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A weather balloon, also known as a sounding balloon, is a balloon (specifically a type of high-altitude balloon) that carries instruments to the stratosphere to send back information on atmospheric pressure, temperature, humidity and wind speed by means of a small, expendable measuring device called a radiosonde.
An example image from a hobby high-altitude balloon launched by the Make Stuff Club from Kalamazoo College A photo taken from a 1,500 g (3.3 lb) weather balloon at approximately 100,000 ft (19 mi; 30 km) above Oregon A latex weather balloon bursting at about 29.5 km (18.3 mi; 97,000 ft)
On July 2, 1982, Larry Walters (April 19, 1949 – October 6, 1993) made a 45-minute flight in a homemade aerostat made of an ordinary lawn chair and 42 helium-filled weather balloons. [2] The aircraft rose to an altitude of about 16,000 feet (4,900 m), drifted from the point of liftoff in San Pedro, California , and entered controlled airspace ...
how much helium is needed? Enough to fill 600,000 to 700,000 Mylar party balloons. But the parade helium is 99.999 percent pure, whereas the stuff in a party balloon might be only 97.5 percent pure.
Synchronized weather balloon launches have helped meteorologists create forecasts over the past 150 years, and now the old tradition is going high tech. Twice a day - every day of the year ...
The enclosed helium atoms escape through small pores in the latex which are larger than the helium atoms. However, some types of balloons are labelled "helium-grade". These balloons are often thicker and have less porosity. [3] Balloons filled with air usually hold their size and shape much longer, sometimes for up to a week.
A Skyhook balloon launched in 1957 to photograph the Sun. Skyhook balloons were high-altitude balloons developed by Otto C. Winzen and General Mills, Inc.They were used by the United States Navy Office of Naval Research (ONR) in the late 1940s and 1950s for atmospheric research, especially for constant-level meteorological observations at very high altitudes.
Research balloons are balloons that are used for scientific research. They are usually unmanned, filled with a lighter-than-air gas like helium, and fly at high altitudes. Meteorology, atmospheric research, astronomy, and military research may be conducted from a research balloon. Weather balloons are a type of research balloon. Research ...