Laser level, protractor, plate glass, plain paper, pencil, data sheet. The primary purpose of the lab is to study hookes law and simple harmonic motion by studying the behavior of a mass on a spring. A charles law experiment for beginning students journal of. To use snells law to determine the index of refraction n of a piece of glass and to use it to find the speed of light in that glass. Snells law was used to calculate the angle of refraction. This will be verified in the experiment by measuring the light intensity using a light sensor. In this note we propose an alternative approach to the experimental study of hookes law that takes into account the variation of the elastic constant as a function of the initial length of the spring. The polarization of light and the malus law using smartphones arxiv. In this experiment you will verify ohms law in several different circuits using a current. A popular experiment in basic thermodynamics, both at a highschool and at university level, is the determination of the specific heat of solids and liquids using a. In 1831, michael faraday showed that a changing magnetic field can induce an emf in a circuit. 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. The objective of this lab is to determine the resistance of several resistors by applying ohms law. Snells law and the index of refraction introduction.
It is shown that the sizes of the angles of incidence and refraction are related to the speed of the light through the medium. To demonstrate this, a volume of enclosed air located in a hollow metallic sphere. The bending of a light ray as it passes from air to water is determined by snells law. The validity of amontons law for ideal gases is demonstrated using normal air. This law was discovered in 1621 by the dutch astronomer and mathematician willebrord snell also. Accumulator or battery eliminator, ammeter, voltmeter, rheostat, coil, connecting wires and key if necessary. The indices of refraction n i and n r are given and the angle of incidence can be measured. Evaluation of experimental errors in boyles experiment scielo. The pdf version of the teacher toolkit on the topic of refraction and snells law is displayed below. The experiment consists of a single thin bundle of light rays exiting a light box. In each of these two example problems, the angle of refraction is the variable to be determined. Malus law, intensity, electric field and crossed polarizers. Snells law, in optics, a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each.
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