude research division of General Mills in the early 1950s until he left to establish Raven Industries in 1956, along with several ...

  7. Montgolfier brothers - Wikipedia

    en.wikipedia.org/wiki/Montgolfier_brothers

    The Montgolfier brothers – Joseph-Michel Montgolfier (French: [ʒozɛf miʃɛl mɔ̃ɡɔlfje]; 26 August 1740 – 26 June 1810) [1] and Jacques-Étienne Montgolfier ([ʒak etjɛn mɔ̃ɡɔlfje]; 6 January 1745 – 2 August 1799) [1] – were aviation pioneers, balloonists and paper manufacturers from the commune Annonay in Ardèche, France.

  8. History of aviation - Wikipedia

    en.wikipedia.org/wiki/History_of_aviation

    Since ancient times, the Chinese understood that hot air rises and applied the principle to a type of small hot air balloon called a sky lantern. A sky lantern consists of a paper balloon under or just inside which a small lamp is placed. Sky lanterns are traditionally launched for recreation and during festivals.

  9. Outrageous Acts of Science - Wikipedia

    en.wikipedia.org/wiki/Outrageous_Acts_of_Science

    Outrageous Acts of Science is a science program shown on Science Channel in the United States, featuring a fast-paced countdown of the top 20 internet videos in each episode. The series first aired in the United Kingdom on Discovery International with the title You Have Been Warned .