Laser Trajectory Through Gelatin Outline

Topics: Light, Electromagnetic radiation, Refractive index Pages: 2 (292 words) Published: October 16, 2011
Background research:

~Terms, Concepts and Questions to Start Background Research
-Law of Refraction (A.K.A Snell’s Law)
-Trajectory
-Index of Refraction
-Incident Object
>Questions
-What exactly is a laser?
-What is the speed of light? What are some methods scientists have used to calculate it?
-What are some applications of Snell’s Law?
~Bibliography
-All about lasers:
>>Light Amplification by Stimulated Emission of Radiation (LASER or laser)
>>Mechanism for emitting electromagnetic radiation
>>Typically light or visible light
>>Emits via the process of Stimulated Emission
>>Usually a spatially coherent, narrow low-divergence beam, that can be manipulated win lenses.
-Law of Trajectory (A.K.A Snell’s Law)
>>What Snell’s Law is(Wolfram Research):
 >>What Snell’s Law is(Kaiser, Peter K.):
This form of Snell's law was actually published by Descartes as the law of Sines. Snell did discover the relationship but articulated it in a different way. Today it is the form used by Descartes that is called Snell's law. The law is defined as:

n1 sinQ1 = n2 sinQ2
Where n is the refractive index and Q the corresponding angles as shown. The refractive index is the ratio of the speed of light in a vacuum to the speed of light in a given medium. So, if the top part of the diagram is air, n1 is the speed of light in air and if the bottom part is glass, n2 is the speed of light in glass, both relative to the speed of light in a vacuum. Snell and Descartes realized that when light went from one medium to another, the angles & refractive indexes of the media determined the path that light took. The relationship is a function of the sine of the angles.
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