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Lighting |
Record 51 to 75 of 140 |
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Condensing Quadrant "Condensing Quadrant.—The fixed apparatus bbb, with spherical mirror behind, throws its rays directly through the angle of 90 degrees afa', while the supplementary rays falling on the straight c... |
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Cresset A cup of incombustible material mounted upon a pole or suspended from above, and serving to contain a light often made by burning a coil soaked in oil. ... |
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Differential Lens "Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of a... |
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Differential Lens "Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of a... |
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Differential Lens "Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of a... |
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Diminish Shadow "Since A is producing light and larger than object B, the shadow of B continuously shrinks to a single point at C." —Quackenbos 1859... |
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Dioptric Holophote "Perfect Form of Dioptric Holophote for an Oil Flame.—By combining the back prisms ga, hc just described with a semi-holophote abc subtending 180 degrees and a portion of the dioptric spherical ... |
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Dioptric Light "First Application of Total Reflexion to Fixed Lights. In this apparatus Fresnel substituted his totally reflecting prism p and lens R for Marcet's reflector, and thus distributed the whole light equ... |
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Dioptric Light "Dioptric Floating Light. Elevation." —The Encyclopedia Britannica, 1910... |
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Dioptric Light "Dioptric Floating Light. Horizontal Section." —The Encyclopedia Britannica, 1910... |
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Electric Lamp, Submarine An illustration of a submarine electric lamp with reflector.... |
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Electric Lamp, Submarine An illustration of a submarine electric lamp without reflector. A, Metal case containing electrical fittings; B, Glass globe and incandescent lamp; C, Stand, which also protects the globe; and D, Rin... |
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Electric Light, Tungsten Incandescent Lamp Tungsten incandescent lamp.... |
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Electricity, Incandescent Electrical incandescent light bulb.... |
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Figure, Candlestick This candlestick figure is of gilt parian and porcelain. ... |
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Figure, Candlestick This candlestick figure is of gilt parian and porcelain. ... |
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Flame A stream of burning vapor or gas; a blaze.... |
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Flame Parts "Flame. a, area of no combustion. b, area of partial combustion. c, area of complete combustion." -Foster, 1921... |
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Floating Lights "aa is the mast, b tackle hook, c, c brass flanges for fixing parts of lantern together, e and g weather guards, h plate glass front of lantern, i shutter by which lamps are trimmed, k lamps, l silver... |
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Fresnels Revolving Light "Fresnel's Revolving Light. —In this form of revolving light the central burner is surrounded by annular lenses L, and a compound arrangement of inclined trapezoidal lenses L' and plane silvered... |
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Fresnels Revolving Light "Fresnel's Revolving Light. —In this form of revolving light the central burner is surrounded by annular lenses L, and a compound arrangement of inclined trapezoidal lenses L' and plane silvered... |
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Fresnels Revolving Light "Fresnel's Revolving Light. —In this form of revolving light the central burner is surrounded by annular lenses L, and a compound arrangement of inclined trapezoidal lenses L' and plane silvered... |
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Fresnels Revolving Light "Fresnel's Revolving Light. —In this form of revolving light the central burner is surrounded by annular lenses L, and a compound arrangement of inclined trapezoidal lenses L' and plane silvered... |
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Gas light, electric "Electric gas lighting is often effected by sparks from the interrupted circuit of a voltaic battery, in which circuit is a 'kicking coil,' or by sparks from the secondary of an induction coil, or fro... |
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Gas-Chandelier This gas-chandelier is richly ornamented with a naturalistic design. It is a branched decorative ceiling mounted light fixture.... |
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Clipart ETC is a part of the Educational Technology Clearinghouse and is funded by various grants. Produced by the Florida Center for Instructional Technology, College of Education, University of South Florida. Email the project manager.