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A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light from electricity. These components usually have a base of ceramic, metal, glass or plastic, which makes an electrical connection in the socket of a light fixture.

Device for Conducting Electricity Into Lamps

A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light…

A lantern is a portable lighting device used to illuminate broad areas. Lanterns may be used for signaling, or as general light sources for camping also to guide your path somewhere. In the older days it would have been used like a torch. Dim varieties are often used for decoration.

Cycle Lamp

A lantern is a portable lighting device used to illuminate broad areas. Lanterns may be used for signaling,…

A blue print frame used to make copies of mechanical drawing. The process is done by exposing a sensitized paper in contact with the tracing paper to the light source in the frame. A chemical reaction takes place when washing with water to create a strong blue color, creating the image.

Blue Print Frame

A blue print frame used to make copies of mechanical drawing. The process is done by exposing a sensitized…

An exercise in creating a line shading, where the line is becoming thicker. The pen is slightly changed throughout the drawing.

Line Shading Light to Dark Tint

An exercise in creating a line shading, where the line is becoming thicker. The pen is slightly changed…

An illustration of creating a line shading from dark to light. The lines are gradually become thin. The pen is slightly changed throughout the drawing.

Line Shading Dark to Light Tint

An illustration of creating a line shading from dark to light. The lines are gradually become thin.…

An example of the cylinder shaded by lines. The area without lines are where the light hit the cylinder. The line become darker when it is away from the light source.

Cylinder Line Shading

An example of the cylinder shaded by lines. The area without lines are where the light hit the cylinder.…

"A row of cylinders of different sizes. The effect of polish is given by leaving several brilliant lines, as might occur if light came in through several windows." —French, 1911

Series of Cylinder Line Shading

"A row of cylinders of different sizes. The effect of polish is given by leaving several brilliant lines,…

Shading wheel using lines by estimating how the light hit the surface.

Wheel Shading

Shading wheel using lines by estimating how the light hit the surface.

A lampshade is a fixture that covers the light bulb on a lamp to diffuse the light it emits. Conical, cylindrical and other forms on floor-, desk- or table top-mounted as well as suspended lamp models are the most common and are made in a wide range of materials.

Incandescent Lampshade

A lampshade is a fixture that covers the light bulb on a lamp to diffuse the light it emits. Conical,…

A fourteenth century spherical triangle viewed inside a church. The window is indented with a bottom part sloped to let sun light in.

Gothic Architecture Spherical Triangle Inside Window

A fourteenth century spherical triangle viewed inside a church. The window is indented with a bottom…

A British Royal Navy light large cruiser, H.M.S. Courage, built in early 1915. The cruiser had light armor and was used to attack another light cruisers or raiders.

British Navy H.M.S. Courageous Large Light Cruiser

A British Royal Navy light large cruiser, H.M.S. Courage, built in early 1915. The cruiser had light…

"The Austrian counterscarp casement is constructionally simple. Under the counterscarp wall, on the further side of the ditch, facing the salient angle of the of the work, a chamber is formed with embrasures for rifle, machine gun or light artillery fire along the two adjacent ditch lengths." — Encyclopaedia Britannica, 1922

Austrian Fort Counterscarp Casement

"The Austrian counterscarp casement is constructionally simple. Under the counterscarp wall, on the…

A light minenwerfer with 7.6 cm caliber designed by German during World War I. The series of gears adjusts the angle of the barrel by turning the hand crank.

Rifled Light Minenwerfer Mortar

A light minenwerfer with 7.6 cm caliber designed by German during World War I. The series of gears adjusts…

A light carriage minenwerfer class mortar used for direct fire. The barrel and the shifting lever is moved up during loading, while the angle of the mortar is adjusted by the elevating screw in the front.

Rifled Carriage Light Minenwerfer Mortar

A light carriage minenwerfer class mortar used for direct fire. The barrel and the shifting lever is…

A light fixture is an electrical device used to create artificial light. A luminaire is a lighting fixture complete with the light source or lamp, the reflector for directing the light, an aperture, an the outer shell or housing for lamp alignment and protection, an electrical ballast, if required and connection to a power source.

Lamp Fixture

A light fixture is an electrical device used to create artificial light. A luminaire is a lighting fixture…

This street lamp is a raised source of light on the edge of a road, which is turned on or lit a certain time every night.

Street Lamp

This street lamp is a raised source of light on the edge of a road, which is turned on or lit a certain…

A mechanical drawing practice problem of shading the sides of the inscribed circles. The darker area shows where the light is not hitting the image making the 2D image look 3D. These shadings are done in pen.

Mechanical Drawing Exercise Shading Sides of Inscribed Circle with Ink

A mechanical drawing practice problem of shading the sides of the inscribed circles. The darker area…

Mechanical drawing exercise of shading squares and circle in ink. The squares are first drawn with the right angles, then rounded off with a compass. Using a pen, the sides of the shapes are darkened to show points where no light is hitting the image.

Mechanical Drawing Exercise Shading Sides of Inscribed Squares and Circle with Ink

Mechanical drawing exercise of shading squares and circle in ink. The squares are first drawn with the…

An apparatus used to photograph images in a light microscope. The long camera is connected to the eye piece while the microscope uses a mirror to light the specimen. The image is captured on the photographic plate.

Micrographic Apparatus with Camera and Microscope

An apparatus used to photograph images in a light microscope. The long camera is connected to the eye…

A diagram of Hartmann Spectrocomparator device to measure accurate the star's displacement. The photographed star is clamped on to the device. Then the series of light is reflected onto the photograph into the eyepiece to measuring the star's motion.

Hartmann Spectrocomparator Diagram

A diagram of Hartmann Spectrocomparator device to measure accurate the star's displacement. The photographed…

This lamp post is featured as a standard for many roads as a mean of illumination for drivers throughout the night.

Lamp Post

This lamp post is featured as a standard for many roads as a mean of illumination for drivers throughout…

"The image produced by a microscope formed of two positive systems is inverted, the objective L1 tracing from the object OO1 a real inverted image O'O'1, and the eyepiece L2L2 maintaining this arrangement." —Encyclopaedia Britannica, 1910

Ray Transmission in Compound Microscope with a Positive Ocular

"The image produced by a microscope formed of two positive systems is inverted, the objective L1 tracing…

An illustration of a compound microscope that produces upright image using negative eyepiece. The image is focused onto a concave lens, instead of convex lens, to diverging light.

Ray Transmission in Compound Microscope with a Negative Eyepiece

An illustration of a compound microscope that produces upright image using negative eyepiece. The image…

An illustration of entocentric transmission of a compound microscope. The series of light refracted by the lens causes a projection to make near objects appear larger, and farther objects smaller.

Entocentric Transmission in Compound Microscope Appear Images Larger or Smaller

An illustration of entocentric transmission of a compound microscope. The series of light refracted…

This gas lamp features gas lighting which refers to a technology used to produce light from a gaseous fuel including hydrogen, methane, etc...

Gas Lamp

This gas lamp features gas lighting which refers to a technology used to produce light from a gaseous…

"The intersection of the principal rays lies in front of the object, and consequently objects in front of the plane focused for will be projected on E magnified and the objects lying behind it diminished ("hypercentric" transmission). It produces a perspective representation entirely opposed to ordinary vision." —Encyclopaedia Britannica, 1910

Hypercentric Transmission in Microscopic Objective

"The intersection of the principal rays lies in front of the object, and consequently objects in front…

"Showing a system with chromatic difference of spherical aberration. O" ₌ image of O for red light; O'" for blue. The system is under—corrected for red, and over—corrected for blue rays." —Encyclopaedia Britannica, 1910

Light Correction of Blue and Red Lights using Spherical Lens

"Showing a system with chromatic difference of spherical aberration. O" ₌ image of O for red light;…

A large dissecting stand with magnification eyepiece and mirror reflecting the light source. The stand is useful for dissecting small organisms.

Large Dissecting Stand with Magnification Eyepiece Mirror Reflecting Light Source

A large dissecting stand with magnification eyepiece and mirror reflecting the light source. The stand…

A swift Stephenson's Binocular Microscope with a mirror reflecting light source. The microscope has an adjustable slits to monitor how much light is coming through the sample. Two eyepieces focuses and magnify the sample by adjusting both lenses.

Swift Stephen's Binocular Microscope with Mirror Reflecting Light Source

A swift Stephenson's Binocular Microscope with a mirror reflecting light source. The microscope has…

A Baker demonstration light microscope illustrating the different parts of the microscope. The eyepiece is adjusted at knob F. The mirror J reflects light from a light source to shine light through the sample.

Baker Demonstration Light Microscope with Mirror Reflecting Light Source

A Baker demonstration light microscope illustrating the different parts of the microscope. The eyepiece…

A Greenough's binocular light microscope. The microscope has two eyepieces to view the sample with both eyes. The mirror is used to provide a light source for the microscope by reflecting light.

Greenough's Binocular Light Compound Microscope with Mirror Reflecting Light Source

A Greenough's binocular light microscope. The microscope has two eyepieces to view the sample with both…

A petrographic light microscope used to identify thin layered rocks and minerals. The microscope have two polarizer filter beneath the sample, with circular rotating stage.

Petrographical Light Microscope with Mirror and Eyepieces

A petrographic light microscope used to identify thin layered rocks and minerals. The microscope have…

"The direct—acting steam pump has the steam piston at one end of a rod and the water position at the other end. The steam pressure acts directly on the piston; no fly light, and there is no revolving mass to carry by the dead points." —Derr, 1911

Direct Acting Steam Pump

"The direct—acting steam pump has the steam piston at one end of a rod and the water position…

"If the real image produced by the objective coincides with the collective lens, only the inclination of the principal rays is altered. The lens nearer to the eye is distant from it about its focal length. The eye—lens converts diverging pencils into parallels. Both lenses together form the exit pupil of the objective behind the eye—lens." —Encyclopaedia Britannica, 1910

Ramsden Eyepiece Lens Refraction Diagram

"If the real image produced by the objective coincides with the collective lens, only the inclination…

"They have also a shorter focus for red, and a longer one for blue, and thus magnify the red image more than the blue; and as the objective gives a large blue and small red image, the two cancel one another and a colourless image is produced." —Encyclopaedia Britannica, 1910

Huyegenian Eyepiece Diagram Showing Lens Refraction

"They have also a shorter focus for red, and a longer one for blue, and thus magnify the red image more…

A light reflection diagram of a light microscope using a mirror. The mirror is used in a microscope to provide light for the sample. The light source hits the mirror, then gets reflected onto the small condenser lens on the stage.

Microscope Mirror Illumination by Light Reflection

A light reflection diagram of a light microscope using a mirror. The mirror is used in a microscope…

Illustration showing Abbe illuminating apparatus with condenser. The mirror, m, reflects light from the light source to provide light for viewing the specimen. The reflected light is passed through the condenser then onto the specimen.

Abbe Microscope Mirror Illumination by Light Reflection with Condenser

Illustration showing Abbe illuminating apparatus with condenser. The mirror, m, reflects light from…

A light steel mining cage and car used to raise and lower cars in gold and silver mines. The car is loaded with the minerals from the mined and raised to the surface by a hoist.

Light Steel Safety Mining Cage and Car for Gold and Silver Mines

A light steel mining cage and car used to raise and lower cars in gold and silver mines. The car is…

A light with a reflector and lens mounted on the front of a locomotive, automobile, or other vehicle. Also called headlamp.

Automobile Headlight

A light with a reflector and lens mounted on the front of a locomotive, automobile, or other vehicle.…

A light framework covered with cloth, plastic, or paper, designed to be flown in the wind at the end of a long string

Pentagonal Kite

A light framework covered with cloth, plastic, or paper, designed to be flown in the wind at the end…

A tubular instrument equipped with a light and used to examine the interior of the urinary bladder and ureter.

Scientist Cystoscope

A tubular instrument equipped with a light and used to examine the interior of the urinary bladder and…

An electric light in which a filament is heated to incandescence by an electric current.

Incandescent Bulb

An electric light in which a filament is heated to incandescence by an electric current.

An often portable case with transparent or translucent sides for holding and protecting a light.

Lighting Lantern

An often portable case with transparent or translucent sides for holding and protecting a light.

A light fixture or luminaire is an electrical device used to create artificial light.

Lighting Fixture

A light fixture or luminaire is an electrical device used to create artificial light.

An artificial source of visible illumination.

Candle Lamp

An artificial source of visible illumination.

Lampshades are a fixture that covers the lightbulb on a lamp to diffuse the light it emits. Conical, cylindrical and other forms on floor-, desk- or table top-mounted as well as suspended lamp models are the most common and are made in a wide range of materials.

Lamp Shade

Lampshades are a fixture that covers the lightbulb on a lamp to diffuse the light it emits. Conical,…

Any of various devices furnishing artificial light, as by electricity or gas. Cf. fluorescent lamp, incandescent lamp.

Incandescent Lamp

Any of various devices furnishing artificial light, as by electricity or gas. Cf. fluorescent lamp,…

A piece of furniture holding one or more electric light bulbs

Portable Lamp

A piece of furniture holding one or more electric light bulbs

the term light hull is used to describe the outer hull of a submarine, which houses the pressure hull, providing hydro dynamically efficient shape

Submarine Hull

the term light hull is used to describe the outer hull of a submarine, which houses the pressure hull,…

Plaything consisting of a light frame covered with tissue paper; flown in wind at end of a string

Plane Kite

Plaything consisting of a light frame covered with tissue paper; flown in wind at end of a string

An illustration of an arc electric lamp or an arc lamp which produces light by an electric arc.

Arc Electric Lamp

An illustration of an arc electric lamp or an arc lamp which produces light by an electric arc.

Blowtorch: a burner that mixes air and gas to produce a very hot flame

Flame Torch

Blowtorch: a burner that mixes air and gas to produce a very hot flame

A burner that mixes air and gas to produce a very hot flame

Electric Torch

A burner that mixes air and gas to produce a very hot flame

Device used for contact printing that holds a negative against the photographic paper. The paper is exposed by light from an external light

Printing Frame

Device used for contact printing that holds a negative against the photographic paper. The paper is…

Equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)

Photographic Camera

Equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and…

A lamp that burns illuminating gas

Gas Lamp

A lamp that burns illuminating gas

Lamp that generates light by heating a filament.

Incandescent Lamp

Lamp that generates light by heating a filament.

Wire inside an incandescent light bulb that produces light.

Lighting Filament

Wire inside an incandescent light bulb that produces light.

Instrument made of convex glass, used to magnify

Magnifying Glass

Instrument made of convex glass, used to magnify

A lamp supported on a lamppost; for illuminating a street

Street Lamp

A lamp supported on a lamppost; for illuminating a street