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Topic: Virtual Light

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	CULTURE MACHINE: 5 the E-issue, C Vasseleu
		Rather than an indirect light, the light of small-scale optics is a phantom light that recuperates something of an immediate visuality within the sightless realm of physical optics, where speed overrides and automatically re-defines (without regard for phenomenal vision) the interval of perception.
		Because light in computer graphics is not recorded by the same means by which the contact of light with a photosensitive surface is recorded, the lighting of objects and scenes is not calculated in the same way.
		Merleau-Ponty describes lighting as the condition for light to appear as a neutral property common to all visibles: 'neither colour nor, in itself, even light, it is anterior to the distinction between colours and luminosities.
	culturemachine.tees.ac.uk /Cmach/Backissues/j005/Articles/CVasseleu.htm (6565 words)

	RADIANCE Virtual Sources
		We therefore introduce "virtual" light sources that do not exist in reality, but are used during the calculation to direct shadow rays in the appropriate directions to find reflected or otherwise transferred light sources.
		This approach is essentially the same as the "virtual worlds" idea put forth by Rushmeier [18] and exploited by Wallace [24], but it is only carried out for light sources and not for all contributing surfaces.
		To minimize the creation of useless virtual light sources, we check very carefully to confirm that the light in fact has some free path between the source and the reflecting surface before creating the virtual source.
	radsite.lbl.gov /radiance/papers/sg94.1/virtual.html (638 words)

	[No title] (Site not responding. Last check: 2007-10-03)
		Additionally, the present invention relates to a system and method that provide a virtual image of the topographic surface of the cornea that may be combined with virtual components of the optical system to determine the extent of corneal ablation required to achieve a positive effect on the optical properties of the eye.
		After creation of a virtual ideal eye structure, a virtual image or the image of the calculated topographic surface is connected or superimposed on the virtual ideal eye structure and displayed on the graphics processing unit.
		For a virtual ablation procedure, a cut or removal of tissue caused by the virtual instrument is monitored by tracking the tip of the instrument and the virtual surface is reshaped to correspond to the virtual tissue removal.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/77739.011018&ELEMENT_SET=DECL (5252 words)

	Bridge trilogy - Wikipedia, the free encyclopedia
		The trilogy derives its name from the San Francisco-Oakland Bay Bridge, which was abandoned in an earthquake and has become a massive shanty town, and a site of improvised shelter.
		Another recurring character is the "virtual idol" Rei Toei, an AI pop star.
		The Bridge trilogy incorporates elements of William Gibson's recurring exploration of the intersection of technology, traumatic change, and cyborg self perceptions.
	en.wikipedia.org /wiki/Virtual_Light (598 words)

	Przemyslaw Moskal
		A video camera detects the movement of the viewer who waves a glowing stick; the changing physical light controls the virtual light and moving structures in the virtual space projected in front of the viewer.
		The viewer can experience direct control over the virtual world of K-Drons by using physically disconnected source of light, which is tracked by a camera, analyzed in Director 8.5 and converted into an interactive system, which reacts to the movement of the light.
		When the viewer waves a glowing stick slowly, he or she controls the position of the virtual light, when the viewer waves the glowing stick quickly, the virtual structures begin to animate in random positions.
	www.laksom.com /artworks_VRKL.html (318 words)

	Light Fantastic — Virtual Finland
		But to use a well-worn cliché, there is light at the end of the tunnel.
		“Light placed upon a pedestal,” is how Koskinen describes the Lantern, which was part of a larger series commissioned by iittala several years ago.
		Many of the companies I design lights for are international; the design language I use is very modern and fresh and not tied to a specific culture,” says Koskinen, who designs lights and lamps for Italy’s O luce, Spain’s Marset, and is currently at work on a product for a Japanese company.
	virtual.finland.fi /netcomm/news/showarticle.asp?intNWSAID=32083 (796 words)

	Light Net Virtual Center
		Light Net, Inc. is not connected with the group, "Lambat Liwanag" (a literal tagalog translation for Light Net) or any other organizations with ideological leanings.
		Light Net is not a front for SocDems, NatDems or blocks with political agendas that export their teachings to campuses in the form of environmental or pseudo-spiritual advocacies.
		Light Net servers who have met or associated with Mang Mike cannot help but have a heavy heart with his passing.
	www.lightnetonline.org (655 words)

	Faster Than Light
		However, it is meaningless to say that the universe is expanding faster than light because the rate of the expansion is measured by Hubble's constant alone which does not even have the units of speed.
		Nevertheless, the modern interpretation is that the speed of light is constant in general relativity and this statement is a tautology given that standard units of distance and time are related by the speed of light.
		When a gravitational lens bends the light coming from a distant galaxy, the light coming round the galaxy on one side reaches us later than light which left at the same time and went round the other side.
	math.ucr.edu /home/baez/physics/Relativity/SpeedOfLight/FTL.html (5278 words)

	Some Frequently Asked Questions About Virtual Particles
		Now, consider a virtual photon that comes from the particle on the right and is absorbed by the particle on the left.
		This is because of the propagation of virtual quanta of the F field, represented by the diagonal lines.
		The notion of virtual particles mediating static forces comes from perturbation theory, and if there is one thing we know about quantum gravity, it's that the usual way of doing perturbation theory doesn't work.
	math.ucr.edu /home/baez/physics/Quantum/virtual_particles.html (3494 words)

	HyperFlight. Entering the virtual domain: Light, electron, virtual energy
		Light speed instantly adopts to a new medium such as glass and light instantly adapts to the medium of ether.
		This explains that light propagation is not a function of the speed of the light source that introduces light into the medium.
		Any component of light (branched or not) will propagate at lightspeed once light leaves its source and regardless of the velocity (speed and direction) the light source may be going.
	www.hyperflight.com /roadmap.htm (588 words)

	Virtual Light Lab
		Virtual Light Lab software allows lighting designers, teachers, or students to experiment with light, shadow, color composition, and cue timing in a simulated lighting studio.
		Moving a light or changing a color is as simple as dragging a light icon or a color swatch with the mouse.
		Virtual Light Lab is fast and easy to use: highly realistic images are displayed immediately and there is no complicated 3D drawing system to learn.
	www.westsidesystems.com /vll/vll.html (404 words)

	Olympus Microscopy Resource Center: Virtual Microscopy: Polarized Light Interactive Java Tutorials
		Polarized light microscopy is a useful method to generate contrast in birefringent specimens and to determine qualitative and quantitative aspects of crystallographic axes present in various materials.
		The virtual microscope stage is graduated in 10 degree increments and allows rotation through a full 360 degree turn of the sample.
		As the sample is rotated, birefringent elements of the sample undergo intensity changes (from brilliantly illuminated through total extinction) that reflect their orientation with respect to the virtual microscope polarizer and analyzer.
	www.olympusmicro.com /primer/virtual/virtualpolarized.html (471 words)

	Vibrant 3D - Core System: CMovieLight Class Reference (Site not responding. Last check: 2007-10-03)
		In this system the distinction between types of lighting is maintained within the scope of this class.
		Due to the peculiar nature of light implementations this design is biased towards the openGL model, which allows an individual light to contribute a number of parameters to the scene.
		Gt the flag that indicates this is an infinitly distant light.
	www.vibrant3d.com /technology/coredocs/classCMovieLight.html (428 words)

	Compare Prices and Read Reviews on Virtual Light at Epinions.com (Site not responding. Last check: 2007-10-03)
		When Virtual Light was released back in 1993, I was there within the week to pay full retail for the hardcover and devour it with my usual relish.
		With Virtual Light, he hits way too close to the present for the story to be very believable.
		Virtual Light would have been a disappointing read no matter who the author was, but the fact that it is Gibson makes it a staggering disappointment.
	www.epinions.com /content_173867175556 (832 words)

	Virtual Light by William Gibson
		Virtual Light is the first in the new line of Gibson's novels, set in a more humane future than his earlier cyberpunk novels.
		Virtual Light contains post-apocalyptic anarchy, protagonists immersed in and dealing with this anarchy, shadowy evil power structures which threaten to wreck them at every turn, memorable supporting characters with one or two gimicks, interesting technological gadgetry and effects, and just a general attitude that says "don't mess wit me, monkey-man!
		So he moves on to take an assignment under dubious auspices, to find and return a pair of glasses (a pair of goggles with Virtual Light VR, which stimulates the optic nerve directly without "real" light) that were stolen in a party by a delivery girl - Chevette.
	project.cyberpunk.ru /idb/virtuallight.html (364 words)

	1.04: Street Cred
		NASA had the know-how, Leary had the rhetoric, and VPL had the hardware, but it was William Gibson's novel Neuromancer that gave a form and street-level language to the shifting cultural paradigms that birthed cyber-culture (and is partially responsible for the spontaneous generation of, among other artifacts, the 'zine in your hands).
		In Virtual Light, his first solo novel in five years, Gibson reworks many of the themes common to his Sprawl books - the world dominance of multinational corporations, media saturation, the commodification of all aspects of life and, of course, cyberspace - with some new nuances.
		Virtual Light is a bold step - a composite of his most clearly drawn characters with his most graceful evocation of the future yet.
	www.wired.com /wired/archive/1.04/streetcred.html?pg=3 (275 words)

	New attack sheds light on virtual machine security flaws - ZDNet UK News
		A Princeton University student has shed light on security flaws in Java and.Net virtual machines using a lamp, some known properties of computer memory and a little luck.
		Virtual machines are software programs that emulate a virtual computer entirely in the host computer's memory.
		Another feature of such virtual machines is that they keep applets contained to a software "sandbox"--preventing them from affecting the data on the computer.
	news.zdnet.co.uk /business/0,39020645,2134662,00.htm (805 words)

	TG Pack 1
		You define the light source within the shader, with control over the light’s type, position, colour, fall-off, and more, making the virtual light more flexible than a trueSpace light in several ways.
		TG Virtual Light can be used to create a range of effects, which would be time consuming or impossible to set up using trueSpace lighting, such as rim lighting, lighting from a “sky dome”, and a scanning electron microscope effect.
		Light source can be defined in the scene space, or set to follow the camera.
	www.tmgcgart.com /ShaderLab/html/tg_pack_1.htm (901 words)

	Virtual Light Meter
		ASTM method E430 specifies that haze is a measure of the fraction of light reflected in the off-specular direction to that reflected in the specular direction.
		This new virtual light meter is essentially a customized integration tool, using numerical quadrature of the specified BRDF model over an adaptively subdivided source and receptor aperture (see Figure 5 below) to compute the final standard appearance value.
		In addition to being able to calculate the current standards, the virtual light meter can be customized for other measurements.
	math.nist.gov /~FHunt/appearance/meter.html (555 words)

	Amazon.co.uk: Virtual Light: Books (Site not responding. Last check: 2007-10-03)
		Virtual Light is set in a near future San Francisco and has an ordinary plot whereby someone gets hold of an item they shouldn't have, and people in power want it back.
		In this case it is a pair of sunglasses that have the ability to display virtual light - an overlay on normal vision.
		The first Gibson book I read was Virtual Light, and I have to agree with one of the other reviews here: at the time, it seemed rushed, too flaky, too insubstantial to take in.
	www.amazon.co.uk /exec/obidos/ASIN/0140157727 (733 words)

	Ponce de Leon Inlet Light Station - Virtual Tour
		Learn what life was like on a remote peninsula more than 115 years ago, and marvel at the courage of the lighthouse keepers and their families.
		You will see how the light station looked when it was built, and what it looks like now in its restored state as a National Historic Landmark.
		When it was built, the Light Station was an outpost of sophisticated technology in a remote part of the country where life was rough and primitive.
	www.ponceinlet.org /tours.html (276 words)

	Virtual Lighting Design Lab
		This page is an experiment in using the web to facilitate the visualization of a lighting design for the stage.
		It uses the program Radiance to generate images of selected lighting angles.
		The in-house development of virtual control consoles that mimic the consoles found in the lab and in campus theatres enables the designer to quickly experiment with Intensity, Color, and Form.
	dolphin.upenn.edu /~pacshop/lab/lab.html (139 words)

	Light A Candle - a guided, interactive ritual
		In many different traditions lighting candles is a sacred action.
		You may want to begin or end your day by the sacred ritual of lighting a candle on this website.
		Or you may want to light a birthday candle for a friend.
	www.gratefulness.org /candles/enter.cfm (93 words)

	Holy Hill Shrine - Virtual Candle (Site not responding. Last check: 2007-10-03)
		The light, a symbol of hope, reflects our belief in the power of prayer and the confidence and trust we have that Mary will intercede for us.
		Your vigil light represents your faith and perseverance in prayer.
		May Mary be honored and your intentions fulfilled by your silent prayer and vigil light.
	holyhill.com /virtualcandle.html (185 words)

	Atari Jaguar VLM
		Atari's Virtual Light Machine (VLM), was developed by Jeff Minter, as a sound to light hardware/software combo that was intrinsically part of the Jaguar CD add-on unit.
		It synthesized interactive abstract light patterns based on the audio data in the CD.
		It has 81 effects, and although it's not a documented feature, you'll be pleased to know that you can edit the effect settings on the VLM, although saving them is not an option, as this feature was used essentially for debugging.
	www.audiovisualizers.com /toolshak/vidsynth/jag_vlm/jag_vlm.htm (546 words)

	Light \| The WWW Virtual Library
		This page of the WWW Virtual Library covers all aspects of light microscopy, electron microscopy and other forms of microscopy.
		These pages are produced automatically from a topic map of the Virtual Library.
		These pages and the database © WWW Virtual Library 1991-latest update.
	vlib.org /Light (133 words)

	Fluorescent Light Path - Virtual Fluorescent Microscope - Wartburg Biology Department (Site not responding. Last check: 2007-10-03)
		The fluorescent microscope is used to visualize specimens that fluoresce, that is to say, emit light of a different color (always a higher wavelength) than the light absorbed by the specimen.
		The exciter filter in the cube is designed to allow specific wavelengths of UV light to pass though (those that are absorbed by the dye in use) which are reflected by the dichroic mirror and pass through the objective lens to illuminates the specimen (
		The light emitted from the specimen (
	www.wartburg.edu /biology/fluorescentmicro/fluoranim/fluoranimlightpath.html (387 words)

	Making Light: Virtual panel participation (Site not responding. Last check: 2007-10-03)
		The light would turn all purplish (like this prose) and all the chipmunks and petit squirrels would stare at me as I crash sobbing through the forest.
		Neil Armstrong was the virtual moderator who mediated behind the scenes between the Presidential Commission on the Challenger disaster and Richard Feynman, resulting in the compromise position of a majority report and a separate Feynman appendix report (which connected to his on-air demonstration of O-ring material, clamp-pliers, and glass of icewater).
		I mean that the USA is accelerating away from privacy at somewhere between 0.01 and 0.1 G and is fairly close to the speed of light.
	nielsenhayden.com /makinglight/archives/006036.html (14261 words)

	Virtual Light Lab: Help
		To get information on a light (beam angle, height, plan distance, front angle, elevation angle)...
		Drag a lamp from instrument storage to one of the 49 positions on the light grid,
		Drag the pattern from the light to the gobo storage area
	www.northern.edu /wild/th241/vllhlp.htm (547 words)

	A Virtual Light Field Approach to Global Illumination
		A type of light field data structure is used for propagating radiance outward from light emitters through the scene, accounting for any kind of L(SD)* light path.
		The light field employed is constructed by choosing a regular point subdivision over a hemisphere, to give a set of directions, and then corresponding to each direction there is a rectangular grid of parallel rays.
		Each rectangular grid of rays is further subdivided into rectangular tiles, such that each tile references a sequence of 2D images containing colour values corresponding to the outgoing radiances of surfaces intersected by the rays in that tile.
	csdl2.computer.org /persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/proceedings/cgi/2004/2171/00/2171toc.xml&DOI=10.1109/CGI.2004.1309198 (243 words)

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