At 265 hours and 37 minutes into the mission, at a velocity of about, Apollo 16 began atmospheric reentry.

At a pressure of 55 GPa ( roughly 540 times atmospheric pressure ) bromine converts to a metal.

At that temperature, the vapor pressure of the liquid becomes sufficient to overcome atmospheric pressure and allow bubbles of vapor to form inside the bulk of the liquid.

At higher elevations, where the atmospheric pressure is much lower, the boiling point is also lower.

At 25 ° C and atmospheric pressure, one liter of water dissolves 3. 26 g or 1. 125 L of gaseous chlorine.

At the bottom of the trench, where the plates meet, the water column above exerts a pressure of, over one thousand times the standard atmospheric pressure at sea level.

At atmospheric pressure molecular nitrogen condenses ( liquefies ) at 77 K (− 195. 79 ° C ) and freezes at 63 K (− 210. 01 ° C ) into the beta hexagonal close-packed crystal allotropic form.

At 100 ° C and atmospheric pressure, equilibrium is not reached until the air is 100 % water.

At atmospheric pressure the mean free path of air is about 70 nm.

At the other end of the scale, helium does not freeze at all at normal pressure, even at temperatures very close to absolute zero ; pressures over 20 times normal atmospheric pressure are necessary.

At high latitudes ( near the Earth's poles ), they are very low, making communication difficult or impossible due to factors such as atmospheric refraction, Earth's thermal emission, line-of-sight obstructions, and signal reflections from the ground or nearby structures.

At a pressure of above atmospheric pressure, water in a pressure cooker can reach a temperature of up to.

At high elevations, the Earth's atmosphere is thinner thereby minimizing the effects of atmospheric turbulence and resulting in better astronomical " seeing ".

At night, the same receiver may pick up signals as far away as 1110 KFAB in Nebraska reliably, depending on atmospheric noise and man-made interference.

At the time of its upgrade, the storm was located in an area of higher than normal atmospheric pressure, although conditions favored further development.

At altitude, atmospheric pressure is lower than at sea level, so surfacing at the end of an altitude dive leads to a greater reduction in pressure and an increased risk of decompression sickness.

At the short wavelength end the cut-off is determined by the atmosphere ; specifically atmospheric seeing.

At the time, Canada only possessed upper atmospheric launch capabilities, and therefore Alouette 1 was sent aloft by the American National Aeronautics and Space Administration ( NASA ) from Vandenberg AFB in California.

At sea level, an ambient temperature of 70 ° F ( 21 ° C ), and under normal atmospheric conditions, the speed of sound is approximately per second ( 347 m / s ).

At present, the highest temperature superconducting materials are the cuprates, which have demonstrated superconductivity at atmospheric pressure at temperatures as high as-135 ° C ( 138 K ).

At 1200 UTC, Agnes reached its minimum atmospheric pressure of, as reported by a reconnaissance aircraft.

At liquid level in the top reservoir, the liquid is under atmospheric pressure, and as one goes up the siphon, the hydrostatic pressure decreases ( under vertical pressure variation ), since the weight of atmospheric pressure pushing the water up is counterbalanced by the column of water in the siphon pushing down ( until one reaches the maximum height of a barometer / siphon, at which point the liquid cannot be pushed higher ) – the hydrostatic pressure at the top of the tube is then lower than atmospheric pressure by an amount proportional to the height of the tube.

At the same time, there was increased reason for a quick meeting lest the Soviet leader, as a result of those episodes, come to a dangerously erroneous conclusion about the West's ability and determination to resist Communist pressure.

At room temperature and pressure, barium has a body-centered cubic structure, with a barium – barium distance of 503 picometers, expanding with heating at a rate of approximately 1. 8 /° C.

At standard temperature and pressure, two chlorine atoms form the diatomic molecule Cl < sub > 2 </ sub >.

At low pressure, there was enough space between the gas atoms that the ions could accelerate to high enough speeds that when they struck another atom they knocked electrons off of it, creating more positive ions and free electrons in a chain reaction.

At these very high vacuums the effect of photon radiation pressure on the vanes can be observed in very sensitive apparatus ( see Nichols radiometer ) but this is insufficient to cause rotation.

At boiling point, all volatile components boil, but for a component, its percentage in the vapor is the same as its percentage of the total vapor pressure.

At the moment, it is not known how the material is produced or if it remains stable without applied pressure, however, there is conjecture that it is possible to produce a new stable state of matter by compressing ultracold deuterium in a Rydberg state.

" Interviewed for the same broadcast, Mullen said the policy would continue to be implemented until the law was repealed, and that his advice was to " move in a measured way ... At a time when we're fighting two conflicts there is a great deal of pressure on our forces and their families.

At standard temperature, pressure and concentration conditions, the cell's emf ( measured by a multimeter ) is 0. 34 V. By definition, the electrode potential for the SHE is zero.

At the 2010 World Cup itself England drew their opening two games leading to questions about the team's spirit, tactics and ability to handle pressure.

At the same time, Relena formally dissolves the Sanc Kingdom due to the tremendous pressure from Romefeller.

At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H < sub > 2 </ sub >.

At those times when John was preparing for campaigns in Normandy, for example, huge quantities of silver had to be withdrawn from the economy and stored for months, which unintentionally resulted in periods during which silver coins were simply hard to come by, commercial credit difficult to acquire and deflationary pressure placed on the economy.

Lithium is superconductive below 400 μK at standard pressure and at higher temperatures ( more than 9 K ) at very high pressures (> 20 GPa ) At temperatures below 70 K, lithium, like sodium, undergoes diffusionless phase change transformations.

At this pressure the density of water is increased by 4. 96 %, making ninety-five litres of water under the pressure of the Challenger Deep contain the same mass as a hundred litres at the surface.

At such depths, water pressure is extreme and there is no sunlight, but some life still exists.

At room temperature, honey is a supercooled liquid, in which the glucose will precipitate into solid granules.

At it melts into a cloudy liquid, and at it melts again and the cloudy liquid becomes clear.

At high temperatures used to prepare glass, the material is a viscous liquid.

At the critical point, the liquid and gas become indistinguishable.

At the point where liquid begins to condense, the direction of the temperature and pressure curve will abruptly change to trace along the phase line until all of the water has condensed.

At temperatures just below the triple point, compression at constant temperature transforms water vapor first to solid and then to liquid.

At temperatures above 273 K ( 0 ° C ), increasing the pressure on water vapor results first in liquid water and then a high-pressure form of ice.

At the melting point the solid and liquid phase exist in equilibrium.

: At constant temperature, the amount of a given gas dissolved in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.

At higher altitudes, the boiling point of liquid in the pressure cooker will be slightly lower than it would be at sea level.

At the phase transition point ( for instance, boiling point ) the two phases of a substance, liquid and vapor, have identical free energies and therefore are equally likely to exist.

* 2005 At the RHIC accelerator of Brookhaven National Laboratory they have created a quark-gluon liquid of very low viscosity, perhaps the quark-gluon plasma

At a very basic level hydraulics is the liquid version of pneumatics.

At some point of low temperature and high pressure, real gases undergo a phase transition, such as to a liquid or a solid.

At Fairchild AFB, support facilities, including a liquid oxygen plant, were completed by January 1961.

At a given temperature a lipid bilayer can exist in either a liquid or a gel ( solid ) phase.

At first, pectin was sold as a liquid extract, but nowadays pectin is often used as dried powder that is easier to store and handle than a liquid.

At present, however, the superconducting magnets that are used in the process have to themselves be cooled down to the temperature of liquid nitrogen, or with even colder, and relatively expensive, liquid helium.

At steady state conditions, the vapor and liquid on each tray are at equilibrium.