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IJ (digraph)
IJ (lowercase ij; ; also encountered as deprecated codepoints IJ and ij) is a Digraph (orthography), digraph of the letters ''i'' and ''j''. Occurring in the Dutch language, it is sometimes considered a Ligature (writing), ligature, or a letter in itself. In most fonts that have a separate character for ''ij'', the two composing parts are not connected but are separate glyphs, which are sometimes slightly Kerning, kerned. An ''ij'' in written Dutch usually represents the diphthong . In standard Dutch and most Dutch dialects, there are two possible spellings for the diphthong : ''ij'' and ''ei''. That causes confusion for school children, who need to learn which words to write with ''ei'' and which with ''ij''. To distinguish between the two, the ''ij'' is referred to as the ("long ''ij''"), the ''ei'' as ("short ''ei''") or simply ''E – I''. In certain Dutch dialects (notably West Flemish and Zeelandic) and the Dutch Low Saxon dialects of Low German, a difference in the pronu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joule
The joule ( , ; symbol: J) is the unit of energy in the International System of Units (SI). It is equal to the amount of work done when a force of 1 newton displaces a mass through a distance of 1 metre in the direction of the force applied. It is also the energy dissipated as heat when an electric current of one ampere passes through a resistance of one ohm for one second. It is named after the English physicist James Prescott Joule (1818–1889). Definition In terms of SI base units and in terms of SI derived units with special names, the joule is defined as One joule can also be defined by any of the following: * The work required to move an electric charge of one coulomb through an electrical potential difference of one volt, or one coulomb-volt (C⋅V). This relationship can be used to define the volt. * The work required to produce one watt of power for one second, or one watt-second (W⋅s) (compare kilowatt-hour, which is 3.6 megajoules). This relationship can b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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