Refraction

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    entirely optical (light-based) technology. To send information using fiber optics, (eg: a computer) lasers within the computer will convert electrical information from the computer into a series of light pulses, this is the fundamental properties and function of a fiber optic cable. Fiber optic cables can be made of entirely out of glass, also known as ‘glass plus polymers’ or just ‘polymers’. (plastic optical fibers) Glass is primarily used for long distance applications due to its low absorption. The cables consists of 100 or more incredibly thin strands of these glass or plastic fibers, which coincidentally is called ‘fiber optics’ The most basic fiber optic will be made of: • An inner cylinder shaped object that consists of a high refraction medium, commonly known as the ‘Core’. Here in the core is where light begins to travel and refract when sending data across. • A middle cylinder that surrounds the inner part of the cable (Cladding). This is one of the layers of materials that have a lower refractive index. By being in contact with the core which has a higher refractive index, the cladding causes light to be confined to the core of the fiber by total internal reflection. This is what will prevent any sort of leaks or loss of transmission data. • The outer protective layer, it is known as the jacket, buffer coating or polyurethane (PVC). The function of fiber optic cables can be explained through the physics of it. When light is transmitted through the Core of the…

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    absorbing all the light that tries to pass through it. Conversely, there are some materials that allow light to travel through them. These substances include things like air, water, or glass. When the substance light is travelling through changes so does the speed at which it travels. This change in speed causes light to bend and change direction when entering a new substance–a process referred to as refraction. Every one of these refractive materials has a property that has been called an…

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    Dispersion Of Light Essay

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    The refractive index for the longer wavelengths (red) is lower than for the shorter wavelength (violet). This leads to a large angle of refraction for the longer wavelengths than shorter wavelengths. When light emerges from the other side of the prism, we see the various wavelengths dispersed to show different colors of the spectrum. Fig.No.2.10 - Dispersion of Light 2.5. Behaviour of Light: Just there for…

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    The Schlieren photographs taken in this lab, attached in Appendix B, show how the flow develops with respect to the flow exit pressure that is controlled by the opening of the valve. Schlieren photography is made possible by the variation of refraction index of gases in different density. To be more specific, the Schlieren photographs are taken in an environment with a collimated light. Without external interference, a collimated light should propagate in parallel for an infinite distance;…

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    A ray of light travels in a straight line. This is true until it passes from one medium (eg. air) into another medium (eg. glass) of a different optical density. When this happens, the ray of light changes speed causing it to bend either towards or away from the normal which is an imaginary line at 90 to the interface between two mediums. This is called refraction. How much it bends depends on the refractive indices of the two mediums which is a ratio of the speed of light in one medium…

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    Refraction In Physics

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    What is refraction Refraction is the bending of light when it passes from one medium to another, as light travels through one medium such as air it will travel at a certain velocity but once it enters another medium such as glass it will change direction due to the increase in density of the medium which slows down the velocity of the light. The amount that the light bends as it travels through a medium depends on how drastic the difference in optical density is. For example if light were to…

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    Refraction Lab Report

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    The speed of light is the ultimate speed limit in the universe. Which travels at 3.0 x 108 m/s in a vacuum and always moves in a straight line. When light travels to a new medium its speed and direction will change, this is called refraction. Materials have different optical density so light rays travel at different velocities. Refractive index is the ratio of the speed of light in a vacuum to the speed of light in a medium. Calculated by the velocity of light in vacuum divided by velocity in a…

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    An inverted fluorescence microscope is an inverted compound light microscope equipped with modules to internally separate the different wavelengths of light, and direct them to respective detection channels. Its main components include a light source, an objective, a filter cube and a detection unit, which can be an eyepiece or a camera (Fig.1). Filter cube is a component which separates a fluorescence microscope from a light microscope. It consists of one excitation filter, one emission filter…

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    A wave is a disturbance of energy. Sound and light are both disturbances in energy, and they both travel in the forms of waves. While sound travels in a longitudinal wave, light travels through a transverse wave. From a perspective of a human, sound and light on earth is very different compared to sound and light in space. These waves have differences in speed, form, shape, and other properties. Despite many of the differences, sound and light are very similar to each other. Light is a…

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    What is the photon detection efficiency (PDE) of a SiPM? Photon detection efficiency (PDE) refers to the probability that a photon arriving on the SiPM surface is detected, an initiates the process of current pulse generation. PDE is a function of the overvoltage ΔV across the terminals of the APD and wavelength λ of the incident photon. Photon detection efficiency is one of the most important characteristics of a SiPM. PDE is the product of three factors :- Geometrical fill factor (FF), Quantum…

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