Luminous Flux Definitions

Useful Words

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Candela : روشنی کی شدت کا اندازہ لگانے کی معیاری اکائی , Brightness : چمک , Magnetomotive Force : مقناطیسی قوت , Bolide : شہاب ثاقب , Borax : سہاگا , Photosphere : روشنی کا کرہ , Glowworm : جگنو , Absorptance : شعائیں جذب کرنے کا پیمانہ , Heraclitus : یونانی فلسفی , Absorption Factor : جذب کرنے کی صلاحیت , Moon : ماہتاب , Photometer : روشنی کی شدد کے ناپنے والا آلہ , Floodgate : پانی کا پھاٹک , Electrical Energy : بجلی , Luminous Energy : روشنی کی توانائی , Opaque : غیر شفاف , Time And A Half : فاضل وقت کام کرنے کی اجرت یا مزدوری , Radiant Energy : اشعاعی توانائی , Generator : برقی کرنٹ پیدا کرنے کی مشین , Atomic : ایٹمی , Turbine : چرخاب , Photovoltaic Cell : وہ سیل جس کے ذریعے سورج کی روشنی کو برقی توانائی میں بدل لیا جاتا ہے , Arthur Compton : امریکی ماہر طبعیات , Running Light : پہلو سے آنے والی روشنی , Dark-Field Microscope : جدید خوردبین , Searchlight : سرچ لائٹ , Laser : روشنی کی تابش بڑھانے کا آلہ , Acer Saccharinum : چاندی میپل , Butternut : شمال امریکہ میں پایا جانے والا اخروٹ کا درخت , Gleam : کرن , Celerity : تیزی

Useful Words Definitions

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Candela: the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin.

Brightness: the quality of being luminous; emitting or reflecting light.

Magnetomotive Force: the force that produces magnetic flux.

Bolide: an especially luminous meteor (sometimes exploding).

Borax: an ore of boron consisting of hydrated sodium borate; used as a flux or cleansing agent.

Photosphere: the intensely luminous surface of a star (especially the sun).

Glowworm: the luminous larva or wingless grub-like female of a firefly.

Absorptance: a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber.

Heraclitus: a presocratic Greek philosopher who said that fire is the origin of all things and that permanence is an illusion as all things are in perpetual flux (circa 500 BC).

Absorption Factor: (physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body.

Moon: the moon is Earth`s natural satellite, orbiting the planet and reflecting sunlight to appear as a luminous, changing shape in the night sky. It influences tides and has cultural significance.

Photometer: measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source.

Floodgate: regulator consisting of a valve or gate that controls the rate of water flow through a sluice.

Electrical Energy: energy made available by the flow of electric charge through a conductor.

Luminous Energy: the energy associated with visible light.

Opaque: not transmitting or reflecting light or radiant energy; impenetrable to sight.

Time And A Half: a rate of pay that is 1.5 times the regular rate; for overtime work.

Radiant Energy: energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter.

Generator: engine that converts mechanical energy into electrical energy by electromagnetic induction.

Atomic: (weapons) deriving destructive energy from the release of atomic energy.

Turbine: rotary engine in which the kinetic energy of a moving fluid is converted into mechanical energy by causing a bladed rotor to rotate.

Photovoltaic Cell: a cell that converts solar energy into electrical energy.

Arthur Compton: United States physicist noted for research on x-rays and gamma rays and nuclear energy; his observation that X-rays behave like miniature bowling balls in their interactions with electrons provided evidence for the quantal nature of light (1892-1962).

Running Light: light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow.

Dark-Field Microscope: light microscope that uses scattered light to show particles too small to see with ordinary microscopes.

Searchlight: a light source with reflectors that projects a beam of light in a particular direction.

Laser: an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light.

Acer Saccharinum: a common North American maple tree; five-lobed leaves are light green above and silvery white beneath; source of hard close-grained but brittle light-brown wood.

Butternut: North American walnut tree having light-brown wood and edible nuts; source of a light-brown dye.

Gleam: a flash of light (especially reflected light).

Celerity: a rate that is rapid.