U+2699 Gear
U+2699 was added in Unicode version 4.1 in 2005. It belongs to the block
This character is a Other Symbol and is commonly used, that is, in no specific script. Znak jest również znany jako technology i tools.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+2699 forms with similar adjacent characters prevents a line break inside it.
The CLDR project calls this character “koło zębate” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: kółko, skrzynia biegów, zębate, zębatka.
This character is designated as an emoji. It will be rendered as monochrome character on conforming platforms. To enable colorful emoji display, you can combine it with
Wikipedia ma następujące informacje na temat tej współrzędnej kodowej:
A gear or gearwheel is a rotating machine part typically used to transmit rotational motion and/or torque by means of a series of teeth that engage with compatible teeth of another gear or other part. The teeth can be integral saliences or cavities machined on the part, or separate pegs inserted into it. In the latter case, the gear is usually called a cogwheel. A cog may be one of those pegs or the whole gear. Two or more meshing gears are called a gear train.
The smaller member of a pair of meshing gears is often called pinion. Most commonly, gears and gear trains can be used to trade torque for rotational speed between two axles or other rotating parts and/or to change the axis of rotation and/or to invert the sense of rotation. A gear may also be used to transmit linear force and/or linear motion to a rack, a straight bar with a row of compatible teeth.
Gears are among the most common mechanical parts. They come in a great variety of shapes and materials, and are used for many different functions and applications. Diameters may range from a few μm in micromachines, to a few mm in watches and toys to over 10 metres in some mining equipment. Other types of parts that are somewhat similar in shape and function to gears include the sprocket, which is meant to engage with a link chain instead of another gear, and the timing pulley, meant to engage a timing belt. Most gears are round and have equal teeth, designed to operate as smoothly as possible; but there are several applications for non-circular gears, and the Geneva drive has an extremely uneven operation, by design.
Gears can be seen are instances of the basic lever "machine". When a small gear drives a larger one, the mechanical advantage of this ideal lever causes the torque T to increase but the rotational speed ω to decrease. The opposite effect is obtained when a large gear drives a small one. The changes are proportional to the gear ratio r, the ratio of the tooth counts. namely, T2/T1 = r = N2/N1, and ω2/ω1 = 1/r = N1/N2. Depending on the geometry of the pair, the sense of rotation may also be inverted (from clockwise to anti-clockwise , or vice-versa).
Most vehicles have a transmission or "gearbox" containing a set of gears that can be meshed in multiple configurations. The gearbox lets the operator vary the torque that is applied to the wheels without changing the engine's speed. Gearboxes are used also in many other machines, such as lathes and conveyor belts. In all those cases, terms like "first gear", "high gear", and "reverse gear" refer to the overall torque ratios of different meshing configurations, rather than to specific physical gears. These terms may be applied even when the vehicle does not actually contain gears, as in a continuously variable transmission.
Reprezentacje
System | Reprezentacje |
---|---|
Nº | 9881 |
UTF-8 | E2 9A 99 |
UTF-16 | 26 99 |
UTF-32 | 00 00 26 99 |
Adres URL cytowany | %E2%9A%99 |
HTML hex reference | ⚙ |
Błędne windows-1252 Mojibake | âš™ |
alias | technology |
alias | tools |
Kodowanie: GB18030 (hex bajtów) | 81 37 B1 35 |
Gdzie indziej
Kompletny opis
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