Wiktor Wise
While Thomas Edison is often credited as the inventor of the incandescent light bulb, several inventors contributed to the development of this technology. The story of the lightbulb began long before Edison patented the first commercially successful bulb in 1879. In 1835, James Bowman Lindsay demonstrated a constant electric light, and in the following years, scientists around the world worked on the incandescent lamp, tinkering with the filament and the bulb’s atmosphere.
| Characteristics | Values |
|---|---|
| Inventor | Thomas Edison, Joseph Swan, Alessandro Volta, Humphrey Davy, James Bowman Lindsay, Marcellin Jobard, Warren De la Rue, John W. Starr, Jean Eugène Robert-Houdin, Moses G. Farmer, Alexander Lodygin, Henry Woodward, Mathew Evans, Lewis Howard Latimer, Willis R. Whitney, William David Coolidge, Heinrich Geissler, Julius Plücker |
| Nationality | American, British, Italian, Belgian, Russian, Canadian |
| Year of Invention | 1879, 1880 (Edison); 1881 (Swan); 1835 (Lindsay); 1838 (Jobard); 1840 (De la Rue); 1845 (Starr); 1851 (Robert-Houdin); 1859 (Farmer); 1872, 1874 (Lodygin); 1874 (Woodward and Evans); 1882 (Latimer); 1903 (Whitney); 1910 (Coolidge); 1890s (Geissler and Plücker) |
| Improvements/Contributions | Edison: carbon filament, improved vacuum pump technology; Swan: carbonised paper filaments, carbonised cotton thread filament; Volta: electric battery, voltaic pile; Davy: electric arc lamp; Lindsay: constant electric light; Jobard: carbon filament, vacuum atmosphere; De la Rue: coiled platinum filament, vacuum tube; Starr: carbon filaments; Robert-Houdin: public demonstration of incandescent bulbs; Farmer: platinum filament; Lodygin: carbon rods, nitrogen-filled glass receiver; Woodward and Evans: carbon rods, nitrogen-filled glass cylinder; Latimer: efficient manufacturing of carbon filaments; Whitney: treatment for filaments to prevent darkening of bulbs; Coolidge: manufacturing of tungsten filaments; Geissler and Plücker: Geissler tube |
| Commercial Success | Edison's invention was the first to be commercially successful |
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What You'll Learn
Thomas Edison's incandescent lamp
Thomas Alva Edison, born in Ohio in 1847, is often credited as the inventor of the incandescent light bulb. However, several inventors contributed to the development of this technology before Edison. These include Alessandro Volta, Humphrey Davy, Joseph Swan, James Bowman Lindsay, Marcellin Jobard, Warren De la Rue, Frederick de Moleyns, John W. Starr, Jean Eugène Robert-Houdin, Moses G. Farmer, and Alexander Lodygin.
Edison's incandescent lamp was the result of his experiments with filaments and electric current. He aimed to create a high-resistance system that would require less electrical power, making it suitable for home use. By January 1879, Edison had developed a high-resistance, incandescent electric light at his laboratory in Menlo Park, New Jersey. This early prototype consisted of a thin platinum filament housed in a glass vacuum bulb, which delayed the filament from melting. However, the lamp only burned for a few hours.
Edison continued experimenting with different filament materials, eventually settling on a carbonized cotton thread filament. This filament radiated a soft orange glow when voltage was applied and burned for approximately fifteen hours before it burned out. Edison further refined his design, creating filaments that burned longer with each test. His improvements to the 1879 bulb culminated in a new version, patented on January 27, 1880. This lamp resembled the modern light bulbs we use today and was part of a larger electrical system Edison developed.
Edison's genius lay not only in his inventions but also in improving existing technologies and making them more practical for the public. His work on the incandescent lamp and electrical distribution systems revolutionized lighting and power generation, solidifying his legacy as one of the most renowned inventors in history.
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Earlier attempts at incandescent lighting
The story of the lightbulb began long before Thomas Edison 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 invention furthered experiments with electricity, and Humphry Davy produced the world's first electric lamp in 1802 by connecting voltaic piles to charcoal electrodes. This invention was known as an electric arc lamp, named for the bright arc of light emitted between its two carbon rods.
In the early 1800s, Humphry Davy, a British chemist and inventor, invented the carbon arc lamp. This device worked by sending an electrical current through two carbon electrodes separated by an air gap. The heat vaporized the carbon at the tips of the electrodes, producing a bright light. Over time, the carbon electrodes would burn down, requiring adjustments to maintain the proper gap.
In 1835, James Bowman Lindsay demonstrated a constant electric light at a public meeting in Dundee, Scotland. He stated that he could read a book at a distance of one and a half feet but did not pursue this invention any further. In 1838, Belgian lithographer Marcellin Jobard invented an incandescent light bulb with a vacuum atmosphere using a carbon filament. In 1840, British scientist Warren De la Rue created a design based on the concept of using platinum's high melting point to operate at high temperatures and an evacuated chamber to improve longevity. However, the cost of platinum made this design impractical for commercial use.
In 1841, Frederick de Moleyns of England was granted the first patent for an incandescent lamp, featuring platinum wires contained within a vacuum bulb. In 1845, American John W. Starr patented an incandescent light bulb using carbon filaments, but his invention was never commercially produced. In 1851, Jean Eugène Robert-Houdin publicly demonstrated incandescent light bulbs on his estate in Blois, France. These early attempts at incandescent lighting laid the foundation for Thomas Edison's successful commercialization of the lightbulb.
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The role of Joseph Swan
Although Thomas Edison is often credited as the inventor of the incandescent light bulb, the revolutionary technology was developed by several inventors. One of these inventors was Joseph Swan, a British physicist and chemist from Sunderland. Swan played a critical role in the development of the light bulb and his work with incandescent filament electric lamps predated Edison's.
In 1850, Swan began working with carbonized paper filaments in an evacuated glass bulb. By 1860, he had a working device, but the lack of a good vacuum and an inadequate electricity supply resulted in a short lifetime for the bulb and inefficient lighting. Swan gave public demonstrations of his first successful incandescent filament electric lamp in late 1878 and early 1879. His 1880 electric lamp design used carbonized cotton thread, which produced far superior results in light longevity. However, the thickness of his filaments was still an issue.
Around the same time, Thomas Edison was also working with cotton thread filaments. Edison's combination of thin carbon filament design and better vacuum pump technology ultimately made him the first to solve the scientific and commercial challenges of light bulb design. Swan's incandescent light bulb was installed and in daily use in London in 1881, but Edison's version was the first practical implementation. This was due to a combination of factors, including an effective incandescent material, a high vacuum, and the development of the associated components required for a large-scale lighting system.
Historian Thomas Hughes attributed Edison's business success to his development of an entire, integrated system of electric lighting. In summary, while Swan played a significant role in the invention of the incandescent light bulb, it was Edison who successfully commercialized the technology and made it practical for universal domestic use.
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The tungsten filament
While Thomas Edison is often credited with inventing the lightbulb, several inventors contributed to the development of this technology. The incandescent light bulb uses an electric current to heat a filament to produce light. The filament is typically made of tungsten wire, which has the highest melting point of any chemical element, and produces a white-hot glow.
The story of the lightbulb began long before Edison patented the first commercially successful bulb in 1879. In 1835, James Bowman Lindsay demonstrated a constant electric light, and in the following decades, scientists around the world worked on the incandescent lamp, experimenting with different filament materials and bulb atmospheres. These early bulbs had very short lifespans, were too expensive, or used too much energy.
In 1904, Hungarian Sándor Just and Croatian Franjo Hanaman were granted a patent for a tungsten filament lamp that was brighter and longer-lasting than the carbon filament bulbs. However, it was William D. Coolidge who is credited with developing the tungsten filaments that would dominate lighting for a century. Working for General Electric, Coolidge used his deep knowledge and experience to produce ductile tungsten filaments that were flexible enough to bend without breaking. By 1911, General Electric had begun selling incandescent light bulbs with ductile tungsten wire, and licensed Coolidge's technology to other bulb makers.
Today, tungsten is still the primary material used in incandescent bulb filaments.
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Later improvements
While Thomas Edison is often credited with inventing and commercialising the first incandescent light bulb, several inventors contributed to the development of the technology. These include Alessandro Volta, Humphrey Davy, Joseph Swan, James Bowman Lindsay, Marcellin Jobard, Warren De la Rue, Frederick de Moleyns, John W. Starr, Jean Eugène Robert-Houdin, Moses G. Farmer, Alexander Lodygin, Henry Woodward, and Mathew Evans.
After Edison patented his incandescent light bulb in 1879 and 1880, other inventors continued to make small advances. In 1882, Lewis Howard Latimer, one of Edison's researchers, patented a more efficient way of manufacturing carbon filaments. In 1903, Willis R. Whitney invented a treatment for these filaments that allowed them to burn bright without darkening the insides of their glass bulbs. In 1904, tungsten filament bulbs were invented by European inventors. These bulbs lasted longer and produced a brighter light compared to carbon filament bulbs.
In 1910, William David Coolidge, an American physicist with General Electric, improved the company's method of manufacturing tungsten filaments. Tungsten has the highest melting point of any chemical element, making it an excellent material for lightbulb filaments. However, the machinery needed to produce super-fine tungsten wire was not available in the late 19th century. In 1913, Irving Langmuir discovered that placing an inert gas like nitrogen inside the bulb doubled its efficiency.
Over the next 40 years, scientists continued to make improvements that reduced the cost and increased the efficiency of incandescent bulbs. However, by the 1950s, researchers had only figured out how to convert about 10% of the energy used by an incandescent bulb into light. This shifted the focus to other lighting solutions, such as fluorescent lamps and light-emitting diodes (LEDs).
In 1962, Nick Holonyak Jr. invented the first visible-spectrum LED in the form of red diodes, followed by pale yellow and green diodes. In 1976, Edward Hammer at General Electric created the first compact fluorescent light (CFL) by bending the fluorescent tube into a spiral shape. Despite these advancements, incandescent bulbs remained popular due to their low manufacturing costs and compatibility with alternating and direct currents.
In recent years, there has been a phase-out of incandescent light bulbs due to their inefficiency. Various countries and regions, including the EU, Ontario, and the US, have implemented bans or regulations to prohibit the sale and manufacture of inefficient incandescent lighting. This has driven the development and adoption of more energy-efficient alternatives, such as CFLs and LEDs.
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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, Joseph Swan, James Bowman Lindsay, Warren de la Rue, John W. Starr, Jean Eugène Robert-Houdin, Moses G. Farmer, Alexander Lodygin, Henry Woodward, and Mathew Evans.
Thomas Edison patented the first commercially successful incandescent lightbulb in 1879 and again in 1880. He discovered the best mixture of thin carbon filament design and used better vacuum pump technology, making him the first to develop a truly commercially viable lightbulb.
In 1800, Italian inventor Alessandro Volta developed the first practical method of generating electricity, the voltaic pile. Humphry Davy used the voltaic pile to create the world's first electric lamp in 1802. Joseph Swan created the first successful incandescent filament electric lamp and gave public demonstrations of it in 1878 and 1879.
