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Optics

~600 answered questions
Parent Category: Physics
Optics covers the properties of light and its interactions with materials including refraction and polarization. In particular it covers the behavior of optical lenses.

Subcategories

Less expensive - Several miles of optical cable can be made cheaper than equivalent lengths of copper wire. This saves your provider (cable TV, Internet) and you money. Thinner - Optical fibers can be drawn to smaller diameters than copper wire. Higher carrying capacity - Because optical fibers are …
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The Lens is the image-forming device on a camera. The lens bends light rays to project an image onto a light sensitive medium, which may be any of several forms, including film, sensitized glass plate, or electronic sensor. The Diaphragm is a variable opening which controls the quantity (brightnes…
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No one invented light. Light has existed since the beginning of time. It is a natural physical phenomenon, a manifestation of a portion of the electromagnetic spectrumTomas Edison invented the first light bulb.Thomas Edison invented the lightbulb
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late 1970s. 562626263+6
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There are many theories for who invented the first pair of eyeglasses. There is evidence of eyeglasses in China from 1270, and the Chinese claim that they imported spectacle technology from the Middle east in the 11th century, but there are also some theories that they were first invented in Italy b…
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Answer One fiber optic strand is made of glass. It is quite small and the light actually passes through an area within the core of the strand. Data is pushed through (zeros and ones) and data can be 'piggy backed' with other data. Think of a prism and all the data is the colors in the prism. The …
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The angle of incidence is the angle at which a ray of light (which is not at right angles to a surface) strikes a surface. The angle of refraction is the angle at which a ray of light, having passed through a surface, travels through the body of a substance. Normally the angle of incidence and the…
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The first working laser was demonstrated on May 16, 1960 by US scientist Theodore Maiman at Hughes Research Laboratories. Since then, lasers have become a multi-billion dollar industry. By far the largest single application of lasers is in optical storage devices such as compact disc and DVD player…
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At the beginning of time.1547
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In A HouseThe first optical laser was demonstrated on May 16, 1960 by Theodore Maiman at Hughes Research Labs.
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Because the chloroplasts are red.
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There is a phenomenon in optics called "total internal reflection". Suppose a light ray is in some medium like glass and is about to exit into the air. If the ray is incident on the glass/air surface at a large enough angle then it gets totally reflected back into the glass. This phenomenon is used …
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Wearing reflective clothes is very helpful whilst cycling as it is bright and this will cause less accidents to take place. It also helps drivers to see cycle's at night so there would be fewer accidents and injuries. Part of the surface of the garment may have retro reflective stripes. This way t…
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Polarization is the aligning of vibrations in a transverse wave, usually by filtering out waves of other directions. Polarized light waves only travel vertically or horizontally -- when combined at right angles they block each other out and no net light can be detected.
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It is the bending of light
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An aperature OS size a illluminated by a parallel beam sends diffracted light into a angle of approximately ~y/a. This is the angular size of the bright central maximum. In trevelling a distance z, the diffracted beam therefore acquires a width zy/a due to diffraction. this gives distance beyond wh…
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putting a pencil in a glass of water, shining a light into a prism and the third i don't know because nobody told me yet sorry i just know them to from school and a text book
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Some properties are: • Light travels in straight lines • Light can be reflected • Light can be bent • Light is a form of Energy Light does travel in straight lines at the level of classical physics. In true Universal strictness all motion is curved. Light not only can be reflected, but …
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Because wet hair repels light and weighs down your hair... Once the water evaporates the colour of your hair gets lighter because it reflects light. When its wet light takes a longer time to penetrate through your hair, thus leading in a darker colour... Until it drys.Your Welcome, x
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I think it has something to do with the water molocules mixing with your hair cells. Also, you know how the sky reflects on the water making it appear blue, yet the water always looks a bit darker? I think that also has something to do with it. Sorry if this didn't help much! Optically, it is becaus…
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It means that the image cannot be seen on the screen.
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africa and new zealand. some parts of florida beaches.
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Hi,up to 20000 euro for a collector (see one brougth at microscopy.uk)but piece perfectly stored and with genuine spare.
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Use Snell's Law. Snell's Law is:Sin i divided by Sin r, where "i" is the angle of incidence and 'r" is the angle of refraction.
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give examples for photonic devices?
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Light that bounces off of something, mostly mirrors. It looks like a ball bouncing off the ground.
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They also learn to compensate for refraction. When they plunge into the water, the eyes are protected by a membrane. So they actually catch their prey blind, relying on touch to decide when to snap their bills shut. They then fly straight out of the water with their prey in their bills. This was fr…
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Formerly, endoscope optics consisted of a series of thin converging "relay lenses", creating a succession of images in the air spaces between them. Following the innovation by Harold H Hopkins, the thin lenses in air were replaced by thin air lenses in glass. In other words, each lens consisted of a…
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Not much, except mabey clearer glass and better reflecters. Reflectors? That doesn't make sense to me, as light in optical fibers is transmitted by refraction not reflection.
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Well, Newton itself proposed that photons went changing betwen two states, one for reflection and another one for refraction. ¿But what would it mean exactly?Perhaps in the reflection state the photon would "feel" a repulsive interaction about matter, while in the refraction state it would be attra…
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The sources of light are 1. Natural source of light 2. Artificial source of light Light (a form of electromagnetic radiation) is produced when an electron moves from a high energy state to a lower energy state. Light is produced by the release of energy, either nuclear, chemical, mechanical, or e…
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Robert Whitman and his companyRobert Whitman and his company
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Translucent means light passes through the medium, but the light is diffused so that object beyond cannot be seen clearly. Transparent means that light passes through the medium and is not diffused and objects beyound can be seen clearly.
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Snell's law is the first law of optics, and also known as the law of refraction. It is a formula used to describe the relation between an angle of incidence and refraction, when referring to light.
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Gun shop, gun show, want ad, for sale ad, pawn shop.
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Refraction of light allows for the change of appearance of an object
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Is this Jeopardy? OK I'll bite = "What is...a mirage?"
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MirrorsBecause if they didn't, they wouldn't be mirrors; they'd be windows -- or walls! Perhaps you wish to know how they reflect or why some surfaces reflect whereas others don't.There are basically three types of surfaces: those that absorb light, those that reflect it, and those that neither refl…
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Several people contributed to the making of fiber optics, including Alexander Graham Bell. The first person to actually make it work, however, was a medical student named Heinrich Lamm in 1930.
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Fiber optics are cables that are used to transmit data at the speed of light. This uis especially popular with Verizon FiOS services. for details on fios go to www.whyisfiosbetter.viviti.com
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Fiber Optics are unable to be tapped like radio frequencies. It is capable of high speeds and full duplex. Light is modulated and sent through them.
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The refraction of light is the change in direction of a light ray when it crosses a boundary between two transparent substances. Refraction of light is the change in direction of a light ray due to a change in its speed as it goes from one medium to another. The speed and wavelength of a light ray c…
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Unpolarized light has electromagnetic waves vibrating in all directions perpendicular to the direction of propagation. A polarizing filter only transmits light that is polarized along the same axis as the filter's axis. (Note that a polarizing filter also partially allows some orientations through t…
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Without refraction of light eyes cannot see and eye sight problems could not be rectified. Camera cannot function. Pojector fails to magnify the image and projects it on the screen. Optical fibre could not have been made into reality.
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1: Fastest cable in sending and receiving data and information. 2: Small in size. 3: Water proof 4: Travel long distance (miles) 5: Last longer that other cables. by:kishon (Grenada)
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Used mostly in endoscopes to see inside a patients body. A light is usually passed down to illuminate the cavity. They can also be used to make phone calls or print images of the surgery.
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During refraction, light follows particle nature. When a pair of light particles, attracted to each other, travel from a rarer medium to a denser medium obliquely, the particle that reaches the denser medium first, slows down. As a result, the light ray bends towards the first particle, which is nea…
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wavelength in vacuum/ wavelength in material = n 650nm/450nm= 1.44=n
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Red. Policemen will pull over red cars at a far greater rate than others. So maybe they at least look faster, or the color red makes them angry like bulls. Torro!violet (blue)
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because the snow reflects the sunlight, thus sunburning the skiers Snow reflects sunlight so it gives sunburns. The rays are normally absorbed by the ground bouncing off the snow and hit you indirectly.
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Depends on the system. Can be very high.
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possibly chantelle schuz?
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Albert Einstein in 1917
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Technically it was first demonstrated by Daniel Colladon and Jacques Babinet in Paris during the 1840's.
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Instead of using electricity to transmit data, fiber optics use infrared light.Professor Charles K. Kao invented a purer type of glass tubing called fiber optic wire, which was able to carry light for more than a kilometer. Using pulses of light, fiber optic wire can transmit large amounts of data v…
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Optical Fibres are tiny cylindrical strands of glass that carry light rather than electrical energy. Fiber-optic cable is increasingly used for long-distance phone lines because it can carry large amounts of data, is not subject to crosstalk or electromagnetic noise, and cannot be tapped into withou…
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It can range very widely. They can go from 5 mega bits per second to 50 giga bits per second. (with different types of cabling.) In Sept 2009, in their lab, Alcatel-Lucent achieved a speed of 2 Peta bits per second over 7,000KM. That's over 100 million Giga bits per second.
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If light goes from flint glass into ethanol and the angle of refraction in the ethanol is 27.6, the angle of incidence in the glass is approximately 23.21. This calculation is based on refractive index of pure flint glass being 1.60 and refractive index of ethanol being 1.361.
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basically, the cable uses something called the critical angle, to keep light inside it. This means the cable can be bent while still allowing light to travel through it.
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Chandrasekhra Venkata Raman. He was also the first Asian to be awarded the Nobel Prize.
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An angle of refraction is the angle between the perpendicular and a ray refracted at a surface.
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Willebrord Snell
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It really depends on the type of glass. "Glass" is a more or less generic name for different substances that look transparent for us. The normal glass is mainly transparent for visible light; it will absorb both most ultraviolet light, and most infrared light.
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fu** ur self..... what is the angle of min devi for a violet color
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reflection is when light its something like a mirror and refraction is light going through something solid that is not like a mirror when light falls on a surface and bounces back, it is reflection and when light is absorbed by the surface or passes through the surface but does not bounces back, it …
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That depends on the specific type of glass. Typically it is somewhere close to 2/3 the speed of light in a vacuum, i.e., the speed of light in glass should be approximately 200,000 km/second. To get more accurate values, look up the "index of refraction" for a specific type of glass Dividing the spe…
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A spectroscope
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willebrord snell
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No, not really. white is the complete absence of color (red green blue) and black is the combination of all colors. While in art you are taught thar red yellow and blue are the primary colors, in physics you are taught that they are really red green and blue. The combination of these colors create m…
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It would be great if questions like this one could be made easier to understand by the persons who ask them. What is the question really asking? Is it asking for some help with an investigatory project about optics? Or if there is an investigatory project about optics somewhere? Or is it loo…
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VAG!!!!
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Arthur L. Schawlow and Charles H. Townes
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rainbow phenomenon,occurrence of eclips
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The type of microscope that you are looking for is known as a "compound microscope." A pair of lenses includes the objective lens (one or more) and the eyepiece lens.
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Refraction is the bending (changing direction) of light (or other wave) as it passes from one medium to another. Waves also change speed when refraction occurs. Most of the examples of refraction that people encounter in daily life involve light and either glass or water, but all waves exhibit refr…
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A) bent in two directions
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Fibre optic cables are single strands of glass fibre, the glass carefully chosen to have a very small loss of intensity. The diameter of the fibre is still greater than the wavelength of light so the signal could bounce around inside the fibre in a rather uncontrolled way, so fibres are constructed …
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Optics is the branch of science that deals with the behaviour of light. Any thing which comes under the purview of this is termed optical. for eample optical lens, optical microscope .........etc
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it is applicate for Telecom and Datacom Storage Network CATV $ Multimedia Application Systems Integration for Long Haul, Metro and Access Network Fiber to the Indoor (FTTX) Test Local Area Network(LAN)
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It is used by cable going up the anal and lighting up the inside.
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Some people use concave mirror because when a man stands between the principal focus and pole of a concave mirror,he sees an enlarged,erect and virtual image of his face.this is the reason why a concave mirror of large focal length is used for shaving. concave mirrors concentrate on one focus and w…
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Change in direction, and either an increase or decrease in speed of the light wave
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In a simple microscope, a lens magnifies the image of the sample. in a compound microscope, the objective lens magnifies the image (there may be more than one objective lens) and the eyepiece lens enlarges the virtual image (which is typically inverted by the objective lens).
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This an AFM (Atomic Force Microscope).
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Fiber optics are lines of pure glass, thin as human hair. They are used to transmit light, similar to a long twisting corridor, with mirrors at each angle to continue reflecting the light along the entire length. The light is the data, such as cable tv, or telephone signals.
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Because it absorbs all visible light. Visible white light can be divided into 7 colours (the rainbow). Every object appears as the colour they are because they reflect that colour from the rainbow spectrum or a mixture of them and then absorb the rest of the light rays. Black things do not reflect a…
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Evolution. Pit Viper snakes depend on infrared vision to hunt.
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Multi-mode: 2km single-mode: 20,40,60,80,100km etc. and here is a professional manufacturer in China named Sailing.
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Surely not fiber optics cant be used to send electricity through them it can transmit only optical signals that is light signals... and it can be used for long distance communication under sea transmission and so on...
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hey guys this is pooja.....the answer is that it is used to detect the optical activity of a plane polarised light...!! my question: is polarisation of light by dichroism there in 2009 isc syllabus of physics.?? pls let me know...ok? thanks....do reply if u r reading my question....thanks...!! urs p…
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Violet. In dispersion of white light, red comes first as it has the smallest angle of refraction, then Orange, Yellow, Green, Blue, Indigo and finally Violet, with the largest angle of refraction.
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Fiber optics was invented for the same reason that human optics were invented, the fiber was having trouble seeing clearly.
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