Pressure to powerpoint
Published on: Mar 4, 2016
Transcripts - Pressure to powerpoint
What is atmospheric pressure? The pressure exerted by the weight of the atmosphere. At sea level this pressure has a mean value of 101,325 Pascals (roughly 14.6959 pounds per square inch). Atmospheric pressure may be measured using a barometer.
What is a barometer? A barometer is a device used for measuring atmospheric or barometric pressure. The pressure acts on the basin containing liquid driving the mercury levels in the tube up or down. Evangelista Torricelli, an Italian physicist, developed the first mercury barometer in 1643.
Cox’s timepiece James Cox working with John Joseph Merlin developed a timepiece running on changing barometric pressure in the 1760s. A mercury barometer was used to power this device. James Cox was an entrepreneur and a goldsmith.
Aneroid Barometers Aneroid barometers were invented by French scientist Lucien Viddie in 1843. An aneroid barometer is another form of barometer that functions without using liquids. Aneroid barometers use a small sealed cell composed of beryllium and copper to measure changing pressure.
More about atmospheric pressure Changing atmospheric pressures are responsible for our winds and weather patterns. Elevation and uneven temperatures affect pressure levels. Areas of high pressure will flow to areas of low pressure.
Cold Energy, LLC In 2004 Cold Energy, LLC obtained a patent for a device deriving its power from differing atmospheric pressures in geographically spaced locations. The idea involves running a pipeline from an area of relatively high pressure to an area of relatively low pressure allowing air to flow through this pipeline. These winds are capable of generating 1,000 to 1,400 Megawatts of electricity. This is enough to power to 250,000 5 Kilowatt homes.
Conclusion Barometric pressure is a viable and clean source of renewable energy.