Crochet differs from knitting in that only one stitch is active at one time ( exceptions being Tunisian crochet and Broomstick lace ), stitches made with the same diameter of yarn are comparably taller, and a single crochet hook is used instead of two knitting needles.

The height of knitted and crocheted stitches is also different: a single crochet stitch is twice the height of a knit stitch in the same yarn size and comparable diameter tools, and a double crochet stitch is about four times the height of a knit stitch.

A basic, conventional three-piece kit consists of bass drum, 14 " diameter snare drum, 12 "- 14 " hi-hats, and a single 12 " diameter hanging tom 8 "- 9 " in depth and a suspended cymbal in the range 14 "- 18 ", both mounted on the bass drum.

The beam of a single transverse mode ( gaussian beam ) laser eventually diverges at an angle which varies inversely with the beam diameter, as required by diffraction theory.

The main line has a single 9 ft diameter tube with two tracks.

The largest optical telescope in the world as of 2009 to use a non-segmented single-mirror as its primary mirror is the 8. 2 m ( 8. 7 yards ) Subaru telescope of the National Astronomical Observatory of Japan, located in Mauna Kea Observatory on Hawaii since 1997 ; however, this is not the largest diameter single mirror in a telescope, the U. S ./ German / Italian Large Binocular Telescope has two 8. 4 m ( 9. 2 yards ) mirrors ( which can be used together for interferometric mode ).

Its sensitivity will be equivalent to a single large dish more than 100 meters in diameter.

* September 18 – Great Comet of 1882: Her Majesty's Astronomer at the Cape, David Gill, reported watching the comet rise a few minutes before the Sun and described it as " The nucleus was then undoubtedly single, and certainly rather under than over 4 ″ in diameter ; in fact, as I have described it, it resembled very much a star of the 1st magnitude seen by daylight.

The capillaries are a single cell in diameter to aid fast and easy diffusion of gases, sugars and other nutrients to surrounding tissues.

For very large wind tunnels several meters in diameter, a single large fan is not practical, and so instead an array of multiple fans are used in parallel to provide sufficient airflow.

Unlike trees, individual bamboo stems, or culms, emerge from the ground at their full diameter and grow to their full height in a single growing season of three to four months.

They consist of a single tube of material with an inner diameter that's equal in size to the shafts.

A typical single mode optical fiber has a core diameter between 8 and 10. 5 µm and a cladding diameter of 125 µm.

This creates a combined telescope that is equivalent in resolution ( though not in sensitivity ) to a single antenna whose diameter is equal to the spacing of the antennas furthest apart in the array.

The size of tracheids is limited as they comprise a single cell ; this limits their length, which in turn limits their maximum useful diameter to 80 μm.

The diameter of a single carbon fiber is approx.

This single clonal colony plant of Larrea tridentata reaches up to in diameter, with an average diameter of.

The internal diameter of 8 μm forces the red blood cells to partially fold into bullet-like shapes and to go into single file in order for them to pass through.

A modern sports bike will typically have twin front discs of large diameter, but only a very much smaller single rear disc.

For example, a single 0. 66mm diameter line ( about the thinnest used ) can have a breaking strength of 56 kg.

The pansy flower is two to three inches in diameter and has two slightly overlapping upper petals, two side petals, and a single bottom petal with a slight beard emanating from the flower's center.

Multiple subwoofers can manage a flatter general response since they can often be arranged to excite room modes more evenly than a single subwoofer, allowing equalization to be more effective.

Low frequencies are not easily localized in small rooms, hence many stereo and multichannel audio systems feature only one subwoofer channel and a single subwoofer can be placed off-center without affecting the perceived sound stage, since the sound produced is difficult to localize.

However, unless the sound tracks have been carefully mixed for a single subwoofer channel, it's possible to have some cancellation of low frequencies if bass information in one channel is out of phase with another.

Instead, using only a single 20 amp electrical circuit for safety, visitors were allowed to step inside the horn of the subwoofer for an " acoustic massage " as the fractionally powered Matterhorn reproduced low level 10 – 15 Hz waves.

Competitive vehicles can range from a small vehicle with a single amplifier and subwoofer up to a large van with dozens of amplifiers and subwoofers powered by dozens of car batteries and with upgraded electrical wiring and alternators.

The SLSS comprised a total of 10 speakers ; 3 x 10 cm tweeters in the front console ( left, right and centre ), 2 x 10 cm door-mounted cones ( left and right ), 2 x tweeters and 2 x cones contained in a single, tube shaped unit mounted on the rear parcel shelf, and a boot fitted ' Acoustic Resonance Woofer ' ( subwoofer ).

He holds many of the formula's driver records, including most championships, race victories, fastest laps, pole positions, points scored and most races won in a single season – 13 in 2004.

In this approach the target is first compressed " normally " using a driver laser system, and then when the implosion reaches maximum density ( at the stagnation point or " bang time "), a second ultra-short pulse ultra-high power petawatt ( PW ) laser delivers a single pulse focused on one side of the core, dramatically heating it and hopefully starting fusion ignition.

Cyclotrons have a single electrical driver, which saves both money and power.

End-fire drivers can be positioned within a single enclosure that houses more than one driver.

He became interested in audio equipment design and his last project was a unique, one-way speaker using a single driver.

* Staff ( railway signalling ), a token authorizing a locomotive driver to use a particular stretch of single track

;< tt > uid </ tt > and < tt > gid </ tt >: These two options tell the filesystem driver to set the ( default, in the case of umsdos ) owner ID and group ID to be a single, specified, value for all files in the volume.

This was the first 0-2-2 and first single driver locomotive.

The other band members went their own ways during the period of inactivity following Loveless: Butcher contributed vocals to Collapsed Lung's 1996 single " Board Game ", Googe had been sighted working as a cab driver in London and formed the supergroup Snowpony in 1996, O ' Ciosoig joined Hope Sandoval & the Warm Inventions, while Shields collaborated with Yo La Tengo, Primal Scream, and Dinosaur Jr.

To leave the loop, the driver contacts control to enter the next single section.

Less-important public figures, or those with lower risk profiles, may be accompanied by a single bodyguard who doubles as a driver.

The classic farm tractor is a simple open vehicle, with two very large driving wheels on an axle below and slightly behind a single seat ( the seat and steering wheel consequently are in the center ), and the engine in front of the driver, with two steerable wheels below the engine compartment.

Hoskins left school at the age of 15 with a single O-Level and worked as a porter, lorry driver and window cleaner.

Most television sets and small radios have only a single midrange driver, or two for stereo sound.

In the 19th century a coupé was a closed four-wheel horse-drawn carriage, cut ( coupé ) to eliminate the forward-mounted, rear-facing passenger seats, with a single seat inside for two persons behind the driver, who sat on a box outside.

With often varying conditions at each starting point ( typically comprising dry tarmac, wet tarmac, snow, and ice, sometimes all in a single stage of the rally ), this placed a big emphasis on tyre choices, as a driver has to balance the need for grip on ice and snow with the need for grip on dry tarmac.

* Taxicab, a type of vehicle for hire with a driver, used by a single passenger or small group of passengers, often for a non-shared ride

It was available in three-door hatchback for the single driver, and saloon models which suited families, and estate.

Warren could afford only a single limousine, however, and so the driver had to drop off one group, then drive around the block and pick up another.

* In 1954, in a recording studio equipped with an Ampex reel-to-reel audio tape recording machine, an unknown truck driver named Elvis Presley recorded his historic first single, " That's All Right " at Sun Studios in Memphis.

After returning to Australia again he formed his own Touring Car team, combining the resources of V8 Ford driver Bob Morris and rotary Mazda racer Barry Jones into a single two-car team but results were mixed and the exercise dissipated by the end of the season.

For the film's promotion, a trailer was released featuring a split screen in the style of Andy Warhol's Chelsea Girls, depicting on one side of the screen a single point-of-view-shot of a driver on a country road, and the other side various scenes from the end of the film featuring Chloë Sevigny.

* February 21 – 14 hours and 2 minutes after taking off from New York, Air France pilot Patrick Fourticq and his companion, race driver Henry Pescarolo, land their Piper Malibu in Paris, setting a world record for a trans-Atlantic flight by a single engined light aircraft.

Two young single men named Spitzer and Reinhardt traveled with another German couple, the Wolfingers, who also had a hired driver, " Dutch Charley " Burger.