speed

(redirected from speed of light)
Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.
Related to speed of light: light year, E=mc2

speed

(spēd),
The magnitude of velocity without regard to direction. Compare: velocity.

speed

(spēd)
n.
Slang A stimulant drug, especially amphetamine or methamphetamine.
v. sped (spĕd) or speeded, speeding, speeds
v.intr.
Slang To be under the influence of a stimulant drug.

speed

Etymology: AS, spedan, to hasten
1 the rate of change of position with time. Compare velocity.
2 See amphetamines.
3 a reciprocal of the amount of radiation used to produce an image with various components of an x-ray imaging system, such as screens, film, and image intensifiers. There is often a tradeoff between radiation dose to the patient and the overall image quality. Thus a system using little radiation is "fast," whereas one requiring more radiation is "slow."
4 the amount of exposure of film to light or x-rays needed to produce a desired image. X-ray film speed usually is indicated as the reciprocal of the exposure in roentgens necessary to produce a density of 1 above the base and fog levels. See also fogged film fault.
Drug slang A regional street synonym for amphetamine, which may also refer to methamphetamine and crack cocaine
Vox populi Rapidity of movement

SPEED

Cardiology A clinical trial–Strategies for Patency Enhancement in the Emergency Department

speed

Drug slang A street synonym for amphetamine, which may also refer to methamphetamine and crack

speed

(spēd)
The magnitude of velocity without regard to direction.
Compare: velocity

speed

the change of distance with respect to time. A scalar quantity (i.e. having no directional component). linear speed is usually measured in metres per second (m.s-1), kilometres per hour (km.h-1) or miles per hour (mph), and angular speed in degrees per second (°.s-1) or radians per second (rad.s-1) See also velocity.

speed,

n the relative rapidity of action; rate of motion.
speed, film,
speed, high,
n a relatively great rapidity of motion. In cavity preparations, rotary instruments are classified according to the number of revolutions per minute (rpm) made by the cutting tool. Designation of each speed range presently varies. In general, conventional speed is 10,000 to 60,000 rpm, high speed is 60,000 to 100,000 rpm, and ultrahigh speed is more than 100,000 rpm. May also be used to describe an evacuation system.
speed of light,
n a speed of 186,300 miles/sec.
speed of radiation,
References in periodicals archive ?
We have exhaustively explored our familiar physical world below the speed of light.
But a new report by a different team has cast doubt on the shocking result, suggesting that neutrinos cannot move faster than the speed of light.
Lead researcher Dr Antonio Ereditato has labelled the results as "crazy" because Albert Einstein's theory of relativity - which has been the basis of physics for a century - depends on the idea that nothing can exceed the speed of light in a vacuum.
The addition of Speed Of Light Broadband will add to our base of residential and business customers," commented Blue Wireless & Data Chief Operating Officer, John Mills.
According to Einstein, the cosmic speed limit is 186,282 miles per second - the speed of light.
The speed of light would limit the star to a 43-kilometer radius, says astronomer Phil Kaaret of the University of Iowa in Iowa City.
They also raise questions about the speed of light, especially whether it may not be always precisely the same.
Salesnet, the leading provider of on-demand CRM software focused on driving sales effectiveness, today announced that it has been chosen as one of the elite "Steppin' Out" companies in the recently-released third edition of CRM at the Speed of Light, authored by international thought leader Paul Greenberg.
org, Shu describes both mass and length as interchangeable with the conversion factor being dependant on the speed of light and the gravitational constant, neither of which actually need to be constant.
This would correspond to a velocity many times the speed of light (light only travels about 0.
Accompanying many big thunderstorm complexes - which commonly girdle the globe, especially in the tropics - are violent red flashes that scientists say are formed by a ``runaway atmospheric breakdown'' that blows apart air molecules and sends electrons out into space faster than the speed of light.
This is the third edition of CRM at the Speed of Light, one of the most successful and popular books on CRM.