Refraction of light question. five stars for whoever can help me.?
What happens to light as it passes through a prism. White light is composed of a continuous band of colors. The band of colors appears in the same pattern as the colors of a rainbow. This experiment was first done by Sir Isaac Newton (1642–1727). Newton let a beam of sunlight pass through a glass prism and observed the white light spectrum. In a vacuum, light of all colors travels at the same speed. When light passes through a material, such as glass or water, the red light at one end of the spectrum travels faster than the violet light at the other end of the spectrum. This difference in speed causes a change in the direction of light when going from air to glass and from glass to air. This change of direction is called refraction, and is greater for violet light than for red light. The speed of light in the glass depends on the color; thus we get a continuous band as in the rainbow.
What are the 3 laws of reflection or refraction?
LAWS OF REFLECTION 1) Vampires don't have them 2) Ugly people shatter mirrors 3) If you write rude words on steamed-up mirrors, they reappear next time it gets steamy. LAWS OF REFRACTION: Law 1. The incident ray, the normal and the refracted ray all lie in the same plane. Law 2. The ratio sine of the angle of incidence (i) sine of the angle of refraction (r) is constant for light of a given colour (frequency) crossing the boundary of two given media. This ratio is called the refractive index (n). n = sin i sin r The refractive index of a transparent substance is measured when light enters the substance from a vacuum, but for all practical purposes we can take it as light entering the substance from air. The greater the value of the refractive index, the greater the bending of the light. Refraction is caused by the fact that light travels at different speeds in different media and it can also be shown that the refractive index is equal to the ratio of the speeds in the two media. Refractive index of glass = speed of light in air/speed of light in glass
How did the laws of light refraction work prior to Noah?
That's correct it had not rained on the earth before the Great Flood. Genesis 2:5-6 ...For the LORD God had not caused it to rain on the earth, and there was no man to till the ground; 6 but a mist went up from the earth and watered the whole face of the ground. I believe there was a canopy of ice crystals that surrounded the earth in the atmosphere at this time, reducing the amount of sunlight so that it appeared much like twilight all the time. Without rain and a bright sun no rainbow is possible no refraction occurs. Also the canopy caused a green house affect keeping the whole Earth in a tropical climate state. The whole earth at this time was like a huge jungle with lots of lush vegetation that was feed by the springs of water and the mist. This environment was perfect for the dragons or dinosaurs that lived at this time. It also accounts for the fossil fuel deposits across the world. Many huge beasts and jungles were covered up by the settling sediment of the flood. The springs that busted through the earths crust caused large portions of earth to shift known as tectonic plates these also covered and added pressure to the organic debris to form the fossil fuel deposits. The canopy also restricted the UV rays from reaching the earths surface and thus not allowing people to age as fast thus people lived much longer. During this flood this canopy melted helping to cause a quick and devastating event.
Some example of refraction of light are:Seeing a fish under water when we see a fish angularly under water then light gets refracted by water. As a result we see the fish but that is not exactly on that position where we see it.Camera in camera lens refracts light and projects an opposite image. The same thing also happens in our eyes.
How does refraction work?
The how of refraction is that light travels at different speed in different media, and always takes the minimum time of flight path. For example, if you consider a plate of glass with a beam of light hitting it at an angle, like so: \\\ Air -------------- ||| Glass The light will bend to travel at a sharper angle as it passes into the glass. Where exactly it lands ends up being the point that has minimum travel time. If you were to consider a plane inside the glass parallel to the surface of the glass and calculate, based on the speed in air and the speed in glass, the time it would take the light from the specified source to hit various points on this plane, you'd find the point it actually hits is the one that has the shortest time of flight. This idea for determining the "why" of refraction originated with the mathematician Fermat, who found that the "principle of least action" applied to many things in physics. This idea is very similar to the idea of geodesics in modern gravitational theories. There are various other ways to calculate this, such as classical methods using Huygen's principle which analyzes the main wavefront into many small wavelets, and considers the action at many points as the incident wavefront meets with material of a different propagation velocity. The net action of the changes on each wavelet creates a change in direction for the entire wavefront. Also, you can use Feynman's method of considering light taking all possible routes, with the observed route being the phase interference sum of all of these possible routes. The phase interacts to cancel out all things we *don't* see happen, but, from a quantum mechanical point of view, these non-happening paths are still is a sense real, just very improbable. So, in that case, the change in path is a result of a Huygen's like phase velocity change, and a phase summation over all possibilities which reinforces the "classical" behaviour.
How did Newton's corpuscular theory explain reflection and refraction?
You may try this web page: http://www.newtonproject.sussex.ac.uk/te... To my knowledge, and the information on that page, Newton never gave a good explanation, but refers to the "refractibility" of different rays (of different colors). It is easy to come up with a model based on a corpuscular theory. If you assume that the material consitutes a "potential well" (i.e. the particle will have higher potential energy there), which is easily interpreted in terms of forces at the surface. For the case of a well, the particle will feel an atractive impulse at the surface, which bends it towards the normal - just as light does. For a potential "bump" as opposed to a well, the particle feels a repulsive impulse, bending its trajectory away from the normal. The problem with this theory, however, is that in the case of a well the speed of the particle is predicted to increase in this theory, while in the wave theory of light it slows down. While Newon could not have been able to measure that directly, nowadays we can. Probably a more central question is if the corpuscular theory can account for the phenomena of interference and diffraction. I am sure, not.
Thanks for asking. I like the originality of the question.The physics behind a Newton’s cradle could be called a compression with direction. In other words, the force is transfered in one direction.This is different from a sine wave.In this case, gravity acts as the restoring force for the device. So the ball or balls fall back into the craddle, repeating the cycle. No gravity, no cycle,Also, this is not a sine wave. There is a slight delay for the compression to pass from ball to ball. We don’t notice it. If the craddle was made of 51 balls, for example, it would show a noticeable delay.When the compression finds a ball where the amount of energy is sufficient to move it, the compression becomes kinetic energy. This is why if we drop two balls then two balls on the other end move. Many people wander why not instead only the last ball gets twice the momentum.How Newton’s Cradles Work
The refractive index of different glass have different values, Fused Silica (Fused Quartz) - 1.458, Normal Glass - 1.50, Acrylic Glass - 1.490–1.492, Crown glass - 1.50–1.54, Flint Glass - 1.60–1.62 etc. But irrespective of that Violet light always bends more as it has shorter wavelength. The refractive index for red light in glass is slightly different than for violet light. That is why Violet light slows down even more than red light. The refractive index of red light in normal glass is 1.513 whereas the refractive index of violet light is 1.532. But, the exact refractive index of violet light depends upon the type of glass you are using.Hope this helps. Thanks for A2A.
The deviation of light from its original course due to it changing the optical material it was travelling through is called refraction. A deeper understanding of this requires the proper understanding of Huygen’s Principle.For now we will see that the light incident on a prism will follow Snell’s Law, [math]{sin(i)\over{sin(r)}} = {{\mu_2}\over{\mu_1}}[/math] where i is angle of the incident ray and r is the angle of the emergent ray.