Results 161 to 170 of about 1,225 (211)
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International Journal of Computational Geometry & Applications, 1997
Given three angles summing to 2π, given n points in the plane and a tripartition k1 + k2 + k3 = n, we can tripartition the plane into three wedges of the given angles so that the i-th wedge contains ki of the points. This new result on dissecting point sets is used to prove that lights of specified angles not exceeding π can be placed at n fixed ...
Bose, P. +5 more
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Given three angles summing to 2π, given n points in the plane and a tripartition k1 + k2 + k3 = n, we can tripartition the plane into three wedges of the given angles so that the i-th wedge contains ki of the points. This new result on dissecting point sets is used to prove that lights of specified angles not exceeding π can be placed at n fixed ...
Bose, P. +5 more
openaire +3 more sources
Computer aids for floodlighting design
Applied Ergonomics, 1983The lighting engineer is faced with many problems when specifying floodlighting schemes, not least the large amount of computation required to evaluate each potential solution in terms of illuminance grids and isolux contours across the area of interest. Traditionally these kinds of evaluations have been carried out on (programmable) calculators with a
K, Case, C A, Blunsdon, K, Austin
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Transactions of the Illuminating Engineering Society, 1964
The fundamental problems in lighting for football are re-examined, and the theoretical considerations analysed. Two alternative systems which have proved successful in practice are described, and some general design considerations are discussed. A simplified method for the calculation of the floodlight training plan for a high-tower installation is ...
G. M. Dorey, M. W. Peirce, W. A. Price
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The fundamental problems in lighting for football are re-examined, and the theoretical considerations analysed. Two alternative systems which have proved successful in practice are described, and some general design considerations are discussed. A simplified method for the calculation of the floodlight training plan for a high-tower installation is ...
G. M. Dorey, M. W. Peirce, W. A. Price
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Electronics and Power, 1985
Our second specialised application of lighting, and a science in itself is floodlighting. With applications ranging from artistic illumination of historical buildings to the lighting of sports grounds with sufficient quality for colour-TV transmissions, the criteria facing the floodlighting engineer are many and ...
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Our second specialised application of lighting, and a science in itself is floodlighting. With applications ranging from artistic illumination of historical buildings to the lighting of sports grounds with sufficient quality for colour-TV transmissions, the criteria facing the floodlighting engineer are many and ...
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Transactions of the Illuminating Engineering Society, 1950
Floodlighting is defined as “the lighting, usually by projection, of the whole of a scene or object to a level considerably greater than that of its surroundings.” The paper deals mainly with the application of floodlighting out of doors with particular reference to the spectacular floodlighting of buildings.
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Floodlighting is defined as “the lighting, usually by projection, of the whole of a scene or object to a level considerably greater than that of its surroundings.” The paper deals mainly with the application of floodlighting out of doors with particular reference to the spectacular floodlighting of buildings.
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Illumination of Orthogonal Polygons with Orthogonal Floodlights
International Journal of Computational Geometry & Applications, 1998We provide the first tight bound for covering an orthogonal polygon with n vertices and h holes with vertex floodlights (guards with restricted angle of vision). In particular, we provide tight bounds for the number of orthogonal floodlights, placed at vertices or on the boundary, sufficient to illuminate the interior or the exterior of an orthogonal ...
James Abello +3 more
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Floodlight for illuminating a semicircular vault
Applied Optics, 1997A method of designing the profile of an asymmetric floodlight reflector for illuminating semicircular vaults with a constant illuminance is described. Only directional reflector surface reflection was assumed, and the location of the floodlight with respect to the illuminated surface was explicitly defined.
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Aircraft Engineering and Aerospace Technology, 1951
A CONSIDERABLE number of our home readers, at any rate, no doubt attended the meetings at which the symposium of papers on high‐temperature steels and alloys, arranged by the IRON AND STEEL INSTITUTE, were read on February 21 and 22, and some of them will have taken advantage of the offer of subscribing in advance at a reduced price for the bound ...
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A CONSIDERABLE number of our home readers, at any rate, no doubt attended the meetings at which the symposium of papers on high‐temperature steels and alloys, arranged by the IRON AND STEEL INSTITUTE, were read on February 21 and 22, and some of them will have taken advantage of the offer of subscribing in advance at a reduced price for the bound ...
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IEEE Transactions on Industry Applications, 1977
Since the onset of the energy crisis, many floodlights have been dimmed or removed. The cost conscious building owners are more concerned with the energy costs than losing beauty and elegance of the buildings. In the last several years, many highly efficient light sources have sprung up on the market.
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Since the onset of the energy crisis, many floodlights have been dimmed or removed. The cost conscious building owners are more concerned with the energy costs than losing beauty and elegance of the buildings. In the last several years, many highly efficient light sources have sprung up on the market.
openaire +1 more source
Floodlighting of Pedestrian Crossings
Transactions of the Illuminating Engineering Society, 1962It is proposed that pedestrian crossings which require supplementary lighting be floodlit from the direction of the oncoming traffic, so that motorists see the pedestrians illuminated directly. Glare can be avoided by using a light beam of sharp cut-off, and by shielding the primary light source.
R. G. Giovanelli +2 more
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