For the camera, a laser pulse is fired at a wall, and the impact of hitting the wall causes the particles of light to scatter.
More modern versions of the tool add in a laser beam projector, which allows builders to level out the device and "draw" a long line of light across a wall, indicating an exactly level surface.
Parts of inexplicable circles, drawn or incised on the light-colored wall behind him, give an air of happenstance to his position.
The trail begins with two hours of a light track until you reach the Carrasqueira, a steep wall of stone crossed with the use of ropes and helmets.
These are shown in the car park 14 floors below street level, accessible only by lift, as if buried in Mayfair's subconscious, and lit by five wall-size light boxes showing an enlarged detail of horses legs, taken from Piero della Francesca's Arezzo Fresco Cycle.
WSJ: London Artists and Curators Ponder the Unconventional With Unique Spaces
His windows face south, and through the murky light of a damp late afternoon the towers of Wall Street were barely visible.
To be sure, Spitzer deserves credit for shining light on the some of the seamier corners of Wall Street that the U.S. Securities and Exchange Commission was too myopic or compromised to clean out itself.
Feature photography: Javier Manzano, a free-lance photographer, for his extraordinary picture distributed by Agence France-Presse of two Syrian rebel soldiers tensely guarding their position as beams of light stream through bullet holes in a nearby metal wall.
Situated on a busy corner in cookie-cutter-home-laden, Bethesda, Maryland, ribbons of wall and glass surrounding a central courtyard flood the unconventional dwelling with light.
Andrew Scott, prosecuting, told the court how a female student had completed an eight-minute session in a cubicle at the salon and was getting dressed when she spotted the red light of Graves' camcorder shining through a gap in the wall.
Throughout, the defining characteristics are expansiveness and light: Ceilings soar to double and triple height, and wherever a wall could be made of glass, it was.
This incident brings to mind a lesser-known fact about the Hamptons: it's a place where conservative Wall Street tycoons have long co-existed with artists, many of whom love the delicate, ever-changing light that results from the region being almost entirely surrounded by sea.
European shares closed lower on Friday on what was a relatively light day of trading due to the American Fourth of July holiday and the closure of trading on Wall Street.
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