Refraction

of incidence, and the angle of refraction. As well as the angle of the light that reflects. Repeat step 1 but water to air. Repeat step one but change water to glass Shine the light perpendicular to the base of a prism. Add more prisms to the mix. The materials we use is air, water, glass, light, and prisms. Air to water (lower density to higher density). The angle of incidence was 30 degrees,the angle of reflection was also 30 degrees. The angle of refraction was 22 degrees, which means that

it is refracted. You can see this by putting a pencil in a cup of water. The pencil appears to bend, but it isn’t actually bent. Again, this is because of refraction. Putting a pencil in a cup of sugar water would also cause refraction, but the amount of light refracted would be different. This is because of the changes in density. Refraction is the bending of light as it goes through a medium. Light waves travel very quickly and can pass through transparent materials fairly easily, but the waves

include refraction, index of refraction, refractive index of a material, critical angle and total internal refraction. Refraction is the bending of light when it moves from one material to another. Next, the index of refraction or refractive index, is a number that tells how the speed of light in space compares with the speed of light in a given substance. For example the refractive index of water is 1.33. The critical angle is the angle of incidence that results in an angle of refraction of 90°.

Refraction is when light changes speed as it travels from one medium to another. This is because the optical density of the medium differs depending on what the medium is. The word medium is used to describe regions that will allow light waves to pass through it. A few examples of mediums would be air, glass, and water. Light can travel through all of them but, due to the different optical density of the mediums, not at the same speed. The more optically dense the medium is the slower light will

Period 4 27 October 2014 Snell’s Law – The Law of Refraction Snell’s law is a formula used to express the relationship involving the angles of incidence and refraction, when referring to a wave impinging through a boundary between two different isotropic media. The law follows from the boundary condition that a wave is continuous across a boundary, which requires that the phase of the wave be constant on any given plane. The law of refraction was originally and accurately described by Ibn Sahl

Refraction The term refraction is the bending behaviour of light when it passes through from one transparent medium to another transparent medium such as water, glass, vacuum, air, plastic etc. Refraction of Light The refraction of light shows that light refracts every time it travels at an angle from a medium to the next medium with a different refractive index (optical density). The refraction of light demonstrate that change of direction which light travels is caused by a change in speed of

Experiment 1, Refraction The speed of light in water is slower than the speed of light in air, so when light goes from a slow medium (water) into a fast medium (air), it changes directions and looks to be “bent”, when the pencil is in fact straight. Since the light is coming from inside the water, a slow medium, into air, a fast medium, it turns away from the normal. Figure 1: Refraction of a pencil in a cup of water. The pencil appears to be bent despite due to refraction. Experiment

these instruments and devices were used to examine the relationship of the angle of incidence and the angle of refraction for a light ray passing through a rhombus prism, seen in Procedure B. Lastly, in the third part of this experiment we used an acrylic rhomboid to observe the dispersion through the lens, seen in Procedure C and then proceed with calculating the different indices or refraction for different colors of light, seen in Procedure D. Theory Part A: Reflection We observe the Law of Reflection

experiment four different experiments were performed to explain the concepts of reflection, refraction, dispersion and Brewster’s angle. The purpose of the first experiment is to analyze the incidence and reflection angle to understand how light reflects off a flat, convex, or concave mirror. In the second experiment a light ray is passed through a rhombus prism to discover the relationship between the angle of refraction and incidence. For the third experiment calculations were made to find indices for the

Pre-Lab Discussion Laser Safety Lasers in the classes IIIa and IIIb are capable of causing damage to the eye when a laser in one of these classes is directly exposed to a person’s eye, or in some cases, when reflecting off of a smooth surface. Class IIIa lasers have a power output of less than 5 mW, whereas class IIIb lasers can have a power output between 5 and 500 mW, and thus high-power class IIIb lasers can be a fire hazard and cause minor burns to the skin. The “blink reflex” is a protective