The first incandescent light dates back to 1802, when English chemist Humphrey Davy “passed a current through a platinum wire” . Davy then saw the platinum wire glow and produce a fleeting light. However, the light was neither bright nor long lasting enough to be a reliable light source . In February 1879, English chemist Joseph Swan (Figure 4) created the first practical light bulb. Swan build the light bulb based on English scientist Warren De La Rue’s idea of enclosing the filament wire in a vacuumed tube, which improved the longevity of the filament by preventing it from oxidizing . Swan also Figure 4: Joseph Swan reduced the cost of the light bulb by using a much cheaper material, carbon, for the filament so that general …show more content…
Tungsten, a metal commonly used for filaments, and cement, a binder material, are mixed up in a container and then “pulled through a die — a shaped orifice —into a fine wire” . Next, to produce coiled shaped filament, the wire is curved around a pen shaped metal bar named mandrel . Then, the wire is heated to be softer and properly shaped . At the end, to separate the wire from the mandrel, acid is used to dissolve the mandrel . Figure 16: Manufacturing Process of Filaments 3.3 Assembly of Parts First, clamp a conducting wire to each end of the filament and then mount the conducting wires to a glass support . Next, vacuum the bulb and fill it with a mix of argon and nitrogen gas . Then, seal the base and the bulb, with two conducting wires connected to the two electrical contacts on the base respectively . Finally, test if the light bulbs work properly and then ship them to customers . 4.0 Using a Light Bulb 4.1 How to Use a Light Bulb Make sure to turn off the power. If the light bulb is controlled by a switch, turn the switch off . If the lamp is plugged into the wall, unplug it
In 1895, Professor Wilhelm C. Roentgen, a German physicist, was working with a cathode ray tube, much like our fluorescent light bulb. The tube consisted of positive and negative electrodes encapsulated in a glass envelope. On November 8, 1895, Roentgen was conducting experiments in his lab on the effects of cathode rays. He evacuated all the air from the tube and passed a high electric voltage through it after filling it with a special gas. When he did this, the tube began to give off a fluorescent glow. Roentgen then shielded the tube with heavy black paper and discovered a green colored fluorescent light could be seen coming from a screen located a few feet away from the tube.
The light bulb is the way we see in the dark, the way we find our way, the way we know when to go at a stoplight. How did Thomas Edison achieve this invention? Knowledge. Knowledge of electricity and the needs of those around him. In The Great Gatsby, Daisy Buchanan claims that she wants her daughter to be “a beautiful little fool.” In other words Daisy is saying that ignorance is bliss. Some others believe that knowledge is power. The advancement from candles to light bulbs changed the culture entirely. People could easily do the work they needed to after sunset, and it even led to more inventions. We need knowledge to advance, and for this reason powerful knowledge is more valid than blissful ignorance.
Some of his inventions include the photograph, the motion picture the electrographic vote recorder, and his most famous invention the light bulb. Thomas edison started working on his igea of a light bulb in 1878. He envisioned it as a oil and gas based light that would be longlasting that could be used indoors instead of having to use the outdoor light. He based his ideas on other people's inventions such as Henry Woodward and Mathew Evans. He found that there were many flaws with where light sources and planned on creating a whole different approach to building his light build that would fix all on the problems. Thomas Edison light bulb consisted of a carbon filament. It took him many tries before he successfully tested his lightbulb which lasted thirteen and a half hours. His carbon light bulb became a patent on November 4, 1879. Even though the light bulb was already patent Thomas Edison still found more ways to improve it. He discovered that carbonized bamboo filament could last 1,200 hours, so Edison decided to form the Edison Electric Light Company where he could publicly sell his new light bulbs and have access to new supplies where he can improve and manufacture his carbon light bulbs. Thomas edison created a whole new way of access to working and living environments that impacted history in a great
The demonstration of the Incandescent light bulb was held in downtown New York City, New York at financier J.P Morgan’s office. The incandescent light bulb had instantly spread throughout the majority of the American homes and offices. The first incandescent light bulb used a carbon base inside a glass bulb until it became hot to produce a glow, (CITE). Many of the first designs were burning up quickly due to a poor vacuum design. Gas companies once dominated the industry were having a difficult time promoting the arc lamp due to the new invention of the Incandescent light bulb, (CITE). By the year 1892, the distribution of electric power replaced the gas setup, which had formally set up throughout the cities and the majority of the
When Thomas Edison invented the light bulb in the late 1800’s people were too amazed by the fact that they could effectively light up the night to bother considering how much energy was required.1 As time has marched forward, the priorities and desires of mankind have evolved. With growing concerns over world energy reserves and power production, many around the world have searched for ways to reduce energy consumption. One of the explored ideas was the LED light bulb. Consuming far less energy than a traditional light bulb while enduring a longer period before expiring, the LED light bulb is an ideal replacement of the traditional bulb in regards to the preservation of energy. Another lighting idea that panned out was the florescent light bulb. These bulbs employ a different method of light production when compared to LED lights, but they have similar results of energy cost reduction and longevity. It may seem like a small thing to reduce the power consumed by a light bulb, but when all of the lights of the world are converted the benefits will add up to be something worth investing in.
Williams, B. 1999. A History of Light and Lighting. [online] Available at: http://www.mts.net/~william5/history/hol.htm [Accessed: 5 Jan 2014].
He worked with George Westinghouse and Nikola Tesla during the late 19th century so bring electric lighting into houses and offices. Incandescent lighting is when light is produced by heat. Around 1870s, there was already lighting called arc lighting. Those were placed in large indoor rooms such as a stage and outdoors in streetlight lamps. Arc light was proven to be impractical in housing or offices. During the 1879, Edison did research in an entire electrical systems which would deal with a generator, a distribution system, and a light bulb. His main focus though was the light bulb. It needed to be strong enough so that the heat wouldn 't cause the light bulb to explode. He worked with carbon filaments which burned inside a glass globe as electricity flowed through the filaments. During the same year, Edison worked with Francis Upton to make a generator that produced direct current, which is also what Edison is very well known for. Direct current was used for incandescent
Light advancement of the gaslight and electric light, particularly drew concern since light without wicks deviated from people’s understanding of normal light and in the case of the light bulb, light without flame invoked the same curiosity and confusion. Furthermore, gaslights generated a fear of gas poisoning, contamination, pollution, and explosion. For instance, a gas explosion in Paris in 1862 and another in London in 1865 heightened people’s fear of the gas lighting system. As a result, decided approval by the gas industry and commissions established by these governments attempted to reassure the public that this light method was safe and effective. In addition, the conversation between a couple and a man about electric light in a theater described at the end of “The Lamp” illustrates the ignorance members of the public had in regards to artificial lighting technology.
Electricity was first tested by Benjamin Franklin with his famous kite and lighting experiment (http://www.ushistory.org/franklin/info/kite.htm). Before the kite experiment, he had a lightning rod setup on the top of his house for electrical experimentations. (http://www.ushistory.org/franklin/info/kite.htm). After Franklin, Thomas Edison created light for our homes and businesses, and it was the beginning of great advancements in the electrical industry. Not only did he create the light bulb, but he also invented the microphone, electric pen, telephone receiver, storage battery, and many other inventions before his death. Edison had 1,093 inventions that helped revolutionize of what is today known as electricity (http://www.fi.edu/learn/sci-tech/edison-lightbulb/edison-lightbulb.php?cts=electricity).
Introduction: I chose this topic; because I thought it would be fun to make a four-way switch that turns on the same light. I got the idea to make one when I went online to search for the perfect project idea. I found information about a three way light switch and decided that this is what I want to do, but to make it more difficult I decided to create a four way light switch instead. It sounds like the perfect experiment to try. I felt that if I did this project I would learn more about electricity and the way it works. What is a four way light switch? A four way light switch is an electric switch that uses electricity to power a light bulb that can be turned on by four different places and not just one or two. The great thing about a four way light switch is that there can be more then one way to turn on one single light. In order to achieve the perfect four ways light switch the four-way switch must be in the center of two three light way switches in order for the whole proses to work. A hot wire or wire of 120 volts will connect from a battery to the light bulb. A wire that is neutral will also be connected from the battery to the light bulb. The third wire can’t be neutral or 120 volts (hot wire) and will just float near the 120-volt wire. The third wire that is neither neutral or 120 volts, and 120 volt wire will connect when the switches are turned on and will produce the light. When the light will be turned on the switches should be one circuit in order for the light bulb to turn on and the electrons to travel through the circuit. The switches must be either up or down at the same time in order for the electricity to flow. If one of the switches is up and the other is down the light will not work. If one o...
Before lights were placed on trees, candles were used instead. It is widely believed that Martin Luther, the 16th Century Protestant founder, first added candles to trees. He was walking home on a winter night while writing a sermon, when he saw the stars shining above the evergreen trees. He noticed how beautiful the view looked, and in order to recreate it for his family, he placed lighted candles on his family’s Christmas tree. An inventor named Edward Hibberd Johnson hired Thomas Edison, then a 24 year old inventor, who later created the lightbulb. After Thomas Edison patented the light bulb in 1880, Johnson invested money in Edison’s bulbs and later used them to fashion Christmas lights. He recognized that candles are a fire hazard, and lights would provide a safer alternative. Johnson wired 80 light bulbs of three colors and strung them around his tree. The beautiful, bright tree attracted newspaper reporters and pedestrians who continued to come back each year. In 1894, President Cleveland put lights on the White House tree for the first time. The first set of lights was released to the public in 1900 and priced at $12 or $350 in today’s money. In 1914, the sale price for a 16 ft string of lights decreased to $1.75. Today, 150 million light sets are sold, and 80 million homes are decorated each year which equates to 6% of the United State’s electrical load each
platina contact wires'. The filament was made from a piece of carbonized thread. By New