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searching for A Perfect Vacuum 30 found (49 total)

Vacuum (7,598 words) [view diff] case mismatch in snippet view article find links to article

pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use the

Suction (397 words) [view diff] case mismatch in snippet view article find links to article

pressure-gradient force. If all gas or fluid is removed the result is a perfect vacuum in which the pressure is zero. Hence, no negative pressure forces can

Vacuum level (405 words) [view diff] case mismatch in snippet view article find links to article

free stationary electron that is outside of any material (it is in a perfect vacuum). It may be taken as infinitely far away from a solid, or, defined

Permittivity (4,437 words) [view diff] case mismatch in snippet view article find links to article

in physics and engineering as well as in chemistry. By definition, a perfect vacuum has a relative permittivity of exactly 1 whereas at standard temperature

QED vacuum (2,634 words) [view diff] case mismatch in snippet view article find links to article

needed sensitivity to detect quantum electrodynamic nonlinearity. A perfect vacuum is itself only attainable in principle. It is an idealization, similar

Paul Drude (534 words) [view diff] case mismatch in snippet view article find links to article

responsible for introducing the symbol c for the speed of light in a perfect vacuum. Toward the end of his tenure at Leipzig, Drude was invited to write

Suction cup (985 words) [view diff] case mismatch in snippet view article find links to article

cup does not slide sideways or peel off. The suction cup contains a perfect vacuum; in reality, a small partial pressure will remain on the interior,

Scharnhorst effect (574 words) [view diff] case mismatch in snippet view article find links to article

imaginary part of n is negative. Vacuum fluctuations exist even in a perfect vacuum. The vacuum fluctuations are influenced by conducting plates nearby

William Morgan (actuary) (829 words) [view diff] exact match in snippet view article

Experiments Made in Order to Ascertain the Non-Conducting Power of a Perfect Vacuum, &c". Philosophical Transactions of the Royal Society. 75. Royal Society

Horror vacui (philosophy) (1,399 words) [view diff] case mismatch in snippet view article

repeated Galileo's and Torricelli's experiment and foresaw no reason why a perfect vacuum could not be achieved in principle. Scottish philosopher Thomas Carlyle

Vacuum mattress (1,221 words) [view diff] case mismatch in snippet view article find links to article

long board Its drawbacks include: Relatively fragile (useless unless a perfect vacuum is maintained). Increased cost relative to a traditional long spine

Electrical resistivity and conductivity (8,177 words) [view diff] case mismatch in snippet view article find links to article

was concluded that in a perfect Vacuum it would pass any distance without the least Obstruction. But having made a perfect Vacuum by means of boil’d Mercury

Electric current (4,331 words) [view diff] no match in snippet view article find links to article

oxygen [O2 → 2O], which then recombine creating ozone [O3]). Since a "perfect vacuum" contains no charged particles, it normally behaves as a perfect insulator

Antihydrogen (2,217 words) [view diff] case mismatch in snippet view article find links to article

positrons, and electrons. If antihydrogen atoms were suspended in a perfect vacuum, they should survive indefinitely. As an anti-element, it is expected

Equations for a falling body (1,455 words) [view diff] case mismatch in snippet view article find links to article

drag force on any body that falls through any atmosphere other than a perfect vacuum, and this drag force increases with velocity until it equals the gravitational

Madison Symmetric Torus (3,550 words) [view diff] case mismatch in snippet view article find links to article

also present. These exist naturally due to the inability to achieve a perfect vacuum in a fusion reactor before fueling. Thus, materials such as water vapor

Perpetual motion (5,049 words) [view diff] case mismatch in snippet view article find links to article

in other objects, bringing friction into the problem. Furthermore, a perfect vacuum is an unattainable goal since both the container and the object itself

Telecommunications (9,226 words) [view diff] case mismatch in snippet view article find links to article

absence of an atmosphere between the two. Radio waves travel through a perfect vacuum just as easily as they travel through air, fog, clouds, or any other

Choked flow (2,667 words) [view diff] case mismatch in snippet view article find links to article

orifice continues to increase as the downstream pressure is lowered to a perfect vacuum, though the mass flow rate increases slowly as the downstream pressure

Orifice plate (3,762 words) [view diff] case mismatch in snippet view article find links to article

orifice continues to increase as the downstream pressure is lowered to a perfect vacuum, though the mass flow rate increases slowly as the downstream pressure

Vacuum engineering (2,201 words) [view diff] case mismatch in snippet view article find links to article

process. Vacuum will be used in this process to attempt to create a perfect vacuum. A type of vacuum such as partial vacuum can be caused by the usage

Ray tracing (graphics) (7,832 words) [view diff] case mismatch in snippet view article

this "ray" as a stream of photons traveling along the same path. In a perfect vacuum this ray will be a straight line (ignoring relativistic effects). Any

X-ray (13,453 words) [view diff] exact match in snippet view article find links to article

Experiments Made in Order to Ascertain the Non-Conducting Power of a Perfect Vacuum, &c". Philosophical Transactions of the Royal Society. 75. Royal Society

Outer space (14,601 words) [view diff] case mismatch in snippet view article find links to article

within the Milky Way. Outer space is the closest known approximation to a perfect vacuum. It has effectively no friction, allowing stars, planets, and moons

Quantum field theory (14,839 words) [view diff] case mismatch in snippet view article find links to article

in the lowest energy state (the ground state). Therefore, even in a perfect vacuum, there remains an oscillating electromagnetic field having zero-point

Glossary of civil engineering (6,461 words) [view diff] case mismatch in snippet view article find links to article

pressure The pressure of a system that is zero-referenced against a perfect vacuum, using an absolute scale, so that it is equal to gauge pressure plus

Pressure measurement (10,176 words) [view diff] case mismatch in snippet view article find links to article

following terms are used: Absolute pressure is zero-referenced against a perfect vacuum, using an absolute scale, so it is equal to gauge pressure plus atmospheric

Thermodynamic temperature (13,332 words) [view diff] case mismatch in snippet view article find links to article

of the analysis. Accordingly, all T = 0 closest-packed matter under a perfect vacuum has either minimal or zero enthalpy, depending on the nature of the

Glossary of physics (12,981 words) [view diff] case mismatch in snippet view article find links to article

sample. absolute motion absolute pressure Is zero-referenced against a perfect vacuum, using an absolute scale, so it is equal to gauge pressure plus atmospheric

Glossary of engineering: A–L (31,725 words) [view diff] case mismatch in snippet view article find links to article

metal–solution interface). Absolute pressure is zero-referenced against a perfect vacuum, using an absolute scale, so it is equal to gauge pressure plus atmospheric