• emit
  • Filament configurations such as the C13D (coiled, zig-zagged) emit far more light perpendicular to the zig-zag than parallel to it. (wikipedia.org)
  • oxygen
  • The lighter chalcogens, such as oxygen and sulfur, are rarely toxic and usually helpful in their pure form. (wikipedia.org)
  • Among the lighter chalcogens (oxygen and sulfur), the most neutron-poor isotopes undergo proton emission, the moderately neutron-poor isotopes undergo electron capture or β+ decay, the moderately neutron-rich isotopes undergo β− decay, and the most neutron rich isotopes undergo neutron emission. (wikipedia.org)
  • The amu without the "unified" prefix is an obsolete unit based on oxygen, which was replaced in 1961. (wikipedia.org)
  • The first form of elemental phosphorus to be produced (white phosphorus, in 1669) emits a faint glow when exposed to oxygen - hence the name, taken from Greek mythology, Φωσφόρος meaning "light-bearer" (Latin Lucifer), referring to the "Morning Star", the planet Venus (or Mercury). (wikipedia.org)
  • made
  • 25 mi) and made the lighthouse obsolete. (wikipedia.org)
  • This made it possible to turn the light in the direction of travel when the steering wheel was turned, and is now widely adopted technology. (wikipedia.org)
  • A traditional-styled European city bike includes a frame made of low-carbon high-tensile steel, black paint with chromed accessories, an opaque skirtguard, bottle dynamo, simple dynamo-powered lights, and either a single-speed or 3-speed internally geared hub. (wikipedia.org)
  • high
  • Student pilots in initial training may use the mnemonic, WHITE on WHITE - "Check your height" (or "You're out of sight", or "Higher than a kite") (too high) RED on WHITE - "You're all right" RED on RED - "You're dead" (too low) until they are used to the lights' meaning. (wikipedia.org)
  • world
  • The City Council of Wabash agreed to testing the lights and on March 31, 1880, Wabash became the "First Electrically Lighted City in the World" as a flood of light engulfed the town from four Brush Lights mounted atop the courthouse. (wikipedia.org)
  • white
  • Alternative light sources use phosphors or combinations of mono-chromatic LEDs (red, blue, green) to produce "white" light, giving significantly irregular spectral distributions which can result in color casts in photography and differences of color matching when compared to incandescent light or daylight. (wikipedia.org)
  • The ratio of white to red lights seen is dependent on the angle of approach to the runway. (wikipedia.org)
  • Above the designated glide slope a pilot will observe more white lights than red, at approaches below the ideal angle more red lights than white will be seen. (wikipedia.org)
  • For the optimum approach angle the ratio of white to red lights will remain equal throughout. (wikipedia.org)
  • The greater number of red lights visible compared with the number of white lights visible in the picture means that the aircraft is flying below the glideslope. (wikipedia.org)
  • To use the guidance information provided by the aid to follow the correct glide slope a pilot would manoeuvre the aircraft to obtain an equal number of red and white lights. (wikipedia.org)
  • Depending on the position of the aircraft relative to the specified angle of approach, the lights will appear either red or white to the pilot. (wikipedia.org)
  • The pilot will have reached the normal glidepath (usually 3 degrees) when there is an equal number of red and white lights. (wikipedia.org)
  • if an aircraft is above the glidepath, more white lights are visible. (wikipedia.org)
  • A street with lights was referred to as a white way during the early 20th century. (wikipedia.org)
  • Part of New York City's Broadway was nicknamed the Great White Way due to the massive number of electric lights used on theater marquees lining the street. (wikipedia.org)
  • This transformation is accelerated by light and heat, and samples of white phosphorus almost always contain some red phosphorus and accordingly appear yellow. (wikipedia.org)
  • beam
  • While it is common for the term headlight to be used interchangeably in informal discussion, headlamp is the term for the device itself, while headlight properly refers to the beam of light produced and distributed by the device. (wikipedia.org)
  • City
  • The first city to use electric street lights was Wabash, Indiana. (wikipedia.org)
  • Charles F. Brush of Cleveland, Ohio wanted to publicly test his new invention the "Brush Light" and needed a city to do so. (wikipedia.org)
  • A stadsfiets is considered to be a fully outfitted European city bike, distinguished by the following typical features: upright riding position, fully enclosed chaincase, skirtguard, O-lock, hub gearing, dynamo hub, manually operated small warning bell, and built-in lights. (wikipedia.org)
  • either
  • Anodic films can also be used for a number of cosmetic effects, either with thick porous coatings that can absorb dyes or with thin transparent coatings that add interference effects to reflected light. (wikipedia.org)
  • company
  • The word svetlina means light, while AD is an abbreviation of bg:акционерно дружество (aktsionerno druzhestvo) - the Bulgarian type of joint-stock company. (wikipedia.org)
  • standard
  • Svetlina luminaries stayed almost the same in the outside (because their design is considered both standard and aesthetic, while in the same time not being obsolete), but constantly changed in the inside. (wikipedia.org)
  • test
  • Although this test has become obsolete in analytical chemistry, the underlying reactions further illustrate the affinity of AsH3 for "soft" metal cations. (wikipedia.org)
  • system
  • An abbreviated system consisting of two light units can be used for some categories of aircraft operations. (wikipedia.org)
  • An earlier glideslope indicator system, the visual approach slope indicator (VASI) is now obsolete and was deleted from Annex 14 in 1995. (wikipedia.org)
  • automobile
  • firm called Pockley Automobile Electric Lighting Syndicate marketed the world's first electric car lights as a complete set in 1908, which consisted of headlamps, sidelamps and tail lights and were powered by an eight-volt battery. (wikipedia.org)
  • provide
  • It normally consists of four equi-spaced light units color-coded to provide a visual indication of an aircraft's position relative to the designated glideslope for the runway. (wikipedia.org)
  • form
  • During the 1950s, GE lit roadways with its Form 109 and, later, the popular Form 400. (wikipedia.org)
  • below
  • Under-cabinet light - mounted below kitchen wall cabinets Display Case or Showcase light - shows merchandise on display within an enclosed case such as jewelry, grocery stores, and chain stores. (wikipedia.org)
  • Street
  • Street light Stara Zagora Sliven Svetlina AD (Sliven) A Bulgarian catalogue entry for Svetlina AD (Sliven plant), including the compoany's address. (wikipedia.org)
  • similar
  • The middle chalcogens (selenium and tellurium) have similar decay tendencies as the lighter chalcogens, but their isotopes do not undergo proton emission and some of the most neutron-starved isotopes of tellurium undergo alpha decay. (wikipedia.org)