This website uses cookies to ensure you have the best experience. Learn more

Reflection And Refraction Experiment Essay

1346 words - 5 pages

INTRODUCTION:The purpose of this experiment was to test the validity of the Law of Reflection and Snell's Law (Also known as the Law of Refraction).Reflection is defined as the reversal in direction of a particle stream or wave upon encountering a boundary. The law of reflection states that the angle of reflection and angle of incidence are equal, with each angle being measured from the normal to the boundary:Refraction is defined as the bending of light that takes place at a boundary between two materials having different indices of refraction due to a change in the speed of light as it passes from one medium to another. The Law of Reflection (Snell's Law) states that the ratio of the sines of the angles of incidence and refraction is equivalent to the ratio of velocities in the two media, or equivalent to the opposite ratio of the indices of refraction: During the course of analyzing our data, we calculated the index of refraction for the plastic lens and thereby the speed of light in the plastic.The expected results that would need to occur to prove the validity of the Law of Reflection would be that when we conduct the experiment, the measure of the angle of incidence would have to be equal to the measurement of the angle of reflection, because this is what the Law of Reflection states.The expected results that would need to occur to prove the validity of Snell's Law would be that as light passes the border between media, depending upon the relative refractive indices of the two media, the light will either be refracted to a lesser angle, or a greater one.PROCEDURE:The materials that were needed for this experiment were: a table, a pencil, paper for notes, a laser, a platform, and a lens. The setup of the materials was as shown: Initially, before we began our experiment, we used the adjustment screws on the back of the laser to make sure that the laser-line went straight down the "normal" line on the platform.Part One:We aligned the flat side of the cylindrical lens along the line on the platform labeled "component." We were able to just barely see the edge of the "component line" under the edge of the lens. When it was precisely aligned, we saw that the laser followed the normal line all the way through the lens and across the platform, passing through the "zero" angle on both sides. We spent a minute adjusting the lens until we were satisfied and had it in the right position. The lens slipped at times during the experiment, and we recentered it on the "zero" angle.Without moving the lens, we rotated the platform in both directions and observed the incident ray, the faint ray that was reflected from the flat surface, and the more intense refracted ray that exited the curved surface. We noticed now that all three rays fell along a measured angle from the normal line.On a separate sheet of paper, we created Table 1 with seven columns and ten rows to document the data we observed while we conducted our experiment.Not moving the lens, we...

Find Another Essay On Reflection and Refraction Experiment

Does Light Bend towards or away from the Normal as it Enters the Glass Block

1666 words - 7 pages colour and allows us to see. Reflection is light radiation that is viewable by the eyes of humans. It is part of the reason why we can see so well. (Wikipedia, 2014) Another element of light is refraction. This is when a wave of light changes direction (bends) when it passes through different mediums, such as water, glass and others. (See diagram 1.1) Total internal reflection is another property that light can have under the correct circumstances

Physics in Cameras Essay

932 words - 4 pages focusing the light rays. Light refraction bends and refracts the light to create an image that is clear enough to capture. Physics can be related to cameras because cameras use light reflection. Light reflection can be found on objects that do not emit their own light. This is what allows the object to be seen. For example, a room that is completely dark will not have any light reflected anywhere. This is why no object in the room can be seen

Light Paper

1281 words - 5 pages .). ______________________________________________________________________ Welcome to the wonderful world of light, including the refraction and reflection of light. Refraction is the bending of light when it travels through a denser, or thicker material, such as water. Reflection is a bit different though; when light hits a smooth or polished surface it "bounces" off the surface at almost the same

physic

1629 words - 7 pages inside the glass, and at a sufficiently high obliquity the angle of refraction can actually reach 90°. In this case the emerging ray travels along the glass surface, and the sine of the angle of incidence inside the glass, known as the critical angle, is then equal to the reciprocal of the refractive index of the material. At angles of incidence greater than the critical angle, the ray never emerges, and total internal reflection occurs, for

Light and colour

1582 words - 6 pages reflection that Ill, but when you are at an angle, look closely, you can see a reflection of the sky. So the ocean only has partial reflectivity.RefractionWhen scientists talk about refraction, they use a formula. "n = c / v" "c" is the speed of light in a vacuum, "v" is the speed of light in that substance and "n" is the index of refraction. According to the formula, the index of refraction is the relation betIen the speed of light in a vacuum and

Sir Issac Newton

313 words - 2 pages explained that reflection and refraction cause colors to appear by separating light into its components. He experimented his theory of colors by passing a beam if light through a prism, which separated the beam into different colors. In 1704, he published Opticks, which explained his theories. In conclusion, Sir Isaac Newton not only contributed to physics, but other aspects of science. He theories are known today. And we know him as one of the greatest scientist ever to be known by man.

Rip current analysis

669 words - 3 pages Multiple satellite methods exist for remote sensing of rip currents each with their own benefits and drawbacks. Photobathymetry, currents interaction using with Synthetic Aperture Radars (SARs), wave refraction, and wave kinematics bathymetry (WKB) are current technologies that are used most often due to the current satellite knowledge. Each of these techniques can be applied using low orbit satellites that are already currently orbiting Earth

Atomic Structure

1068 words - 5 pages were discovered by James Chadwick in 1932. The neutrons were found to have the mass nearly equal to the protons i.e. 1.67x10-27 kg and no net charge on them. 1.3 WAVE NATURE OF LIGHT AND ELECTROMAGNETIC SPECTRUM The light was regarded as a stream of particles according no Newton. He proposed corpuscular theory of light. This theory could explain several properties of light like reflection refraction etc. It failed to explain interference

Sir Issac Newton

709 words - 3 pages science. Discoveries which are still proving to be useful to us today. In 1664 while still in school, Newton read the works of Robert Boyle and Robert Hooke, two English physicists who had studies optics and light. He also parused the physics and mathematics of René Descartes, a French scientist and philosopher. After his reading was done, Newton studied the refraction of light through a glass prism. After many years of experimentation Newton

The Physical Properties of Light

1378 words - 6 pages moving along an altered path. This was greatly supported the particle theory, and gave some support to how refraction would work under the particle theory. Nevertheless, the particle theory alone has still been found to possess some inconsistencies, thus it cannot alone describe the nature of light.If the two leading theories for what light is are proven to have so many inconsistencies, what exactly can light be? Some would say that light is both a

An Experiment to investigate the lateral displacement of a ray of light through a rectangular block of a transparent material

3426 words - 14 pages PLANNING: -Title: - An Experiment to investigate the lateral displacement of a ray of light through a rectangular block of a transparent material.Aim: - To investigate the lateral displacement for different angles and how the displacement depends on the angle of incidence when a ray of light enters the Perspex block.Scientific Background: -Refraction occurs when the speed changes when the lights travels from one medium to another medium. If the

Similar Essays

Reflection And Refraction Essay

627 words - 3 pages Will the future of optics still be based on mirrors, prisms and lenses? To investigate this question some background information on the key concepts of light, reflection and refraction will be covered first. Light is defined as electromagnetic radiation of any wavelength. Light is also known as luminous energy or radiant energy. The speed of light is

Introduction To Reflection And Refraction Essay

5216 words - 21 pages conventionsin lens and mirror calculations. It seems that no matter how hard we try, we always getthe sign wrong! This aspect will be dealt with in Chapter 2. The present chapter dealswith simpler matters, namely reflection and refraction at a plane surface, except for abrief foray into the geometry of the rainbow. The rainbow, of course, involves refractionby a spherical drop. For the calculation of the radius of the bow, only Snell's law isneeded, but

Refraction Of Light Essay

754 words - 4 pages without much modern tools: manipulation of light. Manipulation of light consists of three central keys: reflection, refraction, and absorption. Waves bounce, bend, and soak as an effect of these forms of manipulation. We’ll focus on refraction, the reason how light waves bend. Rays, depending on the material it travels trough, move in a range of speeds. It travels through vacuum the fastest since it is vacant space. Air comes next in the list

Refraction Of Light In Perspex Prisms

654 words - 3 pages of refraction and the ray will bend towards the normal∞ If it is travelling from denser to less dense, the ray will bend away from the normal.∞ In perspex, at an angle of approximately 42, the angle of refraction is 90 (to the normal) which makes 42 the critical angle for perspex.∞ The angle of incidence is not directly proportional to the angle of refraction in perspex∞ Once the angle of incidence exceeds 42 (critical angle in perspex), total internal reflection occurs where the ray does not exit through the perspex. Instead, it is reflected at an angle equal to the initial angle of incidence.