Properties of Light

1260 words 6 pages
Show More
Danielle Silverstein
PHY 101 Section 10497
March 4, 2013

Light up this World

Purpose:

In this lab experiment, LED lights will be used to show how when E&M radiation is absorbed, the energy is converted to heat. A drop of isopropyl alcohol will absorb light energy of different colors, and the evaporation rate of the alcohol will be measured. The key to this lab is the evaporation rate is directly related to the energy of the light shining on the drop.

Materials: * * LEDs and circuits (from previous lab) * Pipette (or eyedropper) * Rubbing alcohol * Index card * 9-volt battery * Flashlight * Stopwatch * Small cardboard box (shoe box)

Procedures:

A three-sided enclosure from the cardboard box …show more content…

The frequency of the light, which is the number of wavelengths per seconds is calculated using the equation C=LN. L is the wavelength, N is the frequency, and C is the speed of light (Library Thinking Quest).

From the observations collected, the red LED light took the longest to dry the drop of alcohol and the blue dried it the fastest. Since the red light is on the lower end of the electromagnetic spectrum is used the lowest amount of energy. Just by looking at the brightness of the light, this conclusion was made but reassured after doing some research. The red light was very dim and faint compared to the brightness of the green and the blue. The blue was the brightest of the lights. This light used the most energy and is one of the farthest on the spectrum beside violet. Since the frequency of light increases as the color of light moves down the spectrum, the red light has the smallest frequency of 4.42*10-14, green has middle frequency of 5.66*10-14 and blue has the largest frequency of 6.37*10-14. The frequency is directly proportional to the energy produced by each of the light, which is shown in the graph above. The blue light had the highest frequency and that used the most energy. The red LED used the least amount of energy because it had the lowest frequency. The greater the frequency caused the alcohol to dry faster since it used more heat (energy) at one time.

Light energy and frequency are

Related

  • Organizational Security Plan
    1911 words | 8 pages

    Organizational Security Plan SEC 410 March 17, 2012 Brian Kissinger Basic Physical Controls Principles For every organization and business, physical security is a necessary aspect of protecting its facility, properties and employees against unwanted criminal activities. To choose the best organizational security plan possible, the organization must first conduct a thorough risk and threat assessment to assist in developing physical security plan. Basic physical controls focus on three levels….

    Show More
  • Rooms Division Operation Management
    21316 words | 86 pages

    | Rooms Division operation Management | Higher National Diploma In Hospitality Management | Bheemuck Chuvinee Neha & Emile Natacha Sandrine 11/19/2012 | Acknowledgement We would take this opportunity to first of all, express our words of gratitude to Mr Armooghum, who has been present for our queries. He has helped us a lot in solving confusions. The lectures have been helpful for the assignment, which have been one of the motivating factors. We would also like to thank the organizations….

    Show More
  • Does Gender Affect Color Preference?
    1220 words | 5 pages

    two-dimensional chart, called the CIE chromaticity diagram. This shows the relations among the different variables which produce the luminance of a specific color. The chromaticity diagram is a very opportune tool for those studying colors and its different properties. Among its many convenient features is the fact that it can single out a single color, so it is not….

    Show More
  • Legal Analysis of Indirect Expropriation Claim Under Korea-Us Fta
    3563 words | 15 pages

    Clause provides: “The State may grant the same right to foreigners [to acquire ownership of lands and other property], provided they agree...to consider themselves as nationals in respect to such property, and bind themselves not to invoke the protection of their governments in matters relating thereto under penalty, in case of noncompliance with the agreement, of forefeiture of the property acquired to the Nation.” Constitucion Politica de los….

    Show More
  • Book Review: Masters of Small Worlds by Stephanie Mccurry
    900 words | 4 pages

    wanted to do politically, it depended on the yeomen. However, the institution of slavery, as well as the unyielding attention towards property rights allowed the yeomen to feel their own sense of superiority, especially in their own households. In the south especially, the man was dominant. The book "Masters of Small Worlds" by Stephanie McCurry helps to shed some light into a forgotten time. Her painstaking search for supporting evidence is apparent on each page she writes. The amount of detail….

    Show More
  • Schwetzingen Castle and Mythology
    906 words | 4 pages

    Schwetzingen Castle and Mythology: The Connection The beauty and history of the grounds at Schwetzingen Castle is unmistakable. There is a deep history part of its roots in mythology. There are over one hundred statues that decorate the property with many that depict some kind of god, hero or representation of something in mythology. There are also many examples of other cultures scattered around the grounds. The way they are portrayed, their faces and poses tell the story of how they were perceived….

    Show More
  • Nevada Policy Scenarios
    1312 words | 6 pages

    Nevada Policy Scenarios Tammy Siirila HIS/311 September 15, 2014 Miguel Lopez Nevada Policy Scenarios Western Water Policy In light of population growth, Nevada continues to seek new resources for water consumption. Options include working with farmers and states such as California, Arizona, Idaho, and even the Country of Mexico. There are also various Lake Mead projects that could supply the needed water, as well as conservation projects within….

    Show More
  • Smoke Alarms
    1573 words | 7 pages

    doubt that something as critical as a fire could happen to them, this skepticism has led to more deaths and property damage than should have occurred. In the current generation smoke alarms are mandatory and advancements to the technology have been occurring rapidly. With the use of smoke detectors, firefighters have been more successful in the saving of lives and the protection of property. Even with smoke detectors getting more technologically advanced, researchers have still been looking into many….

    Show More
  • Tort Law in Construction
    4239 words | 17 pages

    enter onto private property, there would be no trespass as the person did not intend any violation. There will only be a criminal liability if there are aggravating circumstances such as criminal damage. By law, trespass for mesne profits is a suit against someone who has been ejected from property that did not belong to them. The suit is for recovery of damages the trespasser caused to the property and for any profits her or she may have made while in possession of the property. There are three….

    Show More
  • PHARMACEUTICAL PATENTING IN INDIA:PROBLEM OF PUBLIC ACCESS TO HEALTH
    5212 words | 21 pages

    public health is termed as real victory for the developing countries like India who are demanding the WTO council to consider the public health measures in the developing and the least developed countries on TRIPS minimum standards for patent. In light of the issues and the increasing evidence that patent protection was negatively affecting world health by erecting a barrier between sick people and the medication they need, the WTO amended TRIPS under the Doha Declaration to broaden the criteria….

    Show More

Popular Essays