Glass fibre - Glass fibre Glass fibres are made of silicon oxide with addition of small amounts of other oxides. They are strong, corrosion resistant and inexpensive. There are two main types of glass fibres: E-glass and S-glass. E-glass is more commonly used, while S-glass is stronger. Glass fibres, in the form of woven mats or spray application, are much used as reinforcing materials in conbinations with other materials, see GRP. Due to their ability to conduct light, single strand glass fibres are also used as optical fibres for telecommunications. They are produced by a spinning process, in which they are pulled out through a nozzle from molten glass at a rate of thousands of meters per minute.. See also: Fiberglass Synthetic fibers.
Glass - Glass Glass is a material (see below) and a drinking vessel made of this material. See also glasses. Glass is a transparent, relatively strong, hard-wearing, essentially inert, and biologically inactive material which can be formed with very smooth and impervious surfaces. These desirable properties lead to the very many uses of glass. Glasses are uniform amorphous solid materials, usually produced when a suitably viscous molten material cools very rapidly, thereby not giving enough time for a regular crystal lattice to form. Common glass is mostly amorphous silicon dioxide (SiO2), which is the same chemical compound as quartz, or in its polycrystalline form, sand. Pure silica has a melting point of about 2000 Celsius, so two other substances are always added to the sand in the glass-making.
Joseph Swan - of the light bulb. In 1850 the British pioneer began working with carbonized paper filaments in an evacuated glass bulb. By 1860 he was able to demonstrate a working device but lack of a good vacuum and an adequate supply of electricity resulted in a short lifetime for the bulb and inefficient light. By the mid-1870s better pumps became available, and Swan returned to his experiments. Swan received a British patent for his device in 1878. Swan reported success to the Newcastle Chemical Society and at a lecture in Newcastle in February 1879 he demonstrated a working lamp that utilized a carbon fibre filament. The most significant feature of Swan's lamp was that there was little residual oxygen in the vacuum tube to ignite the filament, thus allowing the filament was.
Dispersion (optics) - is true, and the group velocity can be thought of as the signal velocity of the waveform. In some unusual circumstances, where the wavelength of the light is close to an absorption resonance of the medium, it is possible for the group velocity to exceed the speed of light (vg > c), leading to the conclusion that superluminal (faster than light) communication is possible. In practice, in such situations the distortion and absorption of the wave is such that the value of the group velocity essentially becomes meaningless, and does not represent the true signal velocity of the wave, which stays less than c. The group velocity itself is usually a function of the wave's frequency. This results in group velocity dispersion (GVD), which causes a short pulse of light to.
Bugatti Automobili SpA - V12 3500cc engine of 611bhp @ 8250 rpm, powering all four wheels through a six-speed forward gear box, and was capable of 212 mph (341 km/h). In 1992, a lighter and more powerful model, the EB110 SS (either Sport Stradale or SuperSport) was introduced. This one was capable of 352 km/h and 0-100 km/h in 3.2 seconds. Constructed on a double wishbone chassis, the body, built by aircraft company, Aerospatiale, was made from carbon fibre. Equipped with Stanzani's famous lifting scissor doors, it had a glass engine cover that provided a view of the massive V12 engine along with a speed-sensitive electronic rear wing that could be raised at the flick of a switch. Five aluminum chassis pre-production prototypes were built, followed by eight with composite chassis. Following these, it is.
Coronation Street - who had to walk more slowly than normal to appear in scale with the set. In 1968 Granada decided that the indoor set was just too limiting and unrealistic, and decided to build an outdoor set. This was built on some old railway sidings near the Granada Studios, and co-incided with a storyline of the demolishion of Ellison's Raincoat Factory and the Mission Hall and the subsequent building of maisonettes opposite the terrace. The outdoor set was initially little more than a facade. In the early 1970's roofs and back yards were added, but the set was still quite cramped. In 1982 a modern full size exterior street was built in the Granada backlot; because it was meant to be permanent the houses were constructed from bricks and mortar rather than.
Composite material - made from two or more components. One component is often a strong fibre such as fiberglass, kevlar or carbon fibre that gives the material its tensile strength, while another component is often a resin such as epoxy that binds the fibres together and renders the material stiff and rigid. Examples of composite materials: glass-reinforced plastic or GRP metal matrix composites Chobham armour (see composite armour) plywood.
Tom-tom drum - to a clamp or holder to much more sophisticated arrangements where there is no attachment to the shell, instead a frame clamps to the tuning lugs. Another sort of rod clamp system allows attachment of the drum to the tom holder without the need of a hole in the drum shell for the rod to pass through. The clamp is attached to the shell at the nodal point with two bolts so as to allow the shell to vibrate freely without degrading the shell's dynamic range and sustain. The nodal point is the location on a shell with the least amount of vibration allowing for the mount to have minimal affect on the resonance of the shell. Shells A crucial factor in achieving superior tone quality and ensuring durability, especially with.
Saab EV-1 - on the Saab 900 Turbo 16. The design was made by Björn Envall and included such features as a solar powered fan with sun cells mounted in the glass roof. The front and rear was made of Aramid reinforced glass fibre. Most of the parts were from the Saab 900 Turbo 16 and modified, but the seats came from a Chevrolet Corvette. The engine was tuned to give 285 hp. The top speed was 270 km/h and 0-100 was done in 5.9 seconds. An interesting feature is that the speedometer lights only iluminate the area around the current speed..
Signal reflection - transmitted along a transmission medium, such as a copper cable or an optical fibre, there is the possibility that some of the signal power is reflected back to its origin, rather than being carried all the way along the cable to the far end. This happens because of imperfections in the cable causing impedance miss matching and non linear changes in the cable characteristics. These abrupt changes in characteristics cause some of the transmitted signal to be reflected. In Radio Frequency (RF) practice, this is often measured in a dimensionless ratio known as VSWR with a VSWR bridge. Although the principles are the same, this concept is perhaps easiest to understand when considering an optical fiber. Imperfections in the glass create mirrors that reflect the light back along the fiber. The.
Sterilisation (microbiology) - that record or display pertinent information such as temperature and pressure as a function of times. Indicator tape is often taped onto packages of products to be autoclaved. The tape contains a chemical that will change colour if the appropriate conditions have been met. Some types of packaging have built-in indicators on them. Biological indicators, (such as the Attests), can also be used. These contain Bacillus sterothermophilus spores, which are amongst the toughest organisms an autoclave will have to destroy. After a run in an autoclave, the internal glass in the Attest vial is shattered, allowing the spores into a differential liquid medium. If the autoclave destroyed the spores, the medium will remain a blue colour. If autoclaving was unsuccessful the B. sterothermophilus will metabolise, causing a yellow colour change after.
Refractive index - smaller than one. This does not contradict the theory of relativity, which holds that no information carrying signal can ever propagate faster than c, because the phase velocity is not the same as the group velocity or the signal velocity. The phase velocity is defined as the rate at which the crests of the waveform propagate; that is, the rate at which the phase of the waveform is moving. The group velocity is the rate that the envelope of the waveform is propagating; that is, the rate of variation of the amplitude of the waveform. It is the group velocity that (almost always) represents the rate that information (and energy) may be transmitted by the wave, for example the velocity at which a pulse of light travels down an optical fibre..
Reliant - manufacturer based in Tamworth, England which is notable for building Glass Fibre three wheeled cars, such as the Reliant Robin, Reliant Regal, Reliant Rialto and parts supplier for the 1970s Bond Bug Reliant also built a four wheeled version of the Reliant Robin called the Reliant Kitten ; the forerunner to this was the Reliant Rebel and during the 1980s a utility / pickup vehicle called the Reliant Fox. They also made a small 3 wheeled commercial vehicle called the Reliant TW9 , later sold by other companies as the Ant, which was basically a Chassis / Cab onto which a custom rear body was fitted and used by many public utility companies. Most of these quirky and distinctly British small cars used Europe's first mass-produced lightweight aluminium alloy engine, initially.
Reliant Kitten - The Reliant Kitten is a small Classic British Glass Fibre car manufactured by the Reliant Motor Company in Tamworth, England. 850cc Aluminium Engine, very ecconomical. This little car shares its Chassis, Engine and running gear (with minor modifications), with the Reliant Fox Utility / Pick-Up A 'Preservation Society' exists called the Reliant Kitten Register.
Reliant Fox - Fox is a small four wheeled Classic British, Glass Fibre utility vehicle manufactured by the Reliant Motor Company in Tamworth, England. 850cc Aluminium Engine, very ecconomical. The Reliant Fox was based on the Reliant Kitten with which it shares its Chassis, Engine and running gear (with minor modifications), intended for sale in Greece, but finally also built in the UK with some 400 Vehicles being built A 'Preservation Society' exists for 4 wheeled small Reliants called the Reliant Kitten Register.
Optical fiber - Optical fiber An optical fiber (or fibre in British English) is a transparent thin fiber for transmitting light. Fiber optics is the branch of science and engineering concerned with optical fibers. The optical fiber can be used as a medium for telecommunication and networking because it is flexible and can be bundled as cables. Although fibers can be made out of either plastic or glass, the fibers used in long-distance telecommunications applications are always glass, because of the lower optical absorption of glass. The light transmitted through the fiber is confined due to total internal reflection within the material. This is an important property that eliminates signal crosstalk between fibers within the cable and allows the routing of the cable with twists and turns. In telecommunications applications, the light used.
Nichols radiometer - and Hull in 1901 for the measurement of radiation pressure. It consisted of a pair of small silvered glass mirrors suspended in the manner of a torsion balance by a fine quartz fibre within an enclosure in which the air pressure could be regulated. The torsion head to which the fiber was attached could be turned from the outside by means of a magnet. A beam of light was directed first on one mirror and then on the other, and the opposite deflections observed with mirror and scale. By turning the mirror system around so as to receive the light on the unsilvered side, the influence of the air in the enclosure could be ascertained. This influence was found to be a minimum, and to have an almost negligible value, at.
Joanna Glass - Joanna Glass Joanna McClelland Glass is a Canadian playwright who currently resides in Naperville, Illinois. Works: If We Are Women - 1994 Yesteryear - 1998 Play Memory - 1999 See also: List of Canadian writers, List of Canadian playwrights.
Ira Glass - Ira Glass Ira Glass was born March 3, 1959 in Baltimore, Maryland, the son of radio announcer/accountant Barry Glass and psychologist/infidelity researcher Shirley Glass. He attended Brown University, where he majored in semiotics. Glass has worked in public radio for over 20 years. He started out as an intern at National Public Radio. He was a reporter and host on several NPR programs, including Morning Edition and All Things Considered. Since 1995 he is host and producer of the radio show, This American Life, from WBEZ. The show went national in June 1996 and is distributed by Public Radio International. It reaches over 1.4 million listeners weekly..
Is the glass half empty or half full - Is the glass half empty or half full Is the glass half empty or half full is a common expression, used rhetorically, indicating that a particular situation could be a cause for optimism (half full) or pessimism (half empty), and that it just depends on how you look at it. This article is a stub. Help Wikipedia by fixing it..
