filament as a function of the filament’s temperature John Greavu Partner: Nicholas Souhleris School of Physics and Astronomy‚ University of Minnesota‚ Minneapolis‚ Minnesota 55455 9 May 2014 The black body spectrum emitted from a standard incandescent lamp was measured as a function of its temperature. Using a miniature spectrometer set‚ we have experimentally verified the Stefan-Boltzmann law to 2 in addition to getting an experimental value for k/hc. Our average value for k/hc was (66.59
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electricity. By simply going around a home and shutting off the lights a person can decrease the cost of their electricity bill. The nationwide average for electricity is roughly $0.10 per kilowatt hour (Trent1). A compact fluorescent light bulb will use about 20 watts per bulb while an incandescent light bulb will use 50-60 watts per bulb. Leaving four 20 watt CFL bulbs on for two hours will cost about 1.6 cents. The incandescent 60 watt bulbs would cost 4.8 cents for those two hours. Some homeowners
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the spectrum of light emitted by a star‚ we can tell something about its average surface temperature. i) If we observe a star’s spectrum and find that the peak power occurs at the border between red and infrared light‚ what is the approximate surface temperature of the star? (in degrees C) - The approximate temperature would be 3767 degrees C ii) If we observe a stars spectrum and find that the peak power occurs at the border between blue and ultraviolet light‚ what is the surface
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fluorescent light bulb‚ it is much more efficient than an incandescent bulb. They last longer and use 1/4 the amount of energy. A normal incandescent bulb lasts 750 hours but a fluorescent bulb will give off the same amount of light yet last for 7‚500 to 10‚000 hours with 1/3 of the wattage. Also within a fluorescent light bulb’s life time it will stop 1‚000 pounds of carbon dioxide from going into the atmosphere‚ if it is substituted for the traditional bulb. By installing a single fluorescent light bulb
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to improve/create the lightbulb as we know it today. The first man to ever demonstrate that you can produce light in a controllable way using incandescence (heating a filament using electricity) was Ebenezer Kinnersley. He did this in 1761. Humphry Davy used a gigantic battery to light up a platinum filament in 1802. In 1835‚ James Bowman Lindsay showed the public a constant electric light at a meeting in Dundee‚ Scotland. This was the first fully functioning electric lightbulb that could be used
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Question: “It is more important to discover new ways of thinking about what is already known than to discover new data or facts. To what extent would you agree with this claim?” According to the Miriam-Webster dictionary‚ data can be defined as factual information used as basis for reasoning‚ discussion‚ or calculation. By the same dictionary‚ fact is defined as a piece of information presented as having objective reality. In this essay‚ it is vital to distinguish that the issue the question
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Thomas Edison’s invention of the lightbulb was so significant that it is still effecting society to today. Thomas Edison’s lightbulb had to consist of three things‚ the first being a durable incandescent material‚ the second thing the lightbulb needed was to eliminate the oxygenation from the bulb‚ and the last thing the lightbulb needed was a filament material of high resistance. The first lightbulb was going to be made out of platinum‚ however‚ platinum was very expensive to distribute to homes
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Many things these days are taken for granted and used with great liberty‚ but none more prevalent than the consumption of petroleum based fossil fuels worldwide. As stated in The International Energy Outlook 2006 (Energy Information Administration‚ 2006a)‚ "World oil consumption rose by about 1.2 million barrels per day in 2005‚ after an increase of 2.6 million barrels per day in 2004". Current projections indicate increasing demand for oil by the transportation sector‚ where there is currently not
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at when he flew his kite during a thunderstorm or when light bulbs were installed in houses all around the world. The truth is that electricity has always been around because it naturally exists in the world. Lightning‚ for instance‚ is simply a flow of electrons between the ground and the clouds. When you touch something and get a shock‚ that is really static electricity moving toward you. Hence‚ electrical equipment like motors‚ light bulbs‚ and batteries aren’t needed for electricity to exist
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Importance of electrical services in buildings Electricity has been part of our lives. It has brought many things that surely have made many wonders and life would seem so hard without it. Electricity powers our light‚ heating‚ electronic appliances such as computers and television‚ and a host of essential services that we take for granted. However‚ electricity has much more important aspects because it is a fundamental feature of all matter. Electricity is the force that holds together the
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