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Light pillars in London, Ontario, Canada. A light pillar or ice pillar is an atmospheric optical phenomenon in which a vertical beam of light appears to extend above and/or below a light source. The effect is created by the reflection of light from tiny ice crystals that are suspended in the atmosphere or that comprise high-altitude clouds (e.g ...
Cold calling. Cold calling is the solicitation of business from potential customers who have had no prior contact with the salesperson conducting the call. [ 1][ 2] It is an attempt to convince potential customers to purchase either the salesperson's product or service. Generally, it is referred as an over-the-phone process, making it a source ...
A solar flare is a relatively intense, localized emission of electromagnetic radiation in the Sun's atmosphere. Flares occur in active regions and are often, but not always, accompanied by coronal mass ejections, solar particle events, and other eruptive solar phenomena. The occurrence of solar flares varies with the 11-year solar cycle.
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A solar power tower consists of an array of dual-axis tracking reflectors ( heliostats) that concentrate sunlight on a central receiver atop a tower; the receiver contains a heat-transfer fluid, which can consist of water-steam or molten salt. Optically a solar power tower is the same as a circular Fresnel reflector.
William “Bill” Klages, a television lighting design pioneer and seven-time Emmy winner, died in Santa Monica, Calif., on July 7, his son Jonathan Klages confirmed. He was 97. Klages won one ...
A solar thermal collector collects heat by absorbing sunlight. The term "solar collector" commonly refers to a device for solar hot water heating, but may refer to large power generating installations such as solar parabolic troughs and solar towers or non- water heating devices such as solar cookers or solar air heaters. [ 1]