FACTOID # 29: 73.3% of America's gross operating surplus in motion picture and sound recording industries comes from California.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Weather balloon
Rawinsonde weather balloon just after launch. Notice a parachute in the center of the string and a small instrument box at the end. After release it measures many parameters. These include temperature, relative humidity, pressure, and wind speed. This information is transmitted back to surface observers.
Rawinsonde weather balloon just after launch. Notice a parachute in the center of the string and a small instrument box at the end. After release it measures many parameters. These include temperature, relative humidity, pressure, and wind speed. This information is transmitted back to surface observers.

A weather balloon is a scientific instrument which carries instruments aloft to send back information on atmospheric pressure, temperature, and humidity by means of a small, expendable radio transmitter. To obtain wind data, they can be tracked by radar, radio direction finding, or navigation systems (such as the satellite based Global Positioning System). Download high resolution version (700x1061, 90 KB)Rawinsonde weather balloon just after launch. ... Download high resolution version (700x1061, 90 KB)Rawinsonde weather balloon just after launch. ... diurnal (daily) rhythm of air pressure in northern Germany (black curve is air pressure) Atmospheric pressure is the pressure above any area in the Earths atmosphere caused by the weight of air. ... Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... Humidity is the concentration of water vapor in the air. ... Crystal Palace transmitter, London A transmitter is an electronic device which with the aid of an antenna propagates an electromagnetic signal such as radio, television, or other telecommunications. ... Wind is the quasi-horizontal movement of air (as opposed to an air current) caused by a horizontal pressure gradient force. ... This long range radar antenna (approximately 40m (130ft) in diameter) rotates on a track to observe activities near the horizon. ... A radio direction finder, or RDF, is a device for finding the direction to a radio source. ... A satellite is an object that orbits another object (known as its primary). ... Over fifty GPS satellites such as this NAVSTAR have been launched since 1978. ...


The instrument consists of two basic units, connected by a thin string. The balloon itself produces the lift, and is usually made of a highly flexible latex material. Balloons are often used or given on special occasions, like cards or flowers. ... The LaTeX logo, typeset with LaTeX LATEX is a document preparation system for the TeX typesetting program. ...


The unit that performs the actual measurements and radio transmissions hangs at the lower end of the string, and is called a radiosonde. Specialized radiosondes are used for measuring particular parameters, such as determining the ozone layer. A radiosonde is a unit for use in weather balloons that measures various atmospheric parameters and transmits them to a fixed receiver. ... The ozone layer is that part of the Earths stratosphere which contains relatively high concentrations of ozone (O3). ...


Before launch, the balloon is filled with helium or hydrogen gas. The rate of rise can be controlled by the amount of gas the balloon is filled with. Weather balloons may reach altitudes of 35 km or more, limited by diminishing pressures causing the balloon to expand to such a degree (typically by a 100:1 factor) that it disintegrates. The instrument package is usually lost. Above that altitude sounding rockets may be used. General Name, Symbol, Number helium, He, 2 Chemical series noble gases Group, Period, Block 18, 1, p Appearance colorless Atomic mass 4. ... General Name, Symbol, Number Hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1 (IA), 1, s Density, Hardness 0. ... Gas (actually, as), the GNU assembler, is the default GCC back-end. ... A sounding rocket is an instrument carrying suborbital rocket designed to take measurements and perform scientific experiments during its flight. ...


Major manufacturers of balloons are Totex Corporation and Cosmopren in Japan, and Kaysam in the US. Kaysam Worldwide Inc. ... US,Us or us may stand for the United States of America us, the oblique case form of the English language pronoun we. ...


Compare sounding rocket. A sounding rocket is an instrument carrying suborbital rocket designed to take measurements and perform scientific experiments during its flight. ...


External links


  Results from FactBites:
 
Weather balloon - Wikipedia, the free encyclopedia (361 words)
A weather balloon is a balloon which carries instruments aloft to send back information on atmospheric pressure, temperature, and humidity by means of a small, expendable measuring device called a radiosonde.
The balloon itself produces the lift, and is usually made of a highly flexible latex material.
Weather balloons may reach altitudes of 40 km (25 miles) or more, limited by diminishing pressures causing the balloon to expand to such a degree (typically by a 100:1 factor) that it disintegrates.
AllRefer.com - weather balloon, Meteorological Instrument (Meteorological Instruments) - Encyclopedia (425 words)
weather balloon, balloon used in the measurement and evaluation of mostly upper atmospheric conditions (see atmosphere).
Information may be gathered during the vertical ascent of the balloon through the atmosphere or during its motions once it has reached a predetermined maximum altitude.
A pilot balloon is a small balloon (diameter c.1 m/39 in.) whose ascent is followed visually to obtain data for the computation of the speed and direction of winds at different altitudes.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m