{"id":77870,"date":"2022-07-08T20:12:03","date_gmt":"2022-07-08T18:12:03","guid":{"rendered":"https:\/\/gahzly.com\/%d8%aa%d8%b7%d9%88%d8%b1-%d8%a7%d9%84%d8%a5%d8%b6%d8%a7%d8%a1%d8%a9-%d8%b9%d9%84%d9%8a-%d9%85%d8%b1-%d8%a7%d9%84%d8%aa%d8%a7%d8%b1%d9%8a%d8%ae-1\/"},"modified":"2023-02-01T18:55:48","modified_gmt":"2023-02-01T16:55:48","slug":"the-evolution-of-lighting-through-history","status":"publish","type":"post","link":"https:\/\/gahzly.com\/en\/\u0645\u0642\u0627\u0644\/the-evolution-of-lighting-through-history\/","title":{"rendered":"The evolution of lighting through history 1"},"content":{"rendered":"<h2 style=\"text-align: center;\"><strong><span style=\"vertical-align: inherit;\"><span class=\"\" style=\"vertical-align: inherit;\">The evolution of lighting through history <\/span><\/span><\/strong><\/h2>\n<figure id=\"attachment_73022\" aria-describedby=\"caption-attachment-73022\" style=\"width: 860px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73022 size-full\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e.jpg\" alt=\"The evolution of lighting through history 1\" width=\"860\" height=\"645\" title=\"l\"><figcaption id=\"caption-attachment-73022\" class=\"wp-caption-text\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">History of Lighting Technology 1: Prehistoric Times, 2-3: Egyptian (c. 400 BC), 4-5: Assyrian, 6-13: Roman, 14-15: Carthaginian, 16-17: Merovingian, 19-20: 11th century, 21: 12th century, 22: 13th century, 23-24: 14th century, 25-27: 15th century, 28: 16th century, 29: 17th century, 30-31: 8th century Xen, 32-54: The Nineteenth and Twentieth Century<\/span><\/span><\/figcaption><\/figure>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The advent of reliable and energy efficient lighting in the home and in our workplaces has been and continues to play a major role in the modern way of life.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Besides the effect of running water on public health, and perhaps the impact of the Internet on interpersonal communication, it is hard to imagine a more impactful technology than lighting.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">As you might imagine, lighting has come a long way to get to where it is today. <\/span><span style=\"vertical-align: inherit;\">Take a quick look at this diagram by the 20th-century French illustrator Maurice Desertain:<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">When you think about lighting, it&#8217;s important to consider three different things:<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The fuel source, the luminance, and the technology used to produce visible light.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">We will touch on these three elements when we look at the evolution of lighting from its birth to the modern-day revolution that is taking place with LED technology for the 21st century:<\/span><\/span><\/p>\n<h3><strong><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-73024 aligncenter\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e.jpg\" alt=\"\" width=\"500\" height=\"384\" title=\"l\" srcset=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e.jpg 500w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-400x307.jpg 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">natural light:<\/span><\/span><\/strong><\/h3>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The most important source of light is the sun and perhaps the most underappreciated use of this abundant light is architecture designed to take advantage of it.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The Pantheon is one of the most well-known examples of historic architecture that uses daylight through its design.<\/span><\/span><\/p>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-73026 aligncenter\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1.png\" alt=\"\" width=\"290\" height=\"193\" title=\"l\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Perhaps the most significant architectural achievement from the Roman Empire, the Pantheon is designed almost entirely around an open-air circle at the top of its dome. <\/span><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-73028\" style=\"font-size: 16px; font-weight: 400;\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e.webp\" alt=\"\" width=\"1280\" height=\"720\" title=\"l\" srcset=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e.webp 1280w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-600x338.webp 600w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1024x576.webp 1024w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-768x432.webp 768w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-640x360.webp 640w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-400x225.webp 400w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1200x675.webp 1200w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><br \/>\n<strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Torches:<\/span><\/span><\/strong><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-73030 aligncenter\" src=\"https:\/\/www.gahzly.com\/wp-content\/uploads\/2022\/07\/\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-2.jpg\" alt=\"\" width=\"200\" height=\"133\" title=\"l\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">According to the Society for Lighting Engineering, \u201cThe first attempt at man-made lighting occurred about 70,000 years ago.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The first lamp was invented from a shell, hollow rock, or other similar non-flammable object which was filled with a combustible material (perhaps dried grass or wood), sprinkled with animal fat (the original lighter fluid) and ignited.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Hand-held, building-mounted torches have advanced beyond their rudimentary beginnings but the basic principles remain the same:<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">A fuel source is a type of oil, wax, or combustible substance surrounded by non-combustible materials.<\/span><\/span><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-73034\" src=\"https:\/\/www.gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602.jpg\" alt=\"\" width=\"1300\" height=\"978\" title=\"l\" srcset=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602.jpg 1300w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602-600x451.jpg 600w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602-1024x770.jpg 1024w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602-768x578.jpg 768w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602-463x348.jpg 463w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602-640x480.jpg 640w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602-400x300.jpg 400w, https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-1-e1657302490602-1200x903.jpg 1200w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/p>\n<h3><strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Candles and wick introduction:<\/span><\/span><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-73032 aligncenter\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-3.png\" alt=\"\" width=\"218\" height=\"363\" title=\"l\"><\/strong><\/h3>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">As you might expect, technology such as ventilation (such as pipes and chimneys) has greatly improved the ability to use fire effectively for lighting.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Perhaps the most important technical advance, however, was the introduction of the wick for candle production.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Wicks, in combination with early candle materials such as beeswax or tallow (a derivative of animal fat), represented the most important technological advance in lighting since the discovery of fire itself.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">According to author Patricia Telesco, &#8220;candle holders dating back to the 4th century BC.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Found in <\/span><\/span><strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Egypt<\/span><\/span><\/strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\"> .<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The Greeks and Romans are credited with introducing the wick to the Egyptian idea of \u200b\u200blighting lard.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Asian societies have been making candles separately from whale blubber since 200 BC.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">did you know <\/span><span style=\"vertical-align: inherit;\">The word candle is derived from the Latin word \u201cincindium,\u201d which means wildfire, heat, or flame.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The oldest surviving beeswax candles are Oberflacht candles found in the Alamannic Cemetery in Sittingen-Uberflacht, Kreis-Tuttlingen, Germany.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">They currently reside in the Museum of the State Museum of W\u00fcrttemberg in Stuttgart, Germany.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The following major developments in lighting (gas lamps and electric lamps) occurred in sequence nearly a century with the advent and progress of the Industrial Revolution.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The main advantages of gas (electricity barriers to entry) include the infrastructure already in place by the time the light bulbs went out and the ability to be dual-purpose (gas can also be used for cooking).<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Let&#8217;s discuss them one by one.<\/span><\/span><\/p>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73036 size-full aligncenter\" style=\"font-size: 16px;\" src=\"https:\/\/www.gahzly.com\/wp-content\/uploads\/2022\/07\/-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-2-e1657302784400.jpg\" alt=\"\" width=\"350\" height=\"285\" title=\"l\"><strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Gas lamps:<\/span><\/span><\/strong><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-73038 aligncenter\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-4.png\" alt=\"\" width=\"171\" height=\"262\" title=\"l\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">\u00a0Gas lighting was developed in England in 1790 and introduced to the United States by William Murdoch shortly thereafter.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Pelham Street in Newport, Rhode Island was the first section of the road in America to introduce Murdoch&#8217;s gas lamps (they were installed in 1792).<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Only a few decades later, gas fuel was used to light the streets in major eastern cities of the United States such as Philadelphia and Baltimore.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">You can read the complete history of street lighting in the United States here.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Various types of gas have been used over the years to include methane, acetylene, butane, propane, hydrogen, and natural gas.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The growth of gas lamps and the infrastructure to support them in cities and suburbs reflects the era&#8217;s developments in hydrocarbon fuel production (coal, petroleum and distillation production).<\/span><\/span><\/p>\n<h3><strong><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">light bulbs:<\/span><\/span><\/strong><\/h3>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The first electric light was invented by Humphrey Davy.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">According to the US Department of Energy, Davy &#8220;demonstrated the first incandescent light for the Royal Institution of Great Britain, using a bank of batteries and coal rods.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">His invention was what we generally refer to as an arc light (modern versions of which are still used today).<\/span><\/span><\/p>\n<figure id=\"attachment_73040\" aria-describedby=\"caption-attachment-73040\" style=\"width: 286px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73040 size-full\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-5.png\" alt=\"Humphry Davy incandescent lamp\" width=\"286\" height=\"428\" title=\"l\"><figcaption id=\"caption-attachment-73040\" class=\"wp-caption-text\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Humphry Davy incandescent lamp<\/span><\/span><\/figcaption><\/figure>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Perhaps the person best known for developing light bulbs and the infrastructure to support them is American inventor Thomas Edison.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">In 1879, Edison set out to create a long-lasting electric light bulb that could rival gas lighting (especially for indoor use).<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Its first successful prototype was on October 22, 1879 when its incandescent light burned for 13 and a half hours.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">A few months after that, Edison discovered charred bamboo filaments that burned for 1,200 hours.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">This was the revolutionary advancement he was looking for and represented the necessary lighting technology needed to establish electricity as the primary source of energy for lighting both indoors and outdoors.<\/span><\/span><\/p>\n<figure id=\"attachment_73042\" aria-describedby=\"caption-attachment-73042\" style=\"width: 300px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73042 size-full\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-6.png\" alt=\"Replica of Thomas Edison&#039;s incandescent light bulb made by John and Linda Casey of Missouri\" width=\"300\" height=\"410\" title=\"l\"><figcaption id=\"caption-attachment-73042\" class=\"wp-caption-text\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Replica of Thomas Edison&#8217;s incandescent light bulb made by John and Linda Casey of Missouri<\/span><\/span><\/figcaption><\/figure>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Incandescent lamps would continue to dominate the lighting world until fluorescent lamps were introduced commercially by Daniel MacFarlane Moore around 1904.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Although early fluorescent lights required high-voltage, non-standard conductors to operate, their relatively high efficiency when compared to incandescent lights was enough of a competition task to cause major incandescent company General Electric to improve their incandescent technology by introducing a tungsten filament.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">At the same time (circa 1901) an inventor named Peter Cooper Hewitt developed the first mercury vapor light that was highly efficient and compatible with standard electrical infrastructure. <\/span><\/span><br \/>\n<span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The twentieth century was the century of high intensity discharge lamps (high intensity discharge lamps)<\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-73044 aligncenter\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-7.png\" alt=\"\" width=\"250\" height=\"186\" title=\"l\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">. <\/span><span style=\"vertical-align: inherit;\">Among the most common and commercially successful types of HID lamps are fluorescent lamps, mercury vapor, and high beam lamps.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Sodium pressure, and metal halide.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">All of these lamps are of the same type of technology in that they work by sending an electric current between two metal electrodes and through a glass tube filled with an inert gas which causes visible light to be emitted. <\/span><\/span><br \/>\n<span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The only lighting technology that was significantly different from the various HID lamps invented in the 20th century was the light-emitting diode (LED).<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">LED lighting is a solid-state light (solid-state lamp) that does not require a glass cover like conventional lamps and produces light by converting electrical current using semiconductors.<\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-73046 aligncenter\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-8.png\" alt=\"\" width=\"300\" height=\"265\" title=\"l\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">The first LEDs were invented in <\/span><\/span><br \/>\n<span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">the 1960s by General Electric scientist Nick Holonyak, who called them &#8220;magic.&#8221; <\/span><\/span><br \/>\n<span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Modern lighting has continued to improve across the spectrum (incandescent, fluorescent, metal halide, light-emitting diode, etc.).<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">To date, the most promising lamps for the 21st century seem to be LEDs<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">. <\/span><span style=\"vertical-align: inherit;\">Modern LEDs have a useful life 2-4 times that of their competitor while also producing higher quality light more efficiently.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">For more information about LEDs you can read here.<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Calculate the appropriate <\/span><\/span><a href=\"https:\/\/gahzly.com\/en\/product-category\/cables-accessories\/\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">electrical cable<\/span><\/span><\/a><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\"> section<\/span><\/span><\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-50618 aligncenter\" src=\"https:\/\/gahzly.com\/wp-content\/uploads\/2021\/12\/editor-1s-205px.gif\" alt=\"\" width=\"205\" height=\"205\" title=\"l\"><\/p>\n<h4><\/h4>\n<h4><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">We are pleased to have you visit our pages on social networking sites, where we publish exclusive offers on our website.<\/span><\/span><\/h4>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Our Facebook page\u00a0 <\/span><\/span><a href=\"https:\/\/www.facebook.com\/Gahzlystore\/\" target=\"_blank\" rel=\"noopener\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">here<\/span><\/span><\/a><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\"> .<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">Our Twitter account\u00a0 <\/span><\/span><a href=\"https:\/\/twitter.com\/gahzly1\" target=\"_blank\" rel=\"noopener\"><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\">here<\/span><\/span><\/a><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\"> .<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The evolution of lighting through history The advent of reliable and energy efficient lighting in the home and in our workplaces has been and continues to play a major role in the modern way of life. Besides the effect of running water on public health, and perhaps the impact of the Internet on interpersonal communication, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":73023,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_post_was_ever_published":false},"categories":[7415,12270],"tags":[7804,7803,7807,7796,12271,12272,12273,12274,12275],"class_list":["post-77870","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lightning-and-accessories","category-lamps","tag-and-accessories","tag-light","tag-lighting-en","tag-lighting","tag--en"],"featured_image_src":{"landsacpe":["https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-860x445.png",860,445,true],"list":["https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-463x348.png",463,348,true],"medium":["https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u062a\u0637\u0648\u0631-\u0627\u0644\u0625\u0636\u0627\u0621\u0629-\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e-300x225.png",300,225,true],"full":["https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e.jpg",860,645,false]},"jetpack_featured_media_url":"https:\/\/gahzly.com\/wp-content\/uploads\/2022\/07\/\u0639\u0644\u064a-\u0645\u0631-\u0627\u0644\u062a\u0627\u0631\u064a\u062e.jpg","_links":{"self":[{"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/posts\/77870","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/comments?post=77870"}],"version-history":[{"count":0,"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/posts\/77870\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/media\/73023"}],"wp:attachment":[{"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/media?parent=77870"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/categories?post=77870"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gahzly.com\/en\/wp-json\/wp\/v2\/tags?post=77870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}