Free Total internal reflection Essays and Papers

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    the sun emits most of its radiation in the visible range which our eyes recognize as the color of rainbow. b. Law of reflection The law of reflection states that when a ray of light strikes a plane mirror, the light ray is reflected off the mirror as such that the angle of reflection is equal to incidence angle. The diagram below illustrates the law. Figure 2: angle of reflection=angle of incidence In the diagram, the light approaching the mirror is the incident ray and the light leaving the mirror

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    Bradford Museum of Film and Photography Our physics group went on a trip to the Bradford Museum of Film and Photography to find out more about physics. We went to find out about new ideas of physics and also to reinforce ideas we had already covered in class. The areas of physics we were going to focus on was the use of light and lenses and the way they are used in everyday products. At the museum we visited an area called The Magic Factory, which was all to do with the ideas and applications

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    technologies and some theories. The prototype tends to simulate syneasthesia in a way that, stimulating different senses such as, tactile, aural and visual real time simultaneously. In order to create inputs and outputs, FTIR (frustrated total internal reflection) surface with pressure sensor used as a tactile and touch interface, Cymatic Phonemona of Hans Jenny for visuals, also different sound effects created in Max MSP which are simulating the feeling of textures used on the FTIR surface. 2

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    (m) or if the wave is travelling through a vacuum: c=fλ where c = speed of light (ms-1) f = frequency (Hertz) λ = wavelength (m) Law of Reflection: When a ray of light is bounced or reflected off of a plane surface, there is a specific law that can be used to predict the angle at which it is reflected off of the surface. This is known as the ‘Law of Reflection’ and it states: “… the incident ray, the reflected ray, and th... ... middle of paper ... ...development. Within the various applications

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    Physics of Fiber Optics

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    History Of all the pioneers of this industry, none stand out as the primary leader of discovery or development. This competitive environment was an integral part of this field's progress. Not all discoveries were harbored as proprietary. There was a great deal of information that flowed amongst the leading scientists developing this technology. Here are some of the key players and some of their contributions: Claude Chappe, French Engineer invented the Optical Telegraph, which used a series

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    Law Of Reflection

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    LAW OF REFLECTION When a light ray strikes a plane mirror it changes its direction which is known as “reflection”. The light ray, which strikes the mirror, is known as “incident ray” and the ray after reflection is known as “reflected ray”. The perpendicular line which bisects the incident ray and reflected ray is called normal drawn to the point of intersection. The incident ray, reflected and the normal drawn to the point of intersection lie on the same plane. (Fig 1) When the light reflects

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    Engineering

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    Total Internal Reflection: The light passes through the fibre by the process of total internal reflection. In this process the light is contained within the glass core and cladding by careful designing of their refractive indices. So the light passes through the fibre by reflecting the escaping light at the glass core because of its lower refractive index and this reflection makes it possible to pass the light with low loss. This phenomenon is termed as Total internal reflection. [33] How it is made:

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    Light Revision Notes

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    wavelength: a lot of spreading, no sharp shadow e.g. sound through a doorway 2. a gap much larger than the wavelength: little spread, sharp shadow e.g. light through a doorway Reflection ---------- When waves reflect, they always do it regularly. Remember: i = r (The angle of incidence = the angle of reflection) Rough surfaces Each bit of the surface obeys this law, but the overall effect of the jagged surface is to scatter the light diffusely. The reflected waves head off

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    Surface plasmon resonance sensor is a promising optical sensor. In 1902, Wood discovered that there are loss of small area in the spectrum after the light beam passed through a grating[4]. This discovery has been intensified by many researchers. Until 1971, Kretschmann used a prism as a substrate and covered its bottom with thick metal film to achieve SPR detection [5]. Thereafter, SPR technology achieved great development. According to Liu and his colleagues in 2013, this prism based SPR sensor

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    Waveguides Research

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    propagation through living tissue. Simple waveguides may be made by cladding a material with a high index of refraction with a material having a low index of refraction, providing total internal reflection when rays are incident upon the boundary at angles to the interface sufficiently shallow to experience total internal reflection. However, a situation of greater generality is one in which the index of refraction is continuously varying. One example is when the square of the index of refraction varies

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    Fiber Optics

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    a once (but no longer) labour-intensive process. Fibre Optic Bundles If light enters the end of a solid glass rod so that the light transmitted into the rod strikes the side of the rod at an angle O, exceeding the critical angle, then total internal reflection occurs. The light continues to be internally reflected back and forth in its passage along the rod, and it emerges from the other end with very little loss of intensity. This is the principle in fibre optics of which long glass fibres of

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    Properties of Light

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    1. INTRODUCTION With the due course of properties of light, an optimum amount of the energy of the guided light is in form of evanescent waves which are very sensitive to changes occurring in the external environment, forms multilayer structural photonic band gap by propagating electromagnetic waves of certain wavelengths. The electromagnetic (EM) waves with frequencies falling within Photonic Band Gaps (PBGs) [1, 2] cannot propagate through the structure. The localized states can be created in the

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    Fibre Optics

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    precedents and invented the modern optical fibre. How it works These fascinating fibres function in a very unique way. First a transmitter produces and encodes light signals into the optical fibre which transmits the information via total internal reflection; a phenomenon which means that light is completely reflected (minimal leakage). In order for this to be achieved, there must be two factors. Firstly, the condition is that the first medium must have a higher refractive index (ratio between

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    Refraction of Light

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    Refraction of Light Aim: To find a relationship between the angles of incidence and the angles of refraction by obtaining a set of readings for the angles of incidence and refraction as a light ray passes from air into perspex. Introduction: Refraction is the bending of a wave when it enters a medium where it's speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media

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    Snell's Law

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    Snell's Law Snell's Law: sin i v1 ======== sin r v2 v1 is a constant known as the refractive index (m), using this we can rearrange the v2 equation to form: sin i = msin r This means that sin i is directly proportional to sin r and if we measure both of these we will be able to calculate the refractive index. [IMAGE] It can then be seen that once the ray enters the prism, it does not continue in a straight line, rather it is abruptly deviated and then travels

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    Atmospheric Optics

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    Atmospheric Optics Light is all around us, from both natural and artificial sources, during the day and the night. We think we understand it, and that what we see by it is an exact representation of what we are looking at. However we can be mistaken; the setting sun seen on the horizon has in fact already dropped below the horizon. Twinkling stars are also an effect of this same process, called refraction. Light passing through a medium such as air or water can be absorbed and scattered by the

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    Refraction Refraction is what happens to light when it passes from one medium to another. For example, things appear differently from the bottom of a swimming pool than on the top. Simplistically, refraction is the bending of light. The explanation for this phenomenon, however, can be described with light as rays and light as waves. No matter the case, it is important to remember that the speed of light is constant in every homogeneous medium, regardless of shape, size or form. The index of

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    if the rays enter and leave a prism at right angles (Assuming the rays only travels through one medium while passing through the prism), the only effect on the image will be the reflection of the rays off of its surfaces. Since the law of reflection I= -I’ (Angle of incidence equals the negative of the angle of reflection) is not effected by the medium, the effect of the prism will be same as that of reflective surfaces or mirrors placed in the same location as the reflective surfaces of the prism

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    Investigating Refraction

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    Investigating Refraction Aim: Find the critical angle and refractive index for plastic using a graphical treatment for my results. Introduction: The Refractive Index is how the much a material bends the light. In this experiment I will be looking at the how much the angle of incidence gets refracted and I will multiply my results by sine. I will plot a graph from my results and, using a line of best fit, I will calculate the size of the angle of incidence in order for the refracted angle

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    Finding out the Speed of Light Through Perspex Aim To find out the speed of light through Perspex by passing a narrow ray of light through a D-Block of Perspex, by using the same concepts and ideas as Snell's Law. Background Light is an electromagnetic wave. The speed of light depends on the medium through which it propagates: it goes fastest in a vacuum, almost as fast in air but considerably slower in glass. Because of the special role it plays in many parts of physics, the speed

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