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What (who) is low gear - definition
INTERCONNECTED SERIES OF TWO OR MORE GEARS IN A MACHINE
Gear ratio; Gear drive train; Geartrain; Gear ratios; Reduction gear; Reduction gearing; Final drive ratio; Velocity ratio; Double reduction gearing; Gear trains; Speed ratio; Low gear; Gear-ratio; Orbitless drive; Gear Ratio
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low gear
¦ noun a gear that causes a wheeled vehicle to move slowly.
gear train
¦ noun a system of gears which transmits motion from one shaft to another.
Velocity Ratio
A term applied to the ratios existing between the electrostatic and
electro-magnetic units. If we take as numerators the dimensions of the
different qualities in the electrostatic system, and their dimensions in
the electro-magnetic system as denominators, the fractions thus obtained
reduce to expressions containing only velocity or V in some form. Thus
if we divide the dimensions of the electrostatic quantity by the
dimensions of electro-magnetic quantity the quotient is simply V or
velocity. A like division for potential, electrostatic and
electro-magnetic gives (1/V), and so on.
The value of the velocity ratio is very nearly 3E10 (sometimes given as
2.98E10) centimeters per second. This is almost exactly that of light
(2.9992E10 centimeters per second.) This is one of the proofs of Clerk
Maxwell's magnetic theory of light. (See Maxwell's Theory of Light.)
[Transcriber's note: The SI metre was defined in 1983 such that the
speed of light in a vacuum is exactly 299,792,458 metres per second or
about 186,282.397 miles per second.]
Wikipedia
Gear train
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A gear train is a machine element of a mechanical system formed by mounting gears on a frame so the teeth of the gears engage.
Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next. Features of gears and gear trains include:
- The gear ratio of the pitch circles of mating gears defines the speed ratio and the mechanical advantage of the gear set.
- A planetary gear train provides high gear reduction in a compact package.
- It is possible to design gear teeth for gears that are non-circular, yet still transmit torque smoothly.
- The speed ratios of chain and belt drives are computed in the same way as gear ratios. See bicycle gearing.
The transmission of rotation between contacting toothed wheels can be traced back to the Antikythera mechanism of Greece and the south-pointing chariot of China. Illustrations by the Renaissance scientist Georgius Agricola show gear trains with cylindrical teeth. The implementation of the involute tooth yielded a standard gear design that provides a constant speed ratio.
Examples of use of low gear
1. But even in low gear, watching Zidane was like watching a great minimalist at work.
2. But being an experienced politician, who governed the U.K. for a decade and won three consecutive elections, Blair knows that he must start in low gear.
3. It was stuck in low gear." Barriers still exist, including not enough filling stations and a projected shortfall of ethanol production that will contribute to higher gas prices this summer, many experts say.
4. By Doug StruckWashington Post Foreign ServiceTuesday, February 27, 2007; A10 ON THE ICE ROAD, Northwest Territories –– Elden Pashovitz eased his big truck and 28 tons of aviation fuel onto the ice of Tibbitt Lake and set out in low gear for his destination, dozens of ponds and lakes away.
5. His travel books include Slowly Down the Ganges,‘‘ Round Ireland in Low Gear,‘‘ Love And War In The Apennines‘‘ – about his wartime experience – and On The Shores Of The Mediterranean.‘‘ –– Nelson de la Rosa NEW YORK (AP) – Nelson de la Rosa, a 2–foot–4 actor and ubiquitous good–luck charm for the Boston Red Sox during their victorious 2004 World Series run, died at a hospital Sunday, his agent said.