100 Interesting Facts About Light Bulb

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An electric bulb is a light source in which an electric current passes through a filament that heats up and produces light. The hot filament is placed inside a glass or quartz container filled with zero air or noble gas to prevent burning. Electricity is sent to the filament of the bulb through two wires attached to it.

Different types of bulbs are made for different shapes, voltage differences (1,5-300 volts), lighting etc. Such low cost bulbs can be operated with both alternating and unidirectional current.

100 Interesting Facts About Light Bulb

Interesting Facts About Light Bulb

  • A light bulb is a device used to create light (illumination).
  • 600 million light bulbs are disposed of each year in the USA.
  • The average lifetime of a household light bulb is around 1,000 hours.
  • The first visible LED was invented by Professor Nick Holonyak in 1962.
  • The amount of light given out by an LED light bulb is measured in lumens.
  • The incandescent light bulb contains a base, glass enclosure and a filament.
  • In most homes, using light bulbs accounts for 10-15% of the electricity bill.
  • Incandescent light bulbs come in a large variety of sizes, shapes and wattages.
  • Incandescent light bulb alternatives use less energy and have a greater lifetime.
  • Some CFL bulbs will emit a buzz to let you know they are coming to the end of their lifespan.
  • Prior to incandescent light bulbs, lighting was created by candles, oil lamps and gas lighting.
  • In 2004, LED wallpaper was invented which has lights built into the paper for decorative effect.
  • A light bulb uses electricity to heat a wire filament in an enclosed glass case to produce light.
  • Historians attribute up to 22 different inventors of the incandescent light bulb before Thomas Edison.
  • Prior to the invention of the bulb, lighting was created by candles, oil lamps or through gas lighting.
  • The first concept and demonstration of heating a wire to produce light was by Ebenezer Kinnersley in 1761.

Amazing Facts About Light Bulb

  • Only 10% of the energy from incandescent light bulbs is used to create light, the other 90% produces heat.
  • A light bulb is also known as an incandescent light bulb, incandescent lamp or an incandescent light globe.
  • Halogen lights have a lifetime of about 2,000 hours, and that’s twice as long as a incandescent light bulb.
  • The most LED lights lit at the same time was achieved in 2019 in Romania when 7,235 were turned on together.
  • LEDs convert nearly 100% of the energy that they use into light, making them more effective than incandescent bulbs.
  • Compact fluorescent lights have a lifetime of about 10,000 hours, and that’s 10 times longer than an incandescent light bulb.
  • The brain operates on the same amount of power as a 10-watt to 15-watt light bulb, it varies depending on the size of your brain.
  • Incandescent light bulbs are very energy inefficient, less than 5% of the energy required by it is needed to produce the visible light.
  • Each compact fluorescent light (CFL) bulb contains around four grams of mercury, although none of this is released whilst they are in use.
  • light bulb facts18. LED lights have a lifetime between 20,000 and 30,000 hours, and that is 20 times longer than an incandescent light bulb.
  • CFL bulbs are often referred to as 'energy savers' due to the fact they use less energy than incandescent bulbs and can last up to ten years.
  • Incandescent light bulbs are sold in different wattages, like 60 watts or 100 watts. The wattage dictates how much energy the light bulb uses per hour.
  • If all American homes replaced one of their incandescent bulbs for a CFL bulb, it would save enough energy to power three million households each year.
  • The average working lifespan of incandescent bulbs that are used in the home is 1000 hours. An LED light, however, can last up to 25,000 hours or more.
  • There are a few alternatives to incandescent light bulbs, and they are halogen lamps, compact fluorescent lamps (CFL) and light emitting diode lamps (LED).
  • According to estimates from the U.S. Department of Energy, the increase of the use of LED lights will reduce the world’s energy costs by over $30 billion USD.
  • Incandescent light bulbs come in various wattages, such as 100 watts or sixty watts. The amount of energy used by the bulb each hour is determined by its wattage.

Facts About The Light Bulb Thomas Edison

  • The filament used in Thomas Edison’s first practical commercial light bulb came from his observation of a bamboo fishing line while observing a total solar eclipse.
  • Fireflies emit cold light through a chemical reaction with near-100-percent efficiency. Scientists are working to mimic nature’s design to make LEDs more efficient.
  • The U.S Department of Energy has estimated that over the next 20 years as more people switch to using LED lights, they will save about $265 billion in energy costs!
  • You may find fewer bugs in your home if you switch from an incandescent light bulb to an LED as they produce less heat and less UV light, both of which attract bugs.
  • Incandescent light bulbs usually consist of three main parts; a glass housing, a tungsten filament and a base, and the housing which contains a vacuum or an inert gas.
  • If every home in America changed just one incandescent bulb for a compact fluorescent light bulb, enough energy would be saved every year to light three million homes!
  • Compact fluorescent lights contain small amounts of mercury in them. Even though they use less energy than Incandescent light bulbs they aren’t good for the environment.
  • LED stands for light-emitting diode and on average, LED bulbs use less energy than incandescent bulbs, 75% less in fact, which makes them much more environmentally friendly.
  • The Centennial Light incandescent light bulb, at the Livermore/Pleasanton Fire Department in California, has been used since 1901 – making it the world’s longest lasting bulb.
  • "Always-on" or standby energy use by inactive appliances, electronics, and miscellaneous electrical devices cost up to $19 billion a year or about $165 per U.S. household on average.
  • Renown for the warm light they produce, incandescents can improve the appearance of people’s skin. In contrast, fluorescent lights are criticized for the bluish, harsh light they produce.

Technology Facts About Light Bulb

  • Different bulbs create different types of light. Incandescents, for instance, produce a light that is bright and crisp whereas the light from CFLs is usually much softer and warm in color.
  • Incandescent light bulbs are still commonly used for domestic purposes. For example, most forms of portable lighting, such as electric torches and vehicle headlamps, use incandescent bulbs.
  • Pele, the legendary Brazilian footballer, was named in honor of electricity pioneer Thomas Edison. His parents named him Edson Arantes (dropping the ‘i’), and Pele was just a childhood nickname.
  • Originally, light bulb filaments had a dimmer glow than today’s filaments and were wound more loosely. Early light bulbs were easy on the eye, with a yellow/orange glow and twisted filament loops.
  • Visible light is just the part of the electromagnetic spectrum that our eyes can see. That’s what makes LED light so efficient: unlike incandescent bulbs, LEDs are designed to only emit visible light.
  • When looking for a new incandescent bulb, it is better to focus on its lumen rating – rather than its wattage. Lumens measure the brightness of a bulb, whereas watts just measure a bulb’s energy consumption.
  • Tungsten is used for the filament in incandescent light bulbs as it has a very high melting point, allowing it to remain stable enough for the bulb to create incandescent light when electricity is run through it.
  • In 1880, once Edison had achieved success with his light bulb designs, he founded the Edison Electric Illuminating Company of New York. This business was set up with funding from rich investors, such as JP Morgan.
  • Many modern items use LED light including traffic lights, TVs, and vehicles. These lights are chosen because they are small in size, easy to maintain, durable and have the ability to direct light in one direction.
  • Several years ago, it was announced that incandescent bulbs would be replaced eventually, because they failed to meet federal standards for energy efficiency. Since 2014, they have not been manufactured in America.

Historical Facts About Light Bulb

  • Located in California at the Livermore-Pleasanton Fire Department, the Centennial Light is an incandescent light bulb that holds the world record for the longest-last lighting bulb as it has been in use since 1901.
  • The General Electric Company patented their method for producing tungsten filaments for incandescent light bulbs in 1906. During Edison’s time, the equipment required to create the fine wires for these filaments did not exist.
  • In the 1840s, a British scientist called Warren de la Rue improved upon earlier incandescent bulb designs by using a platinum wire for the filament instead of copper but the price of platinum made these bulbs far too expensive.
  • The Centennial Light is an incandescent light bulb located at Livermore-Pleasanton Fire Department in California. It holds the world record for the longest-last lighting bulb. It’s estimate this light bulb has been burning since 1901.
  • To protect them from the air, filaments of incandescent light bulbs are kept inside the glass. Then, air inside the bulbs is substituted for harmless noble gas, such as argon or neon. Alternatively, the air is extracted using a vacuum.
  • When it comes to dimmability, incandescents are hard to beat. Unlike some lighting technologies, they do not emit inferior light when used with dimmer switches. The LED sector is pulling out all the stops to develop a product that has this quality.
  • Incandescent light bulbs have Edison twenty-seven millimeter (E27) male screw bases that are medium sized. While energy efficient light bulbs are now used more commonly than these lovely filament bulbs, they are still available as vintage light bulbs.
  • The first light bulbs to shine on Niagara Falls were installed in 1879, using lights with illumination equivalent to 32,000 candles. Today there are 21 xenon spotlights, 4,000 watts each, at the Falls which are equivalent to about 8.2 billion candles.
  • Just ten percent of an incandescent light bulb’s energy produces light. The remaining ninety percent produces heat. In contrast, a CFL (Compact Fluorescent Light) bulb uses eighty percent less energy than a traditional bulb, and lasts about twelve times longer.
  • The world’s longest-lasting light bulb, the Centennial Light at Fire Station 6 in Livermore, California, has reportedly been burning since 1901, with a few interruptions during power failures. (In fact, that bulb looks a little bit like these antique replicas…)
  • Halogen lamps are incandescent lamps, with capsules holding a specific composition of halogen gas around the heated filaments. This boosts the efficiency of the lamps, because they use less energy than normal incandescent bulbs – although they are more expensive.
  • As well as improving the design of the light bulb itself, Edison and his team of researchers devised a method of supplying homes with electricity. This method was called the electric power system, and it allowed domestic light bulbs to be used by the wider public.

Unbelievable Facts About Light Bulb

  • Although the human eye does not always notice it, incandescent bulbs tend to flicker quite frequently. Rapid gas movements make these bulbs work, and this is what causes them to flicker. Subconsciously, these rapid movements of light can disrupt people’s concentration.
  • Sir Joseph Swan is known by some as the inventor of the light bulb and his bulb used a carbon filament. He was responsible for providing the first incandescent bulbs to homes and buildings in the United Kingdom in the late 1800s, including to the Savoy Theatre in London.
  • Only 10% of energy in an incandescent light bulb is used to create light. The other 90% of a light bulb’s energy creates heat. Compact fluorescent light bulbs (CFLs), on the other hand, use about 80% less electricity than conventional bulbs and last up to 12 times as long.
  • As time passes, the filaments of incandescent light bulbs erode – which causes them to burn out. The filaments are weakened by constant heating, until they break and are unable to conduct electricity. When this happens, the bulbs can not produce light and have to be replaced.
  • Incandescent lamps have been a common feature of households for well over a century. Over the past ten years, there has been a big push to improve the efficiency of light bulbs by introducing compact fluorescents. Nonetheless, efforts to ban incandescent bulbs have been met with considerable resistance.
  • Irving Langmuir discovered that it was possible to double the efficiency of light bulbs by putting an inert gas, such as nitrogen, inside them. After this breakthrough in 1913, scientists made further enhancements over the next four decades that made incandescent bulbs more efficient and more affordable.
  • In the average home, 75% of the electricity used to power home electronics is consumed while the products are turned off. The average desktop computer idles at 80 watts, while the average laptop idles at 20 watts. A Sony PlayStation 3 (the “slim” version) uses about 200 watts and nearly as much when idling.
  • Two years later, an English chemist called Humphry Davy created the world's first electric lamp by connecting voltaic piles to charcoal electrodes. His invention became known as the electric arc lamp but it was impractical as it burnt out quickly and was far too bright to use in any home or work environment.
  • Whilst light-emitting diode bulbs are the most energy-efficient bulbs for using for car headlights they can be relatively expensive. Xenon bulbs actually product the brightest light for headlights, but they can cause a glare that makes it difficult for drivers coming the opposite way to see the road clearly.
  • American inventor Sir Thomas Edison then patented his design for an incandescent light bulb in 1879 which sought to improve on earlier versions. This patent formed the basis for modern bulbs as Thomas Edison's light bulb was the first affordable and practical solution to being able to light homes and workplaces.
  • Inventors began working on a device that would produce light using electricity over 150 years ago. Although there are a few names that are well known in connection with the invention of the light bulb, it was actually a series of people over many years that led to the creation of the modern bulbs that we use today.
  • The amount of energy Americans use doubles every 20 years. (This is actually false. While electricity usage was rapidly increasing over time, the U.S. electric power consumption per capita peaked in 2005 and has slowly begun to fall since then due to the development of more energy-efficient appliances and lighting.)
  • Incandescent light bulbs were not invented by Thomas Edison. Prior to Edison’s designs, twenty-three other bulbs had been developed. For example, in 1809, electric lighting pioneer Sir Humphrey Davy produced the first ever electric arc lamp. Later, in 1820, Warren De la Rue developed the first ever incandescent light.
  • One notable characteristic of incandescent bulbs is their color rendering ability. Incandescent bulbs with a 2700K color temperature have a perfect CRI (Color Rendering Index) rating of 100. This CRI score reduces slightly when the color temperature increases, although it usually remains above ninety-five (which is still outstanding).
  • In comparison to other forms of lighting, incandescent bulbs have a shorter lifespan. Typically, a home light bulb will last for about 1000 hours. In contrast, LEDs and compact fluorescents will last for at least 20,000 hours and 10,000 hours respectively. LED lamps, high intensity discharge lamps and fluorescent lamps can be used to replace incandescent bulbs.
  • According to the U.S. Energy Information Administration (EIA), lighting was estimated to account for about 11% of total U.S. electricity consumption in 2014. Cooling and heating costs made up approximately 43% of estimated U.S. residential electricity consumption. Notably, studies show that legal indoor cannabis production accounts for 1% of total electricity use in the U.S.
  • Incandescent light bulbs were ineffective and rarely used until the 1870s, when Thomas Edison and Joseph Swan improved them. This led to the widespread use of electric bulbs in businesses and homes. The bulbs had filaments made from carbon, before tungsten filaments were introduced at the beginning of the twentieth century. Tungsten filaments produce brighter light and last longer.
  • In 1800, an Italian inventor named Alessandro Volta created a device known as the voltaic pile which used discs of copper and zinc layered between salt water-soaked cardboard to produce an electrical current when copper wire was attached to each end. The copper wire glowed when electricity passed through it and this invention is said to have been one of the first examples of incandescent lighting.

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