Optical Mice School of Polytechnic Studies Department of Industrial & Engineering Technology COMPUTER PERIPHERALS A mouse is a device, or computer peripheral, lets a user control a cursor that allows data to be manipulated without having to use complicated keyboard commands. The mouse, though probably named mouse because of its appearance, was originally called an X0Y Position Indicator. Douglas Englebart, who worked for Stanford Research Institute, in 1963, invented the mouse, as we know
the needed lens power and pupil distance (PD). Lenses in the needed power are either ordered or taken from stock. These lenses come from the factory as uncut round blanks approximately four inches across. Edging is the process of cutting these optical lens blanks to fit frames, producing a pair of glasses. Equipment There are four pieces of equipment used in the lens edging process. A lensometer is used to check the power in the lens. The tracer is used to determine the dimensions and shape
Optical Storage Mediums The most common way of storing data in a computer is magnetic. We have hard drives and floppy disks (soon making way to the CD-ROM), both of which can store some amount of data. In a disk drive, a read/write head (usually a coil of wire) passes over a spinning disk, generating an electrical current, which defines a bit as either a 1 or a 0. There are limitations to this though, and that is that we can only make the head so small, and the tracks and sectors so close
Optical Communication Optical communication is defined as a communication in which light carries signal from one end to another. Optical communication depends on optical fibers to carry out the signals to the other end or to the destination. Optical communication has three building blocks transmitter, receiver and medium. Optical fibers are used as transmission medium. Advantages of Optical communication/Optical fiber: • Optical Fiber Cables can run long distance like 40KM, without repeating. For
One wonders what an optical illusion is, “an optical illusion is a visually perceived image that differs from reality.” (Eifrig, 2014, n.p.). There are so many different types of optical illusions in which play with the brains of people. Optical illusions are normal because the majority of humans experience them. Humans’ vision tries its best to figure out what is happening to the picture, which then creates an image contradicting reality. Sometimes illusions can be entertaining because it fools
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EXECUTIVE SUMMARY THE COMPANY Concept: Make and market red-tinted contact lenses for egg-laying chickens, altering their behavior so they will fight less, eat less, and produce more eggs -- increasing egg-ranch profitability Projections: Eventual pretax net margins of 25%; 1989 sales of $329,000; 1992 sales of $24 million Hurdles: Persuading historically conservative egg farmers, operating on thin margins, to risk money up front for an unproven product; sustaining the company in the face of slower-than-expected
[Need to modify: copied from thesis Robust and Fault Tolerant Control of CD-players] In 1972 Philips announced a technique to store data on an optical disc. First in 1981 Philips and Sony proposed the Compact Disc Digital Audio standard (CD-DA) which was coded in the so-called Red Book [Philips and Sony Corporation, 1991]. The development of this technique revolutionized the audio world by introducing truly digital technology for the first time. It was in the year 1982 that Philips and Sony launched
times. Communication plays an important role in human beings life. Optical fiber has modernized the way the world communicates. Optical fiber is a combination of light and glass, build in a strand of glass thinner than human hair. This astonishing medium allows us to broadcast data, voice and video at the speed of light. Researchers who were working for American Glass maker Corning Incorporated invented the first low - loss optical fiber with crucial attenuation limit of 20 db/km for use in telecommunications
Flash Drives and Optical Storage In Computing, optical disc drives are described by Wikipedia as a disk drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs. Some optical disc drives can only read from discs, but recent drives are able to both read and record, also called burners or writers. These drives are very commonly used in computers to read software and consumer media distributed
Optical Fiber Corporation SWOT ANALYSIS Environment Fiber optics is a new technology that uses rays of light instead of electricity to transmit information over optical fibers at very high speeds. The optical fibers are usually thin strands of glass that are combined into cables and used to send information and computer data in the form of pulses of light. The optical fibers provide much clearer transmission than conventional copper cable and satellite links. The world market for optical fiber
1) What is an optical illusion? For most of us, the term brings to mind images of a unique arrangement of vibrant contrasting colors, and geometric shapes that deceive the eye, and violates our expectations in a myriad of ways “about representation, about shape, about color, and so forth”(Sekel). Figure 1 is one common example of this definition. In this image the circles appear to be expanding when in fact the image is static. Another example of an optical illusion would be
What is OCR – The Basics of Optical Character Recognition With the growing demand for electronic documentation and paperless business solutions – there has been a significant growth in interest surrounding OCR technology. Unfortunately, despite its increase in popularity and numerous benefits to traditional scanning, many professionals are still left with the question - what is OCR? In today’s business atmosphere, it is becoming increasingly common for documents to be scanned, allowing for the convenient
enhance my competencies in this field. I intend to complete my master's degree in order to pursue my doctorate. The research that I am most interested in pursuing at Northeastern University surrounds the optical properties of MEMS devices, and the development of substrate-based fast electro-optical interfaces. My interest in this area stems from my undergraduate study in MEMs development for tri-axial accelerometers. Engineering has been a key interest of mine since childhood. While still in
There are several ways that data can be input into the computer one of which is called Optical Data Reader. The Optical Data Reader can be used to input the information off of printed questionnaires. There are two categories of optical data readers; the Optical Mark Recognition (OMR) and the Optical Character Recognition (OCR). Optical Mark Recognition is used when pencils are used to fill in boxes on Optical Mark Recognition paper or a mark sense forms such as is used in standardized tests like
called radio telescopes. Radio telescopes may be made much larger than optical/infrared telescopes because the wavelengths of radio waves are much longer than wavelengths of optical light. A rule of thumb is that the reflecting surface must not have irregularities larger than about 1/5 the wavelength of light that is being focused. By that criterion a radio telescope is several hundred thousand times easier to figure than an optical telescope of the same size In the movie "Contact," astronomer Ellie
different forms of piracy and can all affect the movie industry in various ways. The most common type is known as “Optical Disc Piracy,” which is a major threat to the movie industry. “Pirate optical discs, which include Laser Discs (LD), Video Compact Discs (VCD) and Digital Versatile Discs (DVD), are inexpensive to manufacture and easy to distribute. In 2000, over 20 million pirate optical discs were seized, and by comparison, 4.5 million videos were seized worldwide in the same period” (Anti-Piracy)
in harmony or loneliness. In psychological terms, illusions are consider to be a very natural process and necessary rather than being conginated as abnormal, which are sometimes known as passive illusions. This means that our mind plays with our optical visibility by projecting strange figures with a continuous persistence which are usually based on our habits, attitudes and unconscious motivations. These usual visionary spectrums are described in The Gale Encyclopedia of Psychology in an article
Optical Illusions Optical illusions are creations and figures of art that plays a trick on the eye. These illusions are created by appearing to be other than it really is. The illusions are created by formed by misinterpreted sensory signals. “They are characterized by visually perceived images that differ from objective reality. The information about the objects including shape, color, distance, and movement of objects” (Visual Illusions). The illusions are deceived by the eye. The first
DISCUSSION In this experiment, we had been able to learn the proper technique of using the optical microscope and preparation of different types of slides. Optical microscope, often referred to as light microscope, is a type of microscope which uses visible light and a system of lenses (4X, 10X, 40X and 100X) to magnify images of small samples. Image from an optical microscope can be captured by normal light-sensitive cameras to generate a micrograph. Microscope is one of the best technology provide