Laser applications

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    Gordon Gould proposed laser action, then not long after 4 years, in 1960, first laser was build by Theodore Maiman. Besides that, Gordon also derived the word laser from “light amplification by the stimulated emission of radiation”. The laser developer look amplification is very important as a step to build a laser, so these people make one advance to develop amplifiers from semiconductor laser to be used as light sources. This is because of semiconductor have high gain. Laser made up with high gain

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    An Analysis of Vibration

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    An oscillating motion of a particle or body about a reference point which is fixed is known as vibration. This motion is sinusoidal i.e., simple harmonic or otherwise non sinusoidal i.e., complex. This can occur in different modes as translational or bending modes and, since the vibration can occur in more modes at a time, vibration analysis is very much difficult. Units of vibration The units of vibration depend on the vibrational parameter as follows: • Acceleration in units of m/s2. • Velocity

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    Emission Of Radiation

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    Light Amplification by Stimulated Emission of Radiation (LASER) produces a narrow beam light, which is used in a multitude to modern technology (NASA, 2017). A LASER is produced through the using energy to excite atoms trapped within a space surrounded by mirrors. The atoms will emit photons that will recoil off the mirrors, the more activity in this space the more photons will be released, as it will increase the excitement of other atoms. In one section of the codified are area a partial mirror

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    Holography Essay

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    because light sources available at the time were not coherent. In 1960 a breakthrough came forth. The invention of the laser had pure and intense light that was well suited for the making of holograms. Emmett Leith and Juris Upatnieks

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    [3-5]. Argon laser treatment for clinically significant macular edema (CSME) has been the mainstay treatment according to the Early Treatment Diabetic Retinopathy Study (ETDRS) study that demonstrated a 50% reduction in moderate visual loss following focal laser photocoagulation [6,7]. The conventional Argon laser treatment is associated with heat to the surrounding tissues such as the neurosensory retina and the choroid leading to collateral thermal damage. The greyish endpoint of a laser burn means

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    James T. Russell and the Invention of the Compact Disc James Russell was born in Bremerton, Washington in 1931. His first invention, at six years old, was a remote-control battleship with a storage chamber for his lunch. In 1953, he earned his Bachelor of Arts in physics and graduated from Reed College in Portland. Afterwards he went to work as a Physicist in General Electric's nearby labs in Richland, Washington. There he started many experimental instrumentation projects

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    Carbon dioxide laser ablation: The carbon dioxide (CO2) laser has been in use for decades as a tool in general and dermatological surgery. The CO2 laser creates an infrared light at a 10600 nm wavelength that produces a thermal effect on targeted tissue. The energy from the laser rapidly heats intracellular and extracellular water to 100 ºC, causing vaporization, thus disrupting cell membranes and causing cell death. The laser is used to vaporize a layer of epithelium, and this skin is cleared from

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    This article describes the interaction of a laser pulse train on napthalocyanine and phthalocyanine systems, in order to analyze their behavior in terms of optical limiting by tuning the laser parameters. The main conclusion of the work is that the single sub-pulse duration is the most important parameter that affects the optical limiting process. The topic of the manuscript, may be of interest to the audience of the Journal of Computational and Theoretical Chemistry. However, the computational methodology

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    game? A perfect pair of soccer shoe for his game. Shoes that give them full control over the ball with a perfect accuracy that help him to soccer a goal. In my opinion, Nike did an excellent job in making their advertisement about their new T90 III laser soccer shoe. The main theme of the Nike – T90 III shoes in the advertisement, “Nike – Hit the Target,” is no matter how good you play or how famous you are in the soccer world. You still need a pair of shoe that will help in gaining control over the

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    Radiation is energy emitted from a source. It has the property to ionise when it has such a high energy, that at the moment it interacts with an atom, it can remove tightly bound electrons from its orbit, causing the atom to become charged (ionized). The ionising effect of X-rays allows them to damage the DNA in cells and divide cells in the body. This property is used it the cancer treatment. When a person has cancer, their cells divide uncontrollably because of changes in their DNA, forming tumours:

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