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  2. Columbia Scientific Balloon Facility - Wikipedia

    en.wikipedia.org/wiki/Columbia_Scientific...

    Ultra long duration balloons (ULDB) are being developed which can operate at float for +100 days. The limiting factor is the diurnal cycle of the sun, rising and setting. Heat during the day causes the balloon to expand and gain altitude, thereby losing helium. Heat loss at night causes the balloon to sink and contract.

  3. List of inflatable manufactured goods - Wikipedia

    en.wikipedia.org/wiki/List_of_inflatable...

    An inflatable laser maze. This is a non-comprehensive list of inflatable manufactured goods, as no such list could ever completely contain all items that regularly change.An inflatable [1] is an object that can typically be inflated with a gas, including air, hydrogen, helium and nitrogen.

  4. Cluster ballooning - Wikipedia

    en.wikipedia.org/wiki/Cluster_ballooning

    Cluster ballooning is an extreme sport and a form of ballooning where a harness attaches a balloonist to a cluster of helium-inflated rubber balloons. Unlike traditional hot-air balloons , where a single large balloon is equipped with vents enabling altitude control, cluster balloons are multiple, small, readily available and individually ...

  5. Lifting gas - Wikipedia

    en.wikipedia.org/wiki/Lifting_gas

    In a theoretically perfect situation with weightless spheres, a "vacuum balloon" would have 7% more net lifting force than a hydrogen-filled balloon, and 16% more net lifting force than a helium-filled one. However, because the walls of the balloon must remain rigid without imploding, the balloon is impractical to construct with any known material.

  6. Gas balloon - Wikipedia

    en.wikipedia.org/wiki/Gas_balloon

    A gas balloon is a balloon that rises and floats in the air because it is filled with a gas lighter than air (such as helium or hydrogen). When not in flight, it is tethered to prevent it from flying away and is sealed at the bottom to prevent the escape of gas. A gas balloon may also be called a Charlière for its inventor, the Frenchman ...

  7. Ceiling balloon - Wikipedia

    en.wikipedia.org/wiki/Ceiling_balloon

    On the opposite side of the cabinet is space to store balloons, string and pibal lights. The gas used to fill the balloon is helium or hydrogen. Because of its low cost ceiling balloons are often filled with hydrogen gas, but sometimes helium is used. The balloon is attached to the inflation nozzle and a piece of string is wound around the neck.

  8. Today’s NYT ‘Strands’ Hints, Spangram and Answers for Monday ...

    www.aol.com/today-nyt-strands-hints-spangram...

    Find theme words to fill the board. Theme words stay highlighted in blue when found. Drag or tap letters to create words. If tapping, double tap the last letter to submit.

  9. Stratobowl - Wikipedia

    en.wikipedia.org/wiki/Stratobowl

    In the 1950s, Project Manhigh [10] and Project Strato-Lab launches were made from the man-made crater of an iron mining pit near Crosby, Minnesota, and, if weather allowed, from Fleming Field in South St. Paul, Minnesota. [11] The Stratobowl was a backup location. There was one Stratobowl launch in 1956, three in 1958, and seven in 1959.

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