Index of refraction lab report

Place the plexiglass triangle on a sheet of paper and trace around the edges. Since plastic is denser then air, the incident ray will bend away from the normal when it. Experiment%11% reflection,%refraction,%dispersion%% of. To use ray sightings to calculate the index of refraction of glass. In this relationship, na is the index of refraction in air, ng is the index of refraction in glass, qa is the angle between the ray and the normal to the airglass boundary in air, and qg is the angle between the ray and the normal to the airglass boundary in glass. Chemistry lab report by determining unknown by finding its boiling point and. Label your diagram and then place your answers in the data table provided. This is an example of how the lab report should be set up and what information is required.

When light travels from a material of higher refractive index to that of a lower refractive index e. D is the angle between the incident ray and the emergent ray. Physics lab report refractive index sine refraction scribd. In figure 1 sin i acao and sin r dbob since ao and ob are radii of the same circle, they are equal.

Well take angle measurements and use snells law to calculate the indices of refraction for each medium. This lab report uses those methods to determine index of. Reflection, refraction, and total internal reflection lab report example. Determination of the refractive index of a liquid using. Experiment has shown and will show again in this lab that the angle of the reflected light is equal to the angle of the incident light. 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. Determination of the refractive index of a glass block. Lab index of refraction of glass newton local schools. Refraction means the bending of a wave resulting from a change in its velocity as its moves from one medium to another.

Phys1540%%%%%4122014% % % % % % % % % experiment%11% % % % % reflection,%refraction,%dispersion%%. At incident angles above the critical angle there is no refraction. Apply snells law to determine the index of refraction for a clear slab of plastic acrylic use the critical angle to determine the index of refraction for a slab of plastic. Since plastic is denser then air, the incident ray will bend away from the normal when it travels through air. Using your protractor, measure the angle of incidence and the angle of refraction for each pin. As i researched the index of refraction, according to wikipedia the index is 1.

Apply snells law to a laser beam incident on the interface between media. The relationship between these variables is given by the equation. Physics refractive index of glass block experiment. Conclusion the objectives of this experiment are to study the refraction of light, to compare the angle of incidence in the firs medium to the angle of refraction in the second medium, and to determine the index of refraction of glass experimentally by applying snells law. Reflection and refraction are two commonly observed optical properties of light. Reflection and refraction s affiliation reflection reflection refers to the change in of the wavefront at a boundary between two different media whereby the wavefront gets back to the same medium in which it emanated. Light is an electromagnetic disturbance and, as such, is. Reflection and refraction university of calgary in alberta.

Because of the duality nature of light, it can be said that it travels in. Lab 2 lab lab 11 spherical mirrors and lenses lab 3 resistivity lab report lab 8 magnetic field of a slinky solenoid lab 2 ohms law lab report lab 5 direct current meters. The bending of a light ray as it passes from air to water is determined by snells law. You are asked to prove this relation in your prelab. Since each lab group will turn in an electronic copy of the lab report, be sure to rename the lab report template file. In part 1 of this lab you will investigate the bending of light as it. Snells law and the index of refraction introduction.

Reflection and refraction lab report example topics and. There might be a little bit difference with my predicted and measured angle of refraction, probably its because i used the index of refraction of crown glass, where crown glass is more optically denser than plexiglass. Determination of the refractive index of a glass block using law target group. Refraction of light part i this laboratory was designed to investigate the. The parameter n represents the index of refraction, defined as the ratio of speed of light in a vacuum, c, to the speed of light in the material, v. To observe and understand how a curved mirror focuses incoming parallel light rays to a single point. The index of refraction n should be a constant, independent of. Lab 10 reflection and refraction phy 156 physics ii. Determination of the refractive index of a liquid using the apparent depth method pack contents.

Find a materials index of refraction using snells law, pfunds method or critical angle. Experimental verification of laws of refraction of light. When you are ready to start the experiment, click on the begin button. Reflection and refraction experiment free essay example. This video will run you through on how the refractive index of a glass block can be obtained through the use of a series of carefully placed optical pins. Click on the name of the substance to change the substance. The following sections of this report will consist of the backround. If a light ray bends towards the normal line, this bending towards the. Diploma in basic education students also suitable for.

The refractive index n can also be defined for a particular material as the ratio of the speed of light in. Due to refraction, the velocity of transmitted light is. The angle of refraction is the angle between the normal and the refracted ray in order to figure out whether light is speeding up or slowing down, you need to compare the direction the light ray bends. In this lab your light will start in air so you will know n 1. When light travels through different mediums, it is being refracted. The index of refraction, or refractive index, of an optical material is defined as the ratio of the speed of light in a vacuum to the speed of light in the material. Take time to organize the materials you will need and set aside a safe work space in which to complete the exercise. Since nair is taken to be 1, in this way, the refractive index of a glass block can be calculated by. Since the frequency of a wave cannot change, independent of the source changing its frequency when it originally emits a wave, this change in wave velocity must result from a change in its wavelength in the second medium. The nature of reflection depends on the nature of the surface in which the wave comes into. Lab 11 dispersion from a prism and index of refraction.

Lab 9 reflection, refraction and total internal reflection. The purpose of this lab is to test snells law of refraction. Snells law stats that when traveling from a denser to a less dense index, the angle of incidence will be less then the angle of refraction. Describe how the speed and wavelength of light changes in different media. The index of refraction would be measured using the following methods. However, if we take the speed of light in air to be equal to the speed in vacuum, then na 1 and snells law becomes. Lab 8 reflection and refraction university of minnesota. When a monochromatic light ray single colorwavelength passes from air to a transparent medium. Abstract the index of refraction of a medium is a measure for how much the speed of light or other waves such as sound waves is reduced inside the medium.

Conclusion the objectives of this experiment are to study. The purpose of this experiment is to determine the index of refraction for various materials using different techniques. Whenever a light strikes the surface of some material at an angle, part of the wave is reflected and part is transmitted or absorbed. Experiments were conducted in this lab to understand the uses and capabilities of the michelson interferometer, to measure the wavelength of a laser light, and to measure the refractive index of air. To explore the behavior of a light ray as it passes from one transparent medium into another transparent medium. A refractometer measures the extent to which light is bent i. Each lab group should download the lab report template and fill in the relevant information as you perform the experiment. Index of refraction lab report measure the ce verifying snells law, between light in aim of cachedsimilarmeasuring classes home lab index wherecachedsimilarmeasuring the lateral displacement dispersion ii since the speed of the labfindingtheindexof due on or refractive refraction printer friendly version cachedsimilarphysics lab week dispersion from cachedlab the interaction between light.

A ray is a line that has an origin but does not have an end. Refraction of light lab report alevel science marked. Reflection, refraction and polarization introduction refraction when a ray of light strikes the surface of a piece of transparent material the beam is splitpart of the beam is reflected from the surface, while the rest is transmitted into the material. The downloadable protractor listed at the above web page is provided to students for inclusion in the data section of their lab notebook. Physics lab report refractive index sine refraction. Therefore, n sin isin r acdb the index of refraction of glass varies with its composition and with the wavelength of the light incident. Reflection lab included, labeled and organized all parts of the lab report. Lab 10 reflection and refraction phy 156 physics ii csi studocu. Phy pack 4 refractive index law 2 produced by physics group, university of cape coast, as part of a delphe funded project title. The angle d, known as the angle of deviation, is shown in figure 2. This law also applies to the bending of light by lenses and to the guiding of light by the fiber optic cables that carry modern communications signals.

In this lab, we will investigate the angles of refraction at the interface between two different materials, such as air and water. Describe the effect of changing wavelength on the angle of refraction. All angles in optics are measured with respect to the line normal to the surface. The refractive index of air with a michelson interferometer. Regularly, light, water and sound waves undergo reflection anonymous, 2010.

In this case, the indexes of refraction have been reversed. Next use snells law to calculate the experimental index of refraction for water based on the angle data for each pin. Instead, the entire ray reflects inside the acrylic. The parameter n represents the index of refraction, defined as the. Snells law applies to the refraction of light in any situation, regardless of what the two media are. We will use snells law for refraction to measure the refractive index of a glass plate and to analyze the phenomena of total internal reflection. This relationship between the angles of incidence and refraction and the indices of refraction of the two media is known as snells law. Physics lab report refractive index free download as word doc. The law of reflection snells 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.