# Light Paper

1272 Words 6 Pages
Light is a kind of electromagnetic radiation. It is made up of vibrations between a certain group of frequencies. When light is given off from a source it spreads out over a larger area. Scientists are still dumbfounded by exactly what light is.

When light hits a smooth or polished surface it "bounces" off at the same angle that it hit. Reflecting telescopes are made of concave mirrors and they have helped astronomers chart the universe because the mirrors interact with each other to magnify what is being observed.

Refraction is when light bends as it goes through glass, water and other transparent objects that are denser than air. A prism is an instrument that spreads out a ray of light into the color spectrum. A lens
Another way

light acts as particles is that atoms absorb photons and are given

energy. Then the excited atom gives off another photon in return for

the photon that it was given.

The Dutch mathematician, astronomer, and physicist, Christiaan

Huygens countered Newton with the wave theory. He figured he could

prove Newton wrong because if photons were drawn towards water

and other dense materials, its velocity would become greater because the force of being pulled would speed it up. And it was proven that light slowed down when it went through such materials. But Huygens still couldn’t explain how a light wave could give atoms energy, or how photons couldn’t.

Now scientists believe that the two theories complement each other. As a result the quantum theory came into being. The quantum theory says that in some ways light acts as a series of particles and in other ways acts as a wave.

The French physicist Armand Hippolyte Louis Fizeau was the first person to successfully measure the speed of light. The speed of light is 186,282.396 miles per second in a vacuum such as space. The speed of light is 3% less in air than in a vacuum; water is about 25 percent less, and in glass is 33%.

Reflection

As discussed at the beginning: when light hits a flat,

smooth/polished surface it "bounces" back at the same angle that it hit.

The ray that the light hits

## Related Documents

• ###### Doc, Docx, Pdf, Wps, Essays

E-mail: avison@essec.fr Abstract In this rejoinder we discuss six commentaries to our earlier debates and perspectives paper `Is theory king?: questioning the theory fetish in information systems’. We argue again for theory light rather than theory free papers, we discuss the potential scope of theories in information systems, we reﬂect on our terminology and exemplar paper, and we discuss the relevance of our arguments on quantitative research before looking at potential further opportunities…

Words: 3151 - Pages: 13
• ###### Essay Separation Of Metal Ions By Chromatography

Experiment 1: Separation of Metal Ions by Paper Chromatography Purpose The purpose of this experiment is to separate an unknown mixture of metallic ions by using the separation method of paper chromatography as well as to determine the identities of each ion in the mixture based on the position, colour, and retention factor of the spots created. Procedure 1) Wearing gloves, use a pencil and ruler to draw a line 1.5cm from the bottom of the paper. On this line, mark 8 dashes 3cm from the sides…

Words: 1047 - Pages: 5
• ###### Brightness of Paper

Theory and Concept of Test Brightness of paper is important to determine and understand because the brightness of paper will directly affect the print quality and color of a job. Brightness is different from “whiteness” of paper in that a “bright” paper can be blue, red, green, or any other color since the test measures the amount of diffused light reflected from the surface, as opposed to the amount of the visible spectrum reflected. Brightness of paper, as defined in Tappi T452, is determined by…

Words: 1383 - Pages: 6
• ###### Essay The Great Gatsby By F. Scott Fitzgerald

Darkness and light have been used as symbols for thousands of years. When someone is "in the spotlight" they want to be seen. They want everyone to know everything about them. More often than not, being in that spotlight involves chasing a dream. Spotlight is often associated with celebrities or rising stars who are in the spotlight, chasing a dream. They follow wherever the light may take them to discover their dreams. It 's blinding. Blinding light can also be associated with a certain harshness…

Words: 2506 - Pages: 11
• ###### Essay A Ray Of Light Travels

A ray of light travels in a straight line. This is true until it passes from one medium (eg. air) into another medium (eg. glass) of a different optical density. When this happens, the ray of light changes speed causing it to bend either towards or away from the normal which is an imaginary line at 90 to the interface between two mediums. This is called refraction. How much it bends depends on the refractive indices of the two mediums which is a ratio of the speed of light in one medium compared…

Words: 1221 - Pages: 5
• ###### Light and Photosynthesis Essay

Introduction. Light is a very important factor in the rate of photosynthesis, in my project I am going to test that plants do need light in order to photosynthesise. It will be very interesting to see how light will influence the rate of photosynthesis in plants and what will happen if they do not get the required light in order to produce starch . The plant I have chosen to do is a Geranium which is a dicotyledonous plant found in the dry and hot regions of South Africa. Aim To see whether light effects…

Words: 1269 - Pages: 6
• ###### Essay on Pinhole Optics

like, a small hole made with a pin. Experiments with pinholes are useful because the way light travels through the hole is very similar to the way light travels through the eye. The pupil, the small black area in the center of the eye, acts similarly to the pinhole. It is small compared to the big things in the world you are looking at. The retina, the back part of the eye where special cells sense light and send signals to the brain via nerves, acts similarly to the screen in the camera.…

Words: 1990 - Pages: 8
• ###### Essay on Ap Biologly Photosynthesis Lab Report

more tightly to the paper than the other pigments. Chlorophyll a is the primary photosynthetic pigment in plants. A molecule of chlorophyll a is located at the reaction center of the photo systems. The pigments collect light energy and send it to the reaction center. Carotenoids also protect the photosynthetic systems from damaging effects of ultraviolet light. Problem: What is the effect of light and temperature on plants? Hypothesis: If there is a change in the light received or temperature…

Words: 1327 - Pages: 6
• ###### Factors Affecting Seed Germination Lab Essay

Question What is the effect of dark and light on the germination of radish seeds? Hypothesis I predict the seeds grown in the light will germinate twice as much as the ones grown in the dark. Materials/Setup Paper towels 2 petri dishes 10 radish seeds Water Plastic container A weight A folded piece of paper Procedure 1. Take a paper towel and cut out two circles that are the same size as the base of the petri dishes. 2. Wet each paper towel circle with 5mL of water. 3.…

Words: 807 - Pages: 4
• ###### Invisible Cloak Essay examples

To achieve the feat of “cloaking” an object, they have developed two kind of materials that being used for invisibility, what are known as metamaterials, some of which can bend electromagnetic radiation, such as light and thermal and also optical lens, that able to bend the incoming light ray from in order to around an object, giving the appearance that it is not there at all. Introduction Definitions and Background The desire to make objects or people invisible has a long history:…

Words: 1393 - Pages: 6