# Constant

## Meanings and phrases

adj.

- unvarying in nature; changeless; invariant; unvarying
- steadfast in purpose or devotion or affection
- uninterrupted in time and indefinitely long continuing; ceaseless; incessant; never-ending; perpetual; unceasing; unremitting

n.

- a quantity that does not vary; constant quantity; invariable
- a number representing a quantity assumed to have a fixed value in a specified mathematical context

n.

- constant used in the calculation of the ideal gas constant

n.

- English composer and conductor (1905-1951); Lambert; Leonard Constant Lambert

n.

- (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today; Hubble's constant; Hubble's parameter; Hubble parameter

n.

- (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today; Hubble constant; Hubble's parameter; Hubble parameter

n.

- English composer and conductor (1905-1951); Lambert; Constant Lambert

n.

- the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second; h

n.

- (physics) the universal constant relating force to mass and distance in Newton's law of gravitation; gravitational constant; universal gravitational constant; G

n.

- the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality; factor of proportionality

n.

- a quantity that does not vary; constant; invariable

n.

- an arbitrary constant in the equations of general relativity theory

- This cosmological constant problem remains a major unanswered problem in physics.
- Einstein later declared the cosmological constant the biggest blunder of his life.
- The ΛCDM model of the universe contains dark energy in the form of a cosmological constant.

n.

- the equilibrium constant for a reversible dissociation

n.

- (chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction)

- Thus, catalyst does not alter the equilibrium constant.
- The hydration equilibrium constant of carbonic acid is formula_1 (at 25 °C).
- The concentration quotient is a simple multiple of the equilibrium constant.

n.

- (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole; universal gas constant; R

n.

- (physics) the universal constant relating force to mass and distance in Newton's law of gravitation; universal gravitational constant; constant of gravitation; G

- formula_1 is the speed of light, formula_2 is the gravitational constant.
- Examples of this follow: For gravity: where formula_96 is the gravitational constant, and formula_97 is the mass of object "n".
- He learned glassblowing and electronics there, and tried to measure the universal gravitational constant using 100-pound cannonballs.

n.

- (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight; law of definite proportions

n.

- a wave number characteristic of the wave spectrum of each element; rydberg; rydberg unit

n.

- the rate at which radiant solar energy is received at the outer layer of the earth's atmosphere

n.

- (electronics) the time required for the current or voltage in a circuit to rise or fall exponentially through approximately 63 per cent of its amplitude
- the ratio of the inductance of a circuit in henries to its resistance in ohms

- Receiver interference declines by about 8.7 dB per time constant.
- More than one time constant is needed when describing reactions of higher order.
- The membrane time constant measures the amount of time for an electrotonic potential to passively fall to 1/e or 37% of its maximum.

n.

- (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole; gas constant; R

n.

- (physics) the universal constant relating force to mass and distance in Newton's law of gravitation; gravitational constant; constant of gravitation; G

E.g.

- The system is under constant pressure ().
- In this article only the constant pressure case is considered.
- We apply it to the special case with a constant pressure at the surface.

E.g.

- There was hatred and constant threat of violence.
- As a youth, Gibbon's health was under constant threat.
- It is a constant threat to legume production.

E.g.

- Similarly, Julia sets have the same rules, except where formula_145 remains constant.
- The money supply remains constant in wage units and the rate of interest is unaffected.
- After one iteration, the number of extraordinary points on the surface remains constant.

E.g.

- Since its reorganization, the "Macropædia" has not remained constant.
- Bhullar population in the current Majha region of Punjab India remained constant.
- As a percentage of GDP, the external debt remained constant between 2004 and 2005.

E.g.

- In this phase, the larva swims with an approximately constant speed.
- Letters are signed at a constant speed; a pause functions as a word divider.
- That is, it will be the same from any frame of reference moving at a constant speed.

E.g.

- When there is snow, the ice stays at constant temperature.
- It worked at constant temperature, and at atmospheric pressure.
- The cave provided shelter and maintained a constant temperature.

E.g.

- The light output remains almost constant throughout their life.
- The almost constant breeze keeps conditions reasonably comfortable.
- Medieval Spain and Portugal saw almost constant warfare between Muslims and Christians.

E.g.

- Mammary glands remain relatively constant throughout life.
- The river's discharge averaged over the year is , and the river's flow is relatively constant.
- The town features relatively constant temperatures year-round, with average temperature hovering around .

E.g.

- The total number of atoms of each element will remain constant.
- If regional snow lines stay constant, then the glaciers remain constant.
- Thus, it can be multiplied by the volume per source and remain constant, thus formula_55.

E.g.

- Dipole moment values can be obtained from measurement of the dielectric constant.
- Hence we define the "relative" permittivity (or dielectric constant) , and the "relative" permeability .
- In the case of ferroelectric or conducting material, the particles would have a high dielectric constant.

E.g.

- They contain only constant numbers and a single variable without an exponent.
- He's the only constant member of the band since its inception to the present day.
- Regardless of the method used, only constant monitoring can prevent future contamination.

E.g.

- Mammary glands remain relatively constant throughout life.
- Laying dates are remarkably constant throughout Great Britain.
- The light output remains almost constant throughout their life.

E.g.

- Uniform circular motion refers to the case of constant rate of rotation.
- The pumps make up the difference, and can do that while running at a constant rate.
- Most growth occurs in the first year of life and continues at a relatively low and constant rate afterwards.

E.g.

- All the while Alan is haunted by the constant presence of the mop.
- He was a constant presence on city councils and in local organizations.
- For centuries, the tree Yggdrasil has been a constant presence in the lives of the people of Tharsis.

E.g.

- During the Reconquista, the region was in a constant state of siege and battle.
- It refers to the fact that all conditioned things (sankhara) are in a constant state of flux.
- The pleasure capital of Yusnaan is a city of revelry where people live in a constant state of celebration.

E.g.

- So, therefore, the speed of light is not constant.
- All positions are not constant in the local councils.
- In 1989, it was noticed that the brightness of δ Coronae Borealis is not constant.

E.g.

- They are unswept, with constant chord and have small end-plate fairings at the tips.
- The H-22B-3 has a simple wooden two spar wing of constant chord and dihedral 1° 20', covered with fabric.
- The aspect ratio of the latter is 10, that of the lower about 6.7 and both planes are unswept with constant chord.

E.g.

- Since then it has been in constant use for first-class, List A and Twenty20 matches.
- The post has been in virtually constant use since it was first formed as the "Sparta Maneuver Tract" on 14,000 acres (57 km) in 1909.
- The “Old Church” had served its purpose well, having been in constant use for about 140 years, but was now in need of almost continual and costly maintenance.

E.g.

- The spring has a constant flow of 22 to a day so no chlorination is required.
- What can we say, in general, about the trajectories on a surface animated by a constant flow?
- Surface supplied diving equipment may provide a constant flow or demand regulated gas supply.

E.g.

- He's the only constant member of the band since its inception to the present day.
- While Raposa is the only constant member of the band, his records and live performances feature a rotating cast of musicians.
- Led by guitarist and sole constant member Shin Daechul, they are credited as being the first heavy metal band in South Korea.

E.g.

- As an example of the minor contribution other formation reactions play, the reaction: has a rate constant of 2.2.
- Due to rate constant and concentration considerations, the most important reactants for the destruction of c-CH are HCO, H, and HO.
- After the fourth question, McEnroe would make a one-time offer: keep the redline rate constant for the next question, at a cost of $25,000.

E.g.

- Her guilty conscience is her constant companion.
- He is best known as the constant companion of Devil Dinosaur.
- To Conan's discomfiture, the supernatural is his constant companion.

E.g.

- This shark has not been demonstrated to maintain a constant body temperature.
- Bony fish have a swim bladder which helps them maintain a constant depth in the water column, but not a cloaca.
- The middle ear is also lined with blood sinuses that inflate during diving, helping to maintain a constant pressure.

E.g.

- When numbers are high, this can form a constant stream.
- It is a top-down space shooter with available power-ups and a constant stream of enemies.
- A constant stream of pilgrims generated a demand for these items, which also provided jobs for women.

E.g.

- The computation in line 6 can be done in constant time (formula_111).
- Both "store" and "select" take (deterministic worst case) constant time.
- Most hash table implementations require only amortized constant time on average.

E.g.

- The length of the jump is fairly constant.
- Some sectors kept a fairly constant share of the work force.
- Thus, at any given time, the total amount of ATP + ADP remains fairly constant.

E.g.

- A constant source of inspiration for his music has come from Thailand.
- The difference between the accents of the two countries is a constant source of amusement.
- The discussions surrounding women's issues were a constant source of inspiration and questioning.

E.g.

- The exercise is performed with the heels of the feet kept in constant contact with the ground.
- Buffalo kept in constant contact with the other bands to ensure the Ojibwa upheld their obligations.
- The arms must be in constant contact with the chest or rib cage; the buttocks must be in constant contact with the ground.

E.g.

- The site became infamous due to constant torture of the inmates.
- The original kepi cover was khaki and due to constant washing turned white quickly.
- By 1583, the number of villages was reduced to only 434, due to constant Crimean Tatar raids.

E.g.

- The length of such a day is nearly constant (24 hours ± 30 seconds).
- They are warm-blooded, i.e., they hold a nearly constant body temperature.
- Cabral had said that was all he needed for his nearly constant singing tours.

E.g.

- Among the underprivileged, constant fear of famine was always prevalent.
- The constant fear, shame and pressure from his family forces him to leave home, mentally instable.
- She is 22 years old now and has to live in constant fear of suffocation despite using an oxygen concentrator.

E.g.

- Assume that balls travel with constant velocity.
- Inertia therefore applies equally well to constant velocity motion as it does to rest.
- Galileo concluded that motion in a constant velocity was completely equivalent to rest.

E.g.

- Thus M is held constant, while do(X) is computed.
- where In "constant-volume calorimetry" the pressure is not held constant.
- A line joining tangency points of isoquants and isocosts (with input prices held constant) is called the expansion path.

E.g.

- The coupling constant formula_4 is dimensionless in 4-dimensional spacetime.
- For a (renormalizable, polynomial) self-interacting field, one will have formula_11 where λ is a coupling constant.
- But standard perturbation theory techniques don't work at distances, where the running coupling constant reaches 1.