How To Install Sun Tube Lights' title='How To Install Sun Tube Lights' />I tore out your Solar Tube advertisement from the, I think it was called, Adventure Life magazine while waiting in my doctors office and it might be what my daughter.What Would Happen If You Actually Walked on the Sun UpdatedWe just realized its the 2.Smash Mouths Walkin on the Sun, a song about not being a normie or giving into ephemeral fads like soul patches.Smash Mouth never did that.Walkin on the Sun is also the title of the official Smash Mouth biography, which is very good according to the 1.Amazon.On this special Tuesday edition of Giz Asks, we spoke to scientists about what would happen if people actually did walk on the Sun.How To Install Sun Tube Lights' title='How To Install Sun Tube Lights' />Unsurprisingly, no one would survive a stroll on a hot ball of plasma that can reach 2.Fahrenheit 1.Celsius.Summer Ash.Astrophysicist and Director of Outreach for the Department of Astronomy at Columbia University.Whats the surface of the sun like Sooooooo, theres not really a surface to stand onNo solid boundary.How close could a person get to the sun, realistically before burning up A person in space would just be screwed no matter how closefar they were.I think its just more that space suits arent designed for long term exposure so in addition to thinking about when the spacesuit might start to burn up, way before that youll just be way too uncomfortably hot inside sweating and such.Like your own private sauna hell.You would die from cosmic rays first around 4.Earth to the Sun in your spacesuit.Scott Mcintosh.Director of NCARs High Altitude Observatory.Why is Walkin on the Sun actually pretty timely right now, scientifically speaking The Parker Solar Probe is going to be the first piece of human engineering to get that close to the sun.Its gonna actually touch the suns corona.Itll be cool Actually, it wont be cool, itll be hot.So you mean Grammy nominated recording artists Smash Mouth liedYou cant actually walk on the Sun Theres no bloody surface of the sun Its not possible because theres no literal surface.Tanya Harrison.Planetary scientist, Director of Research for Arizona State Universitys Space Technology and Science Initiative.Why is it a bad idea to walk on the sun The surface of the sun is about 6.C.Tennis shoes have melted in the summer heat in places like Texas before, so needless to say they probably wont last long on the sun.Whats the Suns corona and how hot does it getThe corona is the wispy outermost part of the suns atmosphere.Oddly however, unlike the Earth where the temperature of the atmosphere decreases with height at least until you reach the exosphere, the corona is actually by far the hottest part of the sun.The surface is about 6.C, while the corona can exceed 1 million CWhy this is the case is still somewhat of a stellar mystery.The corona is so dim compared to the disk of the sun that we cant see it with the naked eye although you shouldnt be staring directly at the sun anywayUNLESS its during a total solar eclipse.Then grab your eclipse glasses and stare away at the beauty of the corona Smash Mouth.Recording artists.What do you think would happen if a person actually walked on the Sun Smash mouth has not responded to Gizmodos repeated request for comment.We will update this post if and when we hear back.UPDATE Smash Mouth has responded to Gizmodo with the following tweet Do you have a question for Giz Asks Email us at tipboxgizmodo.Fluorescent lamp Wikipedia.Typical F7.T1. 2 1.W bi pin lamp used in tanning beds.The Hg symbol indicates that this lamp contains mercury.In the US, this symbol is now required on all fluorescent lamps that contain mercury.One style of lamp holder for T1.Casate Y Se Sumisa Resumen Del Libro De Los Hechos on this page. Chopper Xp Dvd Cutter Download there. T8 bi pin fluorescent lamps.Inside the lamp end of a preheat bi pin lamp.In this lamp the filament is surrounded by an oblong metal cathode shield, which helps reduce lamp end darkening.A fluorescent lamp, or fluorescent tube, is a low pressure mercury vaporgas discharge lamp that uses fluorescence to produce visible light.An electric current in the gas excitesmercury vapor, which produces short wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps.The typical luminous efficacy of fluorescent lighting systems is 5.Fluorescent lamp fixtures are more costly than incandescent lamps because they require a ballast to regulate the current through the lamp, but the lower energy cost typically offsets the higher initial cost.Compact fluorescent lamps are now available in the same popular sizes as incandescents and are used as an energy saving alternative in homes.Because they contain mercury, many fluorescent lamps are classified as hazardous waste.The United States Environmental Protection Agency recommends that fluorescent lamps be segregated from general waste for recycling or safe disposal, and some jurisdictions require recycling of them.HistoryeditPhysical discoverieseditFluorescence of certain rocks and other substances had been observed for hundreds of years before its nature was understood.By the middle of the 1.One of the first to explain it was the Irish scientist Sir George Stokes from the University of Cambridge, who named the phenomenon fluorescence after fluorite, a mineral many of whose samples glow strongly due to impurities.The explanation relied on the nature of electricity and light phenomena as developed by the British scientists Michael Faraday in the 1.James Clerk Maxwell in the 1.Little more was done with this phenomenon until 1.German glassblower Heinrich Geissler created a mercury vacuum pump that evacuated a glass tube to an extent not previously possible.Geissler invented the first gas discharge lamp, the Geissler tube, consisting of a partially evacuated glass tube with a metal electrode at either end.When a high voltage was applied between the electrodes, the inside of the tube lit up with a glow discharge.By putting different chemicals inside, the tubes could be made to produce a variety of colors, and elaborate Geissler tubes were sold for entertainment.More important, however, was its contribution to scientific research.One of the first scientists to experiment with a Geissler tube was Julius Plcker who systematically described in 1.Geissler tube.He also made the important observation that the glow in the tube shifted position when in proximity to an electromagnetic field.Alexandre Edmond Becquerel observed in 1.Geissler tube.He went on to apply thin coatings of luminescent materials to the surfaces of these tubes.Fluorescence occurred, but the tubes were very inefficient and had a short operating life.Inquiries that began with the Geissler tube continued as even better vacuums were produced.The most famous was the evacuated tube used for scientific research by William Crookes.That tube was evacuated by the highly effective mercury vacuum pump created by Hermann Sprengel.Research conducted by Crookes and others ultimately led to the discovery of the electron in 1.J.J. Thomson and X rays in 1.Wilhelm Roentgen.But the Crookes tube, as it came to be known, produced little light because the vacuum in it was too good and thus lacked the trace amounts of gas that are needed for electrically stimulated luminescence.Early discharge lampsedit.One of the first mercury vapor lamps invented by Peter Cooper Hewitt, 1.It was similar to a fluorescent lamp without the fluorescent coating on the tube, and produced greenish light.The round device under the lamp is the ballast.While Becquerel was interested primarily in conducting scientific research into fluorescence, Thomas Edison briefly pursued fluorescent lighting for its commercial potential.He invented a fluorescent lamp in 1.X rays, but although it received a patent in 1.As with a few other attempts to use Geissler tubes for illumination, it had a short operating life, and given the success of the incandescent light, Edison had little reason to pursue an alternative means of electrical illumination.Nikola Tesla made similar experiments in the 1.Edisons devices, no commercial success was achieved.Although Edison had lost interest in fluorescent lighting, one of his former employees was able to create a gas based lamp that achieved a measure of commercial success.In 1.Daniel Mc.Farlan Moore demonstrated lamps 2 to 3 meters 6.As with future fluorescent lamps, they were considerably more complicated than an incandescent bulb.After years of work, Moore was able to extend the operating life of the lamps by inventing an electromagnetically controlled valve that maintained a constant gas pressure within the tube.Although Moores lamp was complicated, was expensive to install, and required very high voltages, it was considerably more efficient than incandescent lamps, and it produced a closer approximation to natural daylight than contemporary incandescent lamps.From 1.Moores lighting system was installed in a number of stores and offices.Its success contributed to General Electrics motivation to improve the incandescent lamp, especially its filament.GEs efforts came to fruition with the invention of a tungsten based filament.The extended lifespan and improved efficacy of incandescent bulbs negated one of the key advantages of Moores lamp, but GE purchased the relevant patents in 1.These patents and the inventive efforts that supported them were to be of considerable value when the firm took up fluorescent lighting more than two decades later.At about the same time that Moore was developing his lighting system, another American was creating a means of illumination that also can be seen as a precursor to the modern fluorescent lamp.This was the mercury vapor lamp, invented by Peter Cooper Hewitt and patented in 1.US 6.US 8.Hewitts lamp glowed when an electric current was passed through mercury vapor at a low pressure.Unlike Moores lamps, Hewitts were manufactured in standardized sizes and operated at low voltages.The mercury vapor lamp was superior to the incandescent lamps of the time in terms of energy efficiency, but the blue green light it produced limited its applications.It was, however, used for photography and some industrial processes.Mercury vapor lamps continued to be developed at a slow pace, especially in Europe, and by the early 1.Some of them employed fluorescent coatings, but these were used primarily for color correction and not for enhanced light output.Mercury vapor lamps also anticipated the fluorescent lamp in their incorporation of a ballast to maintain a constant current.Cooper Hewitt had not been the first to use mercury vapor for illumination, as earlier efforts had been mounted by Way, Rapieff, Arons, and Bastian and Salisbury.Of particular importance was the mercury vapor lamp invented by Kch in Germany.This lamp used quartz in place of glass to allow higher operating temperatures, and hence greater efficiency.Although its light output relative to electrical consumption was better than that of other sources of light, the light it produced was similar to that of the Cooper Hewitt lamp in that it lacked the red portion of the spectrum, making it unsuitable for ordinary lighting.Neon lampseditThe next step in gas based lighting took advantage of the luminescent qualities of neon, an inert gas that had been discovered in 1.Neon glowed a brilliant red when used in Geissler tubes.By 1.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
November 2017
Categories |