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unit 9: imaging
unit 9: imaging

... A radio telescope receives and detects EM waves in the radiofrequency region. What types of objects are known to radiate in this region? Properties of single-dish radio telescopes: 1) Since frequencies are small, their wavelengths are large, so the diameter of the radio telescope has to be large as ...
Document
Document

... fibre, it is continually reflected internally by the fibre. Compared with microwaves and radio waves optical fibres:  can carry far more information due to the higher frequency of light and infra-red.  are more secure because the signals stay within the fibres. ...
Dr. Shin - Northern Illinois University
Dr. Shin - Northern Illinois University

... In-Class Exercises and Attendance. You should come to class because there’s a lot that I’ll say that won’t be in the Power Point files, which will be on the tests. In the past, people who have skipped a lot of classes have received very bad grades. Conversely, people who’ve come to most or all of th ...
Convex Lenses and Mirrors
Convex Lenses and Mirrors

Projecting Chromatic Aberrations
Projecting Chromatic Aberrations

... red-orange edge will be seen on the light pattern there. If the paper screen is placed somewhat beyond the second lens, a blue edge will be seen. These chromatic aberrations are also shown in the ray diagrams of Figure 1. Some overhead projectors 12 allow the arm holding the second lens to be folded ...
Light Vocabulary Quiz
Light Vocabulary Quiz

... transparent material that refract or bend light rays in a certain way. ...
Correcting chromatic aberrations using a diffraction grating in a
Correcting chromatic aberrations using a diffraction grating in a

... plane, where the light is recorded by a light-sensitive device. This lightsensitive device is usually a photographic film or an electrical sensor called a charged couple device (CCD). The lens is made from one or more pieces of a transparent material, often glass but sometimes plastic or an encased ...
Lenses form images by refracting light.
Lenses form images by refracting light.

... right side up by a mirror and projected onto a screen for viewing. Finally, if an object is less than one focal length from a convex lens, it will appear right side up and larger. In order to enlarge an object so that you can see details, you hold a magnifying lens close to the object. In the photog ...
Light+and+Sound.+RM1
Light+and+Sound.+RM1

... surface of an object.  The normal is a line perpendicular to the surface at the point of reflection.  The angle of incident is the angle formed by the incident ray and the normal.  The angle of reflection is the angle formed by the reflection ray and the normal. ...
Lenses form images by refracting light.
Lenses form images by refracting light.

... right side up by a mirror and projected onto a screen for viewing. Finally, if an object is less than one focal length from a convex lens, it will appear right side up and larger. In order to enlarge an object so that you can see details, you hold a magnifying lens close to the object. In the photog ...
Properties of Light and Visual Function
Properties of Light and Visual Function

Light Propagation in optical Fibres
Light Propagation in optical Fibres

P3 Revision - the Redhill Academy
P3 Revision - the Redhill Academy

... 25cm (near point) and infinity (far point) ...
outline21379
outline21379

... Management Options for Keratoconus and Irregular Corneas Abstract: This course will introduce practitioners to the use of specialty contact lens designs, including large diameter and reverse geometry, as well as soft and hybrid lens designs to manage patients with keratoconus, pellucid marginal dege ...
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Lecture-7-Optics

... powers D1 and D2. ...
2.71/2.710 Optics
2.71/2.710 Optics

concave lens
concave lens

... In 1665, Italian scientist Francesco Maria Grimaldi observed that the edges of shadows are not perfectly sharp. He introduced a narrow beam of light into a dark room and held a rod in front of the light such that it cast a shadow on a white surface. The shadow cast by the rod on the white surface wa ...
Light Microscopy Excerpt from Chapter 1
Light Microscopy Excerpt from Chapter 1

... focused image). The distance of the object from the lens divided into the distance of the focused image from the lens determines the magnification. In the compound microscope there are usually two magnifying systems in tandem, one defined by the objective and the other defined by the eyepiece. Anoth ...
Presentation
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OFC - GEOCITIES.ws
OFC - GEOCITIES.ws

... Intramodal Dispersion: Light in a fibre consists of a group of wavelength. Light of different wavelength travels at different speeds in a medium. A narrow pulse tend to broaden as they travel down the fiber Waveguide Dispersion: It arises due to guiding property of fibre. The refractive index of any ...
the P3 `bus stop`
the P3 `bus stop`

... light or IR-radiation. Light enters the optical fibre at the critical angle and is totally internally reflected every time it hits the fibre boundary. ...
Activity: Emission spectroscopy and smart sensors
Activity: Emission spectroscopy and smart sensors

... (clay ). The USB link is used to bring power the spectrometer and transmit data to the computer. Light is brought to the spectrometer using the optical fiber. ...
5.3.2 Processing Light
5.3.2 Processing Light

... It is essentially still a slide projector but a bit more expensive (around (10 - 20) Mio € would be my guess). From a Materials Science and Engineering point of view, making those machines is a big challenge but nothing more shall be said about them here. It goes without saying, however, that for an ...
Essentials of the AV Industry Pretest Not sure if you need to take
Essentials of the AV Industry Pretest Not sure if you need to take

... 46. The process of adding video and/or audio signals to an existing signal on a predetermined carrier frequency is called ______ a. Modulation. b. Interpolation. c. Basebanding. d. Heterodyning. 47. As the bandwidth of a display system increases, the potential resolution of the images is _______ a. ...
Sample questions on optical fibre section of course
Sample questions on optical fibre section of course

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Harold Hopkins (physicist)

Harold Horace Hopkins FRS (1918–1994) was a renowned British physicist. His Wave Theory of Aberrations, (published by Oxford University Press 1950), is central to all modern optical design and provides the mathematical analysis which enables the use of computers to create the wealth of high quality lenses available today. In addition to his theoretical work, his many inventions are in daily use throughout the world. These include zoom lenses, coherent fibre-optics and more recently the rod-lens endoscopes which 'opened the door' to modern key-hole surgery. He was the recipient of many of the world's most prestigious awards and was twice nominated for a Nobel Prize. His citation on receiving the Rumford Medal from the Royal Society in 1984 stated: ""In recognition of his many contributions to the theory and design of optical instruments, especially of a wide variety of important new medical instruments which have made a major contribution to clinical diagnosis and surgery.""
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