Otis Singleton
The invention of the light bulb is often attributed to Thomas Edison, who developed a commercially viable electric light bulb in 1879. However, the story of the light bulb's invention is a cumulative effort, with several key figures contributing to its development. These include Alessandro Volta, Humphry Davy, Joseph Swan, and Lewis Howard Latimer, among others. Edison's success was due to his experimentation with carbon filaments and improved vacuum pump technology, allowing him to create a long-lasting and commercially successful incandescent lamp.
| Characteristics | Values |
|---|---|
| Name | Thomas Alva Edison |
| Born | 11 February 1847 |
| Birthplace | Ohio |
| Nationality | American |
| Profession | Inventor and businessman |
| Inventions | Microphone, telephone receiver, universal stock ticker, phonograph, kinetoscope, storage battery, electric pen, mimeograph, motion picture camera, and early versions of the electric light bulb |
| Year of invention of the lightbulb | 1879 |
| Other inventors who contributed to the development of the lightbulb | Alessandro Volta, Humphry Davy, Joseph Swan, Warren de la Rue, William Sawyer, Albon Man, James Bowman Lindsay, Henry Woodward, Mathew Evans, Moses G. Farmer, Heinrich Göbel |
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What You'll Learn
Thomas Edison's role
Thomas Alva Edison, born in Ohio on 11 February 1847, was an American inventor and businessman. He is regarded as one of the most prolific inventors in American history, with 1093 US patents in his name. Edison's inventions include early versions of the electric lightbulb, which have had a widespread impact on the modern industrialised world.
Edison was inspired to become an inventor at a young age. He set up a laboratory in the basement of his family home in Michigan, where he spent most of his time experimenting. He received encouragement from his mother, who gave him books on chemistry and electronics. Edison received most of his education at home, and his early schooling was fairly limited.
In 1875, Edison set up a laboratory in Menlo Park, New Jersey, where many of his early inventions were developed. In 1878, he began working on a system of electrical illumination, hoping to compete with gas and oil-based lighting. Edison focused on creating a long-lasting incandescent lamp, which would be suitable for indoor use. He experimented with different filament materials, such as cardboard, various grasses and canes, and platinum, before settling on bamboo as the best filament.
On 4 November 1879, Edison filed for a US patent for an electric lamp using a carbon filament. He made the first public demonstration of his incandescent lightbulb on 31 December 1879 in Menlo Park. Edison also made other improvements to the lightbulb, such as creating a better vacuum pump to fully remove the air from the bulb and developing the Edison screw, which became the standard socket fitting for lightbulbs.
While Edison is often credited with inventing the lightbulb, it is important to recognise that he built upon the work of previous inventors. British scientist Warren de la Rue, for example, had developed an efficient lightbulb using a coiled platinum filament in 1840. However, Edison's improvements to the lightbulb, and his commercialisation and widespread application of the technology, had a significant impact on the world of lighting and electricity.
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The lightbulb's history
The lightbulb is one of the world's most important inventions, dramatically changing how we use energy in our homes and offices. The story of the lightbulb began long before Thomas Edison, who is often credited as its inventor, patented the first commercially successful bulb in 1879.
In 1800, Italian inventor Alessandro Volta developed the first practical method of generating electricity, the voltaic pile. This was one of the earliest manifestations of incandescent lighting. In 1835, the first constant electric light was demonstrated, and over the next 40 years, scientists around the world worked on the incandescent lamp, experimenting with the filament and the bulb's atmosphere. Humphry Davy's arc lamp was an improvement on Volta's stand-alone piles, but it was still not a practical source of lighting.
In 1840, British scientist Warren de la Rue developed an efficient lightbulb using a coiled platinum filament. However, the high cost of platinum prevented it from becoming a commercial success. Many other inventors also contributed to the development of the lightbulb, including Alessandro Volta, Joseph Swan, Henry Woodward, Matthew Evans, William E. Sawyer, James Bowman Lindsay, Moses G. Farmer, Heinrich Göbel, and others.
Thomas Edison began working on a system of electrical illumination in 1878, hoping to compete with gas and oil-based lighting. He focused on creating a long-lasting incandescent lamp for indoor use. Edison and his researchers at Menlo Park experimented with different filaments, first testing carbon, then platinum, and finally returning to a carbon filament. They produced a light bulb with a carbonized filament of uncoated cotton thread that could last for 14.5 hours. Edison continued to experiment with filaments, eventually settling on bamboo, which gave his lamps a lifetime of up to 1,200 hours. This filament became the standard for the Edison bulb for the next 10 years. Edison also made other improvements to the light bulb, including creating a better vacuum pump to fully remove the air from the bulb and developing the Edison screw, which became the standard socket fitting for light bulbs.
Edison made the first public demonstration of his incandescent light bulb on December 31, 1879, in Menlo Park. He patented the design in 1880 and began commercializing it, with his first commercial application being aboard the Columbia steamer in 1880.
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Other inventors' contributions
The invention of the light bulb was not a single eureka moment but a series of small improvements on the ideas of previous inventors. Many inventors contributed to the development of the light bulb over almost two centuries.
In the 1760s, the first concept of the light bulb with accompanying proof appeared, courtesy of Ebenezer Kinnersley, an England-born scholar at the College of Philadelphia. Kinnersley performed the first recorded demonstration of electroincandescence, or the production of visible light through the application of electric current.
In 1802, Humphry Davy used the voltaic pile to create the 'electric arc lamp'. This rudimentary lamp, which shone too brightly, is considered the first light bulb. In 1835, James Lindsay, a Scottish inventor, created an electric light comparable to that of a candle. The first constant electric light was demonstrated that same year.
In 1840, Warren de la Rue created a device that was in many ways similar to the modern light bulb. It featured a thin metal strip made of a metal with a high melting point, encased in a glass bulb with the air evacuated (a near-vacuum light bulb). Two years earlier, a Belgian inventor, Marcellin Jobard, had also created a similar device but used a carbon filament instead of a metal one.
In 1841, Frederick de Moleyns received the first patent for an incandescent lamp in England. The lamp used a glass bulb, a partial vacuum, and powdered charcoal between two platinum filaments to emit light. However, the lamp was not efficient enough for commercial use. In 1865, German chemist Hermann Sprengel invented a mercury-vacuum pump, known as the Sprengel pump, that was quickly adopted by inventors developing incandescent lamps because it helped preserve the filament inside the bulb.
In 1874, Henry Woodward and Mathew Evans filed a patent for an incandescent light bulb with a carbon filament in Canada and the United States. In 1878, Joseph Swan, a Sunderland-born chemist, created the first successful incandescent filament electric lamp and gave public demonstrations of it in late 1878 and early 1879.
In 1879, Thomas Edison purchased Woodward and Evans' patent and presented a light bulb with a carbonated bamboo filament with a lamp life of 600 hours. This was the first real commercial model. However, Edison's contribution was more about popularizing the invention and organizing mass production. He also improved the design and performance of the earliest incandescent lamps, experimenting with the work done by others before him to create a truly commercially viable light bulb.
In 1881, Lewis Latimer, along with his assistant Joseph Nichols, was the first person to receive a patent for the direct forerunner to today's commonly used light bulb. Latimer's new light bulb used a revolutionary method of manufacturing carbon filaments that produced light for extended periods.
In 1883, the Edison Electric Light Company, Ltd. merged with The Swan Electric Company and became the Edison and Swan United Electric Light Company, Ltd. (commonly known as Ediswan). Edison also developed a whole suite of inventions that made the use of light bulbs practical, including the first electric meter.
In 1897, German physicist Walther Nernst developed a ceramic-carbide-based lamp that did not require a vacuum or an inert gas environment to operate and was much more efficient than all carbon-based light bulbs developed until then. In 1904, the first modern light bulb was constructed and patented in Austro-Hungary by Sandor Just and Franjo Hanaman. Their light bulb was a glass container filled with argon and used a tungsten filament, much like the bulbs used today.
Other notable contributors include Heinrich Geissler and Julius Plücker, who in the 19th century discovered that they could produce light by removing almost all of the air from a long glass tube and passing an electrical current through it, an invention that became known as the Geissler tube; Peter Cooper Hewitt, whose work in the early 1900s became one of the precursors to the fluorescent lamp; and Bernie Lee Benbow and Junichi Miura, who in 1917 and 1921 respectively, created the first coiled coil filament and the first double-coil light bulb.
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Patents and commercialisation
While Thomas Edison is often credited as the inventor of the lightbulb, the process involved many inventors and a series of small improvements on the ideas of previous inventors.
Edison filed for a patent for an electric lamp with a carbon filament in November 1879 and received US patent 223,898 on 27 January 1880. The patent described several ways of creating the carbon filament, including the use of "cotton and linen thread, wood splints, papers coiled in various ways". Edison spent the next year finding the perfect filament, testing more than 6,000 plants to determine which material would burn the longest. He eventually settled on bamboo, which could burn for more than 1,200 hours.
Edison's work on the lightbulb was influenced by the work of earlier inventors. In 1800, Italian inventor Alessandro Volta developed the first practical method of generating electricity with the voltaic pile, which is considered one of the earliest forms of incandescent lighting. In 1835, the first constant electric light was demonstrated, and over the next 40 years, scientists around the world worked on the incandescent lamp. In 1840, British scientist Warren de la Rue developed an efficient lightbulb design using a coiled platinum filament, but the high cost of platinum prevented its commercial success. In 1848, Englishman William Staite improved the longevity of conventional arc lamps by developing a clockwork mechanism that regulated the movement of the lamps' carbon rods. In 1850, English chemist Joseph Swan began working on making electrical light more economical, and by 1860 he had developed a lightbulb that used carbonized paper filaments. Swan received a patent in the UK for his lightbulb in 1880.
Edison's patent was challenged in court by Joseph Swan, who held a British patent for a similar incandescent electric lamp. To avoid a court battle, Edison and Swan formed a joint company called Ediswan to manufacture and market the invention in Britain. Edison also faced patent challenges from William E. Sawyer, whose work Edison's patent was ruled to be based on in 1883, and Lewis Latimer, who held a patent for the electric lamp issued in 1881 and a second patent for the "process of manufacturing carbons" (the filament used in incandescent light bulbs) issued in 1882. Litigation over Edison's patent continued for nearly six years until a judge ruled in his favour in 1889.
Edison's first commercial application of his incandescent light bulb was on the Columbia, a steamer belonging to Villard, in 1880. Edison and his team also worked on improving the generation of electricity, developing the first commercial power utility called the Pearl Street Station in lower Manhattan. Edison developed the first electric meter to track how much electricity each customer was using. He also developed a whole suite of inventions that made the use of light bulbs practical, including modelling his lighting technology on the existing gas lighting system and demonstrating that electricity could be distributed from a centrally located generator through a series of wires and tubes.
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The lightbulb's impact
While Thomas Edison is often credited as the inventor of the lightbulb, it is the result of the work of many inventors over time. The invention of the incandescent lightbulb is considered a major milestone in human history, with a wide-ranging impact on society.
The lightbulb revolutionized the way we use energy and design buildings. It changed the way we light our homes and offices, with a shift from oil lamps and gas lighting to artificial lighting. This led to the creation of a whole Department of Energy, with the use of electric generators, light bulbs, and lighting systems.
The lightbulb also had a significant impact on work and productivity. It increased the length of the average workday, allowing for longer work hours, and spurred industrial advancements. It improved safety in the workplace, as increased luminosity helped laborers identify potential hazards. The lightbulb reduced the risk of fires, which were common with candles and oil-based lamps, leading to increased lifespans.
The invention of the lightbulb also had a knock-on effect, inspiring further advancements and new inventions. It led to improvements in the filament manufacturing process, the development of new lighting technologies, and the creation of new, revolutionary products. Edison himself developed a range of inventions that made the use of light bulbs practical, including the first electric meter to track electricity usage.
The lightbulb also had a social impact, allowing people to enjoy leisure activities in the evenings and changing the way people interacted with their surroundings after dark.
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Frequently asked questions
While Thomas Edison is often credited as the inventor of the lightbulb, several inventors contributed to the development of this technology. These include Alessandro Volta, Humphry Davy, and Joseph Swan.
Edison patented the first commercially successful bulb in 1879 and began commercializing his incandescent light bulb in 1880. He and his researchers at Menlo Park focused on improving the filament, testing carbon, platinum, and eventually returning to a carbon filament.
In 1840, British scientist Warren de la Rue developed an efficient lightbulb using a coiled platinum filament. However, the high cost of platinum prevented it from becoming a commercial success. Other inventors who developed early incandescent lamps include Alessandro Volta, Henry Woodward, Mathew Evans, James Bowman Lindsay, Moses G. Farmer, William E. Sawyer, Joseph Swan, and Heinrich Göbel.
