Ad
related to: how much helium for weather balloons for kids
Search results
Results From The WOW.Com Content Network
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.
Helium Tank If you’ve got kids and are in the loop of hosting kids’ parties, you probably know just how valuable a helium tank can be. This helium tank is now $29.99, marked down from $39.99.
"Weather balloons have gone through dozens of upgrades over the past 150 years. Radiosondes that used to weigh a few pounds are now just a few ounces. The balloons and strings are biodegradable.
A rubber or latex balloon filled with either helium or hydrogen lifts the device up through the atmosphere. The maximum altitude to which the balloon ascends is determined by the diameter and thickness of the balloon. Balloon sizes can range from 100 to 3,000 g (3.5 to 105.8 oz).
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.