Search results
Results from the WOW.Com Content Network
Luminous efficacy can be normalized by the maximum possible luminous efficacy to a dimensionless quantity called luminous efficiency.The distinction between efficacy and efficiency is not always carefully maintained in published sources, so it is not uncommon to see "efficiencies" expressed in lumens per watt, or "efficacies" expressed as a percentage.
Ultra-high-performance lamp. An ultra-high-performance lamp, often known by the Philips trademark UHP, is a high-pressure mercury arc lamp. [1] These were originally known as ultra-high-pressure lamps, [2] [3] because the internal pressure can rise to as much as 200 atmospheres when the lamp reaches its operating temperature.
Gerard Philips (1858–1942), founder. The Philips Company was founded in 1891, by Dutch entrepreneur Gerard Philips and his father Frederik Philips. Frederik, a banker based in Zaltbommel, financed the purchase and setup of an empty factory building in Eindhoven, where the company started the production of carbon-filament lamps and other electro-technical products in 1892.
For most audio applications more power is needed at low frequencies. This requires a high-power amplifier for low frequencies (e.g., 200 watts for 20–200 Hz band), lower power amplifier for the midrange (e.g., 50 watts for 200 to 1000 Hz), and even less the high end (e.g. 5 watts for 1000–20000 Hz).
Radiant intensity is used to characterize the emission of radiation by an antenna: [2], = (), where E e is the irradiance of the antenna;; r is the distance from the antenna.; Unlike power density, radiant intensity does not depend on distance: because radiant intensity is defined as the power through a solid angle, the decreasing power density over distance due to the inverse-square law is ...
In the 1950s and 1960s, full-body workouts were the normal way to train, and bodybuilders such as John Grimek (1940-41 Mr. America), Steve Reeves (Mr. America of 1947, Mr. World of 1948, and Mr. Universe of 1950), George Eiferman (Mr. America of 1948, and Mr. Universe of 1962), Reg Park (Mr. Universe of 1951, 1958, and 1965), and Leroy Colbert ...
Full-body workout is a type of exercise workout routine where the entire body is targeted in a single session. It is the opposite of a split workout routine , also known as split weight training or split routine, where different muscle groups are targeted on separate days.
Watt and the J. J. Watt Foundation host a Charity Classic, Run/Walk, Golf Outing, and Tailgate annually. [184] The Charity Classic is a softball game held at Constellation Field, in Sugar Land, Texas , in which Texans players participate in a game, and Home Run Derby to raise money for the foundation. [ 185 ]