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searching for Density of air 85 found (121 total)

Kosmos 348 (297 words) [view diff] exact match in snippet view article find links to article

was built by the Yuzhnoye Design Bureau, and was used to study the density of air in the upper atmosphere, and investigate aurorae. A Kosmos-2I 63SM carrier

Control area (aviation) (342 words) [view diff] exact match in snippet view article

this control area. Control areas are established in any areas when the density of air traffic is high: An airway is a case of a "control area or portion of

Neon (3,847 words) [view diff] exact match in snippet view article find links to article

monatomic gas under standard conditions, with approximately two-thirds the density of air. Neon was discovered in 1898 alongside krypton and xenon, identified

Carbon nanofoam (892 words) [view diff] exact match in snippet view article find links to article

density of previously produced carbon aerogels—or only a few times the density of air at sea level. Unlike carbon aerogels, carbon nanofoam is a poor electrical

Forced induction (560 words) [view diff] exact match in snippet view article find links to article

the air pressure is higher than the surrounding atmosphere. Since the density of air increases with pressure, this allows a greater mass of air to enter

Dobson unit (1,028 words) [view diff] exact match in snippet view article find links to article

(8.314 J/(mol·K)), and T is temperature in kelvins (K). The number density of air is the number of molecules or atoms per unit volume: n air = A a v n

Turbocharger (3,473 words) [view diff] exact match in snippet view article find links to article

the power loss experienced by aircraft engines due to the decreased density of air at high altitudes. However, the prototype was not reliable and did not

Angle of attack (1,407 words) [view diff] exact match in snippet view article find links to article

slight maneuvering may require high angles of attack due to the low density of air in the upper atmosphere as well as at low speed at low altitude where

Air mass (1,596 words) [view diff] exact match in snippet view article find links to article

west to east, while warm fronts move poleward. Because of the greater density of air in their wake, cold fronts and cold occlusions move faster than warm

Ermenonville (555 words) [view diff] case mismatch in snippet view article find links to article

proximity to Charles de Gaulle Airport causes it to have the highest-density of Air France employees among French communes. France portal Communes of the

Liquid water path (478 words) [view diff] exact match in snippet view article find links to article

_{air}r_{L}dz'} where rL is the liquid water mixing ratio and ρair is the density of air (including water loading). The atmosphere is in approximate hydrostatic

H1821+643 (567 words) [view diff] exact match in snippet view article find links to article

average density would be 18 g/m3, ∼ 1 % {\displaystyle \sim 1\%} the density of air at sea level on Earth. Mass 3.0×1010 * 2.0×1030=6.0×1040 kg. Volume

Physics (8,846 words) [view diff] exact match in snippet view article find links to article

depends inversely on the density object it is falling through (e.g. density of air). He also stated that, when it comes to violent motion (motion of an

Space diving (1,382 words) [view diff] exact match in snippet view article find links to article

considerably less than that of reentering from orbit. At any given density of air, the terminal velocity of a person is much lower than that of a heavy

Geophysical fluid dynamics (1,066 words) [view diff] exact match in snippet view article find links to article

troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The density of air is mainly determined by temperature and water vapor content, the density

Sound intensity (1,604 words) [view diff] exact match in snippet view article find links to article

{\displaystyle k} is the wave number, ρ {\displaystyle \rho } is the density of air, c {\displaystyle c} is the speed of sound and Δ r {\displaystyle \Delta

Isopycnal (543 words) [view diff] exact match in snippet view article find links to article

varying degrees of humidity, temperature, and pressure change the density of air. Isopycnals are not used in meteorology as frequently as they are in

Forces on sails (8,303 words) [view diff] exact match in snippet view article find links to article

mathematical models address lift and drag by taking into account the density of air, coefficients of lift and drag that result from the shape and area of

Scale analysis (mathematics) (1,379 words) [view diff] exact match in snippet view article

of the Earth, g is gravitational acceleration, φ is latitude, ρ is density of air and ν is kinematic viscosity of air (we can neglect turbulence in free

Synoptic scale meteorology (1,658 words) [view diff] exact match in snippet view article find links to article

west to east, while warm fronts move poleward. Because of the greater density of air in their wake, cold fronts and cold occlusions move faster than warm

Cyclone (5,168 words) [view diff] case mismatch in snippet view article find links to article

1175/1520-0493(1989)117<1237:AMCCGI>2.0.CO;2. Glenn Elert (2006). "Density of Air". The Physics Factbook. Archived from the original on 2010-01-02. Retrieved

Sun (18,256 words) [view diff] exact match in snippet view article find links to article

700 K (9,800 °F) and the density to only 0.2 g/m3 (about 1/10,000 the density of air at sea level, and 1 millionth that of the inner layer of the convective

Runway (5,473 words) [view diff] exact match in snippet view article find links to article

at a higher altitude must do so at reduced weight due to decreased density of air at higher altitudes, which reduces engine power and wing lift. An aircraft

Orders of magnitude (pressure) (2,637 words) [view diff] exact match in snippet view article

HYDRA Project. Retrieved 3 January 2012. Exact calculation: P = 1/2 * density of air * (wind speed)^2. wind speed = 9 mph * 0.447 (m/s)/mph = 4.02 m/s. P

Optical depth (1,598 words) [view diff] exact match in snippet view article find links to article

equations: ka is the absorption coefficient w1 is the mixing ratio ρ0 is the density of air at sea level H is the scale height of the atmosphere z is the height

Speed of sound (7,952 words) [view diff] exact match in snippet view article find links to article

properties of air Celsius temperature θ [°C] Speed of sound c [m/s] Density of air ρ [kg/m3] Characteristic specific acoustic impedance z0 [Pa⋅s/m] 35

Wing loading (2,201 words) [view diff] exact match in snippet view article find links to article

{\displaystyle L={\tfrac {1}{2}}\rho v^{2}AC_{L},} where ρ is the density of air, and CL is the lift coefficient. The lift coefficient is a dimensionless

Hydrogen (12,415 words) [view diff] exact match in snippet view article find links to article

superconductivity studies. Buoyant lifting: Because H2 is only 7% the density of air, it was once widely used as a lifting gas in balloons and airships.

Mound-building termites (1,564 words) [view diff] exact match in snippet view article find links to article

and gases exchange with the atmosphere through the porous walls. The density of air near the surface rises due to heat exchange and is forced below the

Anaximenes of Miletus (3,165 words) [view diff] exact match in snippet view article find links to article

proposed that each substance is created by condensation to increase the density of air or by rarefaction to decrease it. The rarefaction process described

Propane (5,436 words) [view diff] exact match in snippet view article find links to article

density of propane gas at 25 °C (77 °F) is 1.808 kg/m3, about 1.5× the density of air at the same temperature. The density of liquid propane at 25 °C (77 °F)

Blaise Pascal (7,395 words) [view diff] exact match in snippet view article find links to article

949 m. Mercury density is 13.534 g/cm3. So by Pascal's numbers, the density of air is about 1.1 kg/m^3. Adamson, Donald. Blaise Pascal: Mathematician,

Weighing scale (5,299 words) [view diff] exact match in snippet view article find links to article

directly proportional to the volume of air displaced. The difference in density of air due to barometric pressure and temperature creates errors. Error in

APEC blue (1,737 words) [view diff] exact match in snippet view article find links to article

was at the lowest level over the same period in the past 5 years. The density of air contaminants in Beijing during November 1 to 12, 2014 However, hours

Lifting gas (2,670 words) [view diff] exact match in snippet view article find links to article

250 °F (121 °C). Hydrogen, being the lightest existing gas (7% the density of air, 0.08988 g/L at STP), seems to be the most appropriate gas for lifting

Tropical cyclone (21,047 words) [view diff] exact match in snippet view article find links to article

\int _{Vol}{\frac {1}{2}}pu^{2}d_{v}\,} where p {\textstyle p} is the density of air, u {\textstyle u} is a sustained surface wind speed value, and d v {\textstyle

Cyclogenesis (2,892 words) [view diff] case mismatch in snippet view article find links to article

Complex-Generated Inertially Stable Warm Core Vortex Chu, Rachel (2006). "Density of Air". The Physics Factbook. St. Louis University What is a trowal? Archived

Anthropogenic cloud (1,947 words) [view diff] exact match in snippet view article find links to article

approximation of air stability. In some cases, when there is a large density of air traffic, these high homogenitus may inhibit the formation of natural

Allotropes of carbon (5,635 words) [view diff] exact match in snippet view article find links to article

density of previously produced carbon aerogels – only a few times the density of air at sea level. Unlike carbon aerogels, carbon nanofoam is a poor electrical

Malcolm Dole (456 words) [view diff] exact match in snippet view article find links to article

.4..268D. doi:10.1063/1.1749834. Morita, N. (1935). "The increased density of air oxygen relative to water oxygen". J. Chem. Soc. Japan. 56: 1291. Bender

Bollard pull (1,459 words) [view diff] exact match in snippet view article find links to article

_{w}} is the density of water ρ a {\displaystyle \rho _{a}} is the density of air V w {\displaystyle V_{w}} is the velocity of (relative to) water V a

Brix (3,012 words) [view diff] exact match in snippet view article find links to article

expected as the NBS and the ASBC used slightly different values for the density of air and pure water in their calculations for converting to apparent specific

Orbital emphysema (3,098 words) [view diff] exact match in snippet view article find links to article

without deterioration of vision, which the severity depends on the density of air trapped under the orbital soft tissue spaces. It is most commonly result

Eucalyptus cladocalyx (1,397 words) [view diff] exact match in snippet view article find links to article

colour and has fine uniform texture with an interlocked grain. The density of air-dried wood is around 1,105 kg/m3 (1,863 lb/cu yd) and is moderately

Avempace (5,949 words) [view diff] exact match in snippet view article find links to article

its motion in air is as the proportion of the density of water to the density of air, except on the assumption that the motion of the stone takes time only

Wingtip vortices (2,651 words) [view diff] exact match in snippet view article find links to article

air[citation needed]. After NASA became concerned about the increasing density of air traffic potentially causing vortex related accidents at airports, an

Reusable launch vehicle (5,088 words) [view diff] exact match in snippet view article find links to article

density of the first stage (without propellant) is less than the bulk density of air. Upon returning from flight, such a first stage remains floating in

Acoustic impedance (3,233 words) [view diff] exact match in snippet view article find links to article

properties of air Celsius temperature θ [°C] Speed of sound c [m/s] Density of air ρ [kg/m3] Characteristic specific acoustic impedance z0 [Pa⋅s/m] 35

Aerogel (8,107 words) [view diff] exact match in snippet view article find links to article

which is the evacuated version of the record-aerogel of 1,900 g/m3. The density of air is 1,200 g/m3 (at 20 °C and 1 atm). The silica solidifies into three-dimensional

Bedford Level experiment (1,926 words) [view diff] exact match in snippet view article find links to article

can produce the results noted by Rowbotham and Blount. Because the density of air in the Earth's atmosphere decreases with height above the Earth's surface

Penman equation (816 words) [view diff] exact match in snippet view article find links to article

saturation vapor pressure curve (Pa K−1) Rn = Net irradiance (W m−2) ρa = density of air (kg m−3) cp = heat capacity of air (J kg−1 K−1) δe = vapor pressure

Frontier (supercomputer) (1,001 words) [view diff] exact match in snippet view article

non-pre chilled water through the system each minute, allowing 5x the density of air-cooled architectures. Each node consists of one CPU, 4 GPUs and 4 terabytes

Moisture advection (401 words) [view diff] exact match in snippet view article find links to article

{\frac {\mathbf {f} }{g}}\,dp\,} where ρ {\displaystyle \rho } is the density of air, and P is pressure at the ground surface. For the far right definition

ITER (15,007 words) [view diff] exact match in snippet view article find links to article

density environment, which is about one million times lower than the density of air. ITER will use deuterium-tritium fuel. While deuterium is abundant in

Aristotelian physics (6,445 words) [view diff] exact match in snippet view article find links to article

volume of compressed air, Galileo showed that this overestimates the density of air by a factor of forty. From his experiments with inclined planes, he

Metallic microlattice (1,138 words) [view diff] exact match in snippet view article find links to article

approximately 2.1 mg/cm3 (2.1 kg/m3), which is only about 1.76 times the density of air itself at 25 °C. The material is described as being 100 times lighter

Atkinson resistance (1,301 words) [view diff] exact match in snippet view article find links to article

Atkinson's time not only were all British mines shallow enough that the density of air could be considered constant, but fan design was primitive enough that

Buoyancy compensator (aviation) (1,189 words) [view diff] exact match in snippet view article

buoyancy: buoyancy compensation. Changes in air temperature (and thus the density of air) Changes in lifting gas temperature (for example, the heating of the

Blower door (4,562 words) [view diff] exact match in snippet view article find links to article

for lb/ft3) ρ A c t u a l {\displaystyle \rho _{Actual}\,\!} = Actual density of air going through the fan ρ I n {\displaystyle \rho _{In}\,\!} for depressurization

Absolute threshold of hearing (2,760 words) [view diff] exact match in snippet view article find links to article

p 2 ρ v {\displaystyle I={\frac {p^{2}}{\rho v}}} , where ρ is the density of air and v {\displaystyle v} is the speed of sound Gelfand, S A., 1990. Hearing:

Freezing level (488 words) [view diff] exact match in snippet view article find links to article

a large area. It varies under two major conditions: A change in the density of air due to weather fronts. This changes the isotherm gradually, over tens

Homosphere (580 words) [view diff] exact match in snippet view article find links to article

dioxide. It contains over 99% of the mass of the Earth's atmosphere. The density of air decreases with height in the homosphere. By definition & notably, it

Diving weighting system (8,088 words) [view diff] exact match in snippet view article find links to article

be carried to allow for this reduction in weight of gas supply. (the density of air at normal atmospheric pressure is approximately 1.2 kg/m3, or approximately

Reflection seismology (10,213 words) [view diff] exact match in snippet view article find links to article

propagates along a free surface of a solid, but the elastic constants and density of air are very low compared to those of rocks so the surface of the Earth

Lake Nyos disaster (2,398 words) [view diff] exact match in snippet view article find links to article

swept the shore on one side. Since carbon dioxide is 1.5 times the density of air, the cloud hugged the ground and moved down the valleys, where there

Bruno Rossi (10,851 words) [view diff] exact match in snippet view article find links to article

intensity of the hard component increases with altitude, while the density of air decreases, Compton suggested that the investigations should be carried

Ground-glass opacity (2,774 words) [view diff] exact match in snippet view article find links to article

chest radiographs, normal lungs appear dark due to the relative lower density of air compared to the surrounding tissues. When air is replaced by another

Liquid breathing (5,932 words) [view diff] exact match in snippet view article find links to article

viscous and denser than gases, (for example water is about 850 times the density of air). Any increase in the diver's metabolic activity also increases CO2

Dole effect (755 words) [view diff] exact match in snippet view article find links to article

.4..268D. doi:10.1063/1.1749834. Morita, N. (1935). "The increased density of air oxygen relative to water oxygen". J. Chem. Soc. Japan. 56: 1291. Kroopnick

Flow map (2,217 words) [view diff] exact match in snippet view article find links to article

Origin-destination flow map of all commercial passenger airline routes as of 2014. Brighter yellow represents higher density of air routes.

Tidal stream generator (5,853 words) [view diff] exact match in snippet view article find links to article

higher density of water relative to air (water is about 800 times the density of air) means that a single generator can provide significant power at low

Tidal stream generator (5,853 words) [view diff] exact match in snippet view article find links to article

higher density of water relative to air (water is about 800 times the density of air) means that a single generator can provide significant power at low

Speed skydiving (1,099 words) [view diff] exact match in snippet view article find links to article

their maximum speed at as high an altitude as possible so that the density of air is at a minimum. Weather can have an extraordinary effect on a competition

Air mass (astronomy) (5,390 words) [view diff] exact match in snippet view article

\rho \,\mathrm {d} s\,.} where ρ {\displaystyle \rho } is volumetric density of air. Thus σ {\displaystyle \sigma } is a type of oblique column density

Phases of fluorine (895 words) [view diff] exact match in snippet view article find links to article

still has some uncertainty, dates to a 1970 paper by Linus Pauling. Density of air at 100 kilopascal and 0 °C is 1.2724 g/L. Jaccaud et al. 2005, p. 2

Supermarine Spitfire variants: specifications, performance and armament (2,714 words) [view diff] exact match in snippet view article find links to article

series) the power would start to drop as the atmospheric pressure (the density of air) dropped. As the critical altitude was passed a pressure-operated aneroid

Sound attenuator (2,545 words) [view diff] exact match in snippet view article find links to article

{\displaystyle K_{f}} = The friction loss coefficient ρ {\displaystyle \rho } = density of air v p 2 {\displaystyle v_{p}^{2}} = passage velocity The perimeter, area

Float serve (1,026 words) [view diff] exact match in snippet view article find links to article

a volleyball in motion in the air, is found by the product of mass density of air, diameter of the ball, and the ball’s velocity, all divided by the viscosity

History of aerodynamics (3,897 words) [view diff] exact match in snippet view article find links to article

aircraft began to travel faster, aerodynamicists realized that the density of air began to change as it came into contact with an object, leading to a

Gas kinetics (1,736 words) [view diff] exact match in snippet view article find links to article

transonic and supersonic flights. As aircraft began to travel faster, the density of air began to change, considerably increasing the air resistance as the air

Non-line-of-sight propagation (6,551 words) [view diff] exact match in snippet view article find links to article

useful property of the Earth's atmosphere is that, on average, the density of air gas molecules reduces as the altitude increases up to approximately

Propeller Research Tunnel (746 words) [view diff] exact match in snippet view article find links to article

had been using the Variable Density Tunnel in order to increase the density of air to keep the Reynolds number in testing similar to the Reynolds number

Nuclear blackout (3,283 words) [view diff] exact match in snippet view article find links to article

At higher altitudes, from 100,000 to 200,000 feet (30–60 km), the density of air is not enough to be a significant effect, and the fireball continues

Flotation of flexible objects (3,051 words) [view diff] exact match in snippet view article find links to article

{\displaystyle h} . The density of water is ρ {\displaystyle \rho } , the density of air is considered negligible, and the plate density, ρ s {\displaystyle

Representations of the atmospheric boundary layer in global climate models (1,582 words) [view diff] exact match in snippet view article find links to article

turbulent heat flux, and E represents the turbulent moisture flux. ρ is the density of air, u', v', and w' are velocity perturbations, and θ' and q' are potential