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The word infrared means below red. It comes from the Latin word infra (meaning below) and the English word red. (Infrared light has a frequency below the ...

2009123 — The result is a bright image against a dark background. Since little light actually falls on the specimen, dark-field illumination shows less ...

Liquid light shows (or psychedelic light shows)[not verified in body] are a form of light art that surfaced in the early 1960s as accompaniment to electronic music and avant-garde theatre performances. They were later adapted for performances of rock or psychedelic music.

Polarization of light is a property that applies to turning waves that shows the geometrical blooming of the oscillations. In a turning wave, the way of the ...

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Leading names included Bill Ham, The Joshua Light Show/Joe's Lights/Sensefex located in NY, Tony Martin (SF, NYC), Elias Romero (SF), Mike Leonard (lights for Pink Floyd) (UK),[1] The Heavy Water Light Show,[2] Mark Boyle's Lights/Joan Hill (UK),[3][4] Marc Arno Richardson’s Diogenes Lanternworks (SF, Denver),[5] Lymbic System (Mark Hanau) (UK),[6] Glen McKay's[7] Headlights, The Pig Light Show (NY),[8][9] Lights by Pablo (NY), The Brotherhood of Light (SF),[10] Little Princess 109 (SF),[11] LSD,[12] Ed's Amazing Liquid Light Show,[13] Abercrombe Lights (SF),[14] the Single Wing Turquoise Bird light show (California),[15][16][17] Sector (Alberto Zanotti) and Anna Patti (Italy). The Incredible Liteshow was run by Gary Gand in Chicago. Gand and his wife Joan went on to pioneer electronics in the Rock n Roll industry becoming the first Moog synthesizer dealer in the US and later the first Apple computer dealer in the music industry.

Light Bulbs, Lighter Fluids, Lighters and Matches, Lighting Equipment, Liquid ... Telescopes or Binoculars or Microscopes or Magnifying Glasses, Television ...

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While the shows on both sides of the Atlantic had much in common they differed in two important ways. First, the American shows tended to be larger, with seven operators and over thirty projectors not being exceptional. In contrast, the shows in England and the continent of Europe seldom had more than three operators and ten or so projectors. Second, American shows were generally built around the overhead projector with the liquids in large clock cover glasses. Shows in England and Europe, in contrast, used modified 2" sq. slide projectors which had their dichroic heat filters (one or both) removed and employed two three or even four layers of slide cover glasses with one or two liquids (oil and water based, in the early days) between the glasses. Alternatively different coloured water based dyes were used in each layer, which slowly boiled producing pulsing vapour bubbles when exposed to the heat of the projector lamp with the heat filters removed. Consequently, randomly pulsing and moving blobs of colour were projected on the screen creating the light show. Before the projected layers totally dried out a new slide would be switched in the projector slide holder, meanwhile the old glass would be removed, cleaned and refurbished with new dyes and the projection process would continue. The surface tension of the liquids largely retained the mixtures between the glass slides, but the process was nevertheless very messy indeed and operators had their hands almost permanently stained by the dyes. A popular choice of colored liquids for light shows was Flo-Master ink, a product developed for use in permanent marker pens, also Vitrina which was intended for painting on glass. While these inks were very vivid they also had the problem of staining the operator's hands very deeply.

Liquid light guides are clearly superior to light guides made of silica fiber bundles by the very nature of their design. A liquid light guide is much like a ...

In this month's column, we will take a look at the uses of these handy lights and talk about ways to make them more effective and less glaring.

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2022524 — Black light is a type of ultraviolet light – specifically, ultraviolet A (UVA) light, where it emits ultraviolet radiation in the UVA band.

A ring light is an easy-to-use multipurpose lighting tool that enables users to obtain a source of uniform light that comes directly from the point of view of ...

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The style and content of each show were unique but the object of most was to create a tapestry of multimedia live event visual amplification elements that were seamlessly interwoven, in a constant state of flux and above all, reflected the music the show was attempting to depict in emotional visual terms.

Nov 18, 2020 — Earlier microscopes used mirrors that reflected light into the base of the microscope instead of halogen bulbs as their source of illumination.

Liquid light shows surfaced on both sides of the Atlantic around 1966 and were an integral part of the psychedelic music scene well into the seventies. Shows could be as simple as a single operator and two or three modified slideprojectors or overhead projectors and a couple of color wheels or as complex as shows with ten or more operators, 70 plus projectors (including liquid slide, liquid overhead, movie and still image models plus a vast array of highly advanced (for the time) special effects equipment).

Two groups that are associated with the light shows they worked with above all others are Jefferson Airplane and the Headlights light show in America and Pink Floyd with light artist Mike Leonard in England.[1]

The angle at which the light is reflected depends on the angle it hits the mirror, and a ray diagram can be used to show the path of the light rays.