heartbeats of patients . The listener can hear normal and abnormal respiratory‚ cardiac‚ pleural‚ arterial‚ venous‚ uterine‚ fetal‚ and intestinal sounds. Telescope To see far objects such as stars and planets. Besides that‚ it consists of two convex lenses ( eyepiece lens) Binoculars Provide stereoscopic vision of distant objects for seeing tiny object . A pair of identical telescope mounted side by beside in the same direction allowing the viewer to use both eyes when viewing distant objects.
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because the image of the object has fallen onto the blind spot in your eye. •This blind spot does not have any photoreceptors. As result‚ the image of the cross that falls on this spot cannot be detected‚ and that’s why you can’t see it. B. Optical illusion •Optical illusion are caused by disturbances to the nerve impulses going to the brain. •The disturbances may caused by the object or condition around the object. •The brain cannot accurately interpret the information sent by the receptors in eye.
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glasses and likewise lenses that deals with overexposure to sun. This variety of lenses indicates the amount of protection it can give to the eyes. It includes the tints in the lenses that keep UV ray from reaching the eyes. Manufacturers add certain colors that block UVB light. Amber and brown tints are especially useful at absorbing UV light; however‚ any light-blocking tint will help prevent eye damage. Manufacturers either use colored glass or polycarbonates to make these lenses or soak polycarbonate
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Si/Ge optical lense IR DETECTOR IMAGE PROCESSI -NG Display CRT/ LCD As given in above block diagram‚ general IR cameras use Si/Ge optical lense to capture images‚ which are further sent to IR detector. Image processing is important and needed after an IR image is captured. This is done through kit such as FPGA( feed programmable gate array) board or any other such board. As we know body emits different type of radiations‚ one of which is IR‚ so this Si/Ge optical lense along
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through a specimen by a condenser lens‚ then is passed through two more lenses placed at both ends of a light-tight tube. The latter two lenses each magnify the image. Limitations to what can be seen in bright field microscopy are not so much related to magnification as they are to resolution‚ illumination‚ and contrast. Resolution can be improved using oil immersion lenses. Other than the compound microscope‚ a simpler instrument for low magnification use may also be found in the laboratory. This
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microscopes – the two most common being the optical microscope‚ also known as a light microscope‚ and the electron microscope‚ which can be either a transmission electron microscope (TEM) or a scanning electron microscope (SEM). There are more differences than similarities between light microscopes and electron microscopes. Firstly‚ optical microscopes and electron microscopes both work in different ways. As the light source or condenser of an optical microscope focuses light on a tiny bright spot
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Seven Organizational Approaches There are seven organizational approaches to study the human body which are body planes and body directions‚ body cavities‚ quadrants and regions‚ anatomy and physiology‚ microscopic to macroscopic‚ body systems and medical specialties. Each approach can provide a specific point of view and provides unique information by dividing or organizing the body in a logical way (Turley‚ 2011). There are three main body planes: the coronal or frontal plane‚ the sagittal
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1930s: All about Aviation As new airplanes allowed people to fly higher and farther‚ many US Air Force pilots were reporting that the glare from the sun was giving them headaches and altitude sickness. A new kind of glasses was introduced with green lenses that could cut out the glare without obscuring vision‚ and the Ray-Ban brand was born. This new anti-glare eyewear went on sale to the public in 1937. The original glasses featured a plastic frame with the now classic Aviator shape. The sunglasses
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for the safety and efficacy of the medicinal product following administration. There are several methods that can be used to investigate the size and shape of particles. These range from basic (generally older) techniques such as sieving and use of optical microscopes through to more advanced techniques‚ such as using a coulter counter‚ a scanning electron microscope or photon cross correlation spectroscopy. You will cover a range of techniques in the lectures that accompany this section of the module
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| 北京航空航天大学 | BEIHANG UNIVERSITY | Introduction to Electronic Information Engineering Digital Electronics Technology Used in Aircraft Carrier Landing Major : Mechanical Engineering and Automation | Name : Salman Saleem 萨尔曼 | Roll No. : 30th December ‚ 2012 Introduction An Aircraft Carrier is a floating warship designed to deploy and recover aircraft‚ acting as a seagoing floating airbase. Aircraft carriers allow a naval force to project airpower worldwide without having
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