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| '''[[C (letter)|C, c]]''' is a letter of the Latin alphabet. It is the third letter of most variants, being placed after B and before D, as is the case for instance in the English alphabet. Its English name is pronounced [ˈsiː], like ''see'' and ''sea'', and is occasionally spelt out as ''cee''.
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| C is also the Roman numeral representing the number 100.
| | ==Footnotes== |
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| ===Use in English===
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| Though very common in English, '''c''' has (as in French, Portuguese, Catalan and many varieties of Spanish) no sound of its own. It is either in the back of the throat, exactly like '''k''' ('''kíng''') and '''q''' ('''quêen''') or it is a hiss, like the most common sound of '''s''' ('''sô''', '''híss'''). (The accents show stress and pronunciation: see English spellings.)
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| '''c''' is actually more common than '''k''' - and much more than '''q''' - for the throaty sound. It occurs before back vowels '''a''', '''o''' and '''u''': '''cát, còme, còunt, cûre, côast''', and liquid consonants '''l''' and '''r''': '''clíck, crúst, clàss'''. In '''crícket, thícket, rácket, wícker, bícker, lócker, dócker, crácker, brácken, bráckish, lácking''', the '''k''' is needed to show the throaty sound of the second '''c''': without the '''k''', the '''c''' would sound like an 's' because of the following '''e''' or '''i'''. Also, -'''ck''' is more common at the end of words as in '''déck''' and '''clóck'''. But after '''í''', '''c''' is quite common finally: '''plástic, pánic, eléctric, frenétic, mûsic'''. Compare '''síc''' ''thus'' with '''síck''' ''ill''. Also: '''mâniác, lîlac, ålmanác, blóc'''. By contrast, words do not end -ec or -uc.
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| The hissing '''s''' sound occurs before front vowel letters '''i, e''' and '''y''': '''cïrcle, céntre, cŷcle, cínema, nîce, Lâcy, Trâcy, pâcy'''. For the hissing sound to remain before a back vowel, a cedilla is used in '''Bàrça''' (cf. '''Barcelôna''', where no cedilla is needed), '''curaçào, soûpçon, façàde''' and '''Provençàl''' (*Próvón-sàl).
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| The famous rule "'''i''' before '''e''' except after '''c'''" applies only to the '''ê''' sound (and not to '''èi''' as in '''vèin'''): '''cêiling, decêit, recêive, recêipt''' (-êet). And then, not only after '''c''', as it happens: '''sêize, wêir, wêird, Nêil, Kêith''' and '''Shêila'''. Compare '''vèil, vèin, fèint''' ''pretend'' (= '''fâint''' ''swoon''), '''dèign''' ''condescend'' (= '''Dâne''' ''Denmark''), '''rèign''' ''queen'' (= '''râin''' ''wet''), and also '''théir''' ''they'' (= '''thére''' ''here'').
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| Quite often, especially at the beginning of a word, '''sc''' is used for the hissing sound before front vowels: '''scêne, scéptic, scîence, scént, scíssors, scîon, scintílla, scímitar, scŷthe, sciática''' (*sŷáttica).
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| In the suffix -'''ésce''': '''acquiésce, effervésce''', and pronounced '''z''' in '''créscent''' (*crézzənt).
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| An exceptional '''c''' is found in '''encephalîtis''', pronounced '''k''' before '''e''' (enkéf-); otherwise '''c''' is always a hiss before '''e''', '''i''' and '''y'''.
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| There are silent '''c'''s in '''indî'''c'''t, Tû'''c'''son''' and '''Conné'''c'''ticut'''.
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| '''ch''' most typically sounds like '''t''' plus '''sh''' – not usually like '''sh''' alone. French, German and Portuguese do not have this sound, although the Germans write it in foreign words as ‘tsch’. Spanish does have it, whence '''mácho''' (*mátcho: it is sometimes mispronounced ‘macko’, as if Italian). '''ch''' is common in English, which has taken French words like '''chàrm''' ('charme' in French) and modified the sound of the French '''ch''', which has the English '''sh''' sound: '''chéck, choôse, chânge, Ríchard''' and also '''côach, bêach, chêek, chéss, chêer, cheŵ, escheŵ''' (which has a rare, separately sounded, '''s''' before it). Inside a word, there is often a superfluous '''t''' before '''ch''': '''ítch, dítch, cátch, mátch, bùtcher''' - but never after '''r''': '''tŏrch, lürch, àrch''', except in names: '''Pàrtch''' ''person'' = '''pàrch''' ''tongue''. And '''Tchaîkovsky''' has the '''T''' initially.
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| Uniquely, this sound is spelt '''Cz''', however, in '''Czéch''' ''Republic'' (= '''chéck''' ''determine'' = BrE '''chéque''' ''cash'').
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| In some words more recently taken from French, '''ch''' sounds exactly like '''sh''' in '''shê''': '''machìne, nìche, pastìche, '''BrE''' moustàche, '''AmE''' moústáche, párachute, créche, Chicàgo''' and '''nónchalant''', in which AmE French-style silences the '''t''': *nonshalàn.
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| In other words, mostly from Greek, '''ch''' is pronounced '''k''': '''chord, chémist, psŷchê, dichótomy, schême, àrchive, synécdochê, schoôner'''.
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| In various Celtic words '''ch''' can sound like the Arabic '''kh''', e.g. '''lóch, Dócherty''' - but many non-Celts simply make the '''k''' sound here. And in the variant spelling '''Dóherty''', the '''h''' sounds like itself alone - or like '''kh''' or '''k'''.
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| ''[[C (letter)|.... (read more)]]''
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After decades of failure to slow the rising global consumption of coal, oil and gas,[1] many countries have proceeded as of 2024 to reconsider nuclear power in order to lower the demand for fossil fuels.[2] Wind and solar power alone, without large-scale storage for these intermittent sources, are unlikely to meet the world's needs for reliable energy.[3][4][5] See Figures 1 and 2 on the magnitude of the world energy challenge.
Nuclear power plants that use nuclear reactors to create electricity could provide the abundant, zero-carbon, dispatchable[6] energy needed for a low-carbon future, but not by simply building more of what we already have. New innovative designs for nuclear reactors are needed to avoid the problems of the past.
(CC) Image: Geoff Russell Fig.1 Electricity consumption may soon double, mostly from coal-fired power plants in the developing world.
[7] Issues Confronting the Nuclear Industry
New reactor designers have sought to address issues that have prevented the acceptance of nuclear power, including safety, waste management, weapons proliferation, and cost. This article will summarize the questions that have been raised and the criteria that have been established for evaluating these designs. Answers to these questions will be provided by the designers of these reactors in the articles on their designs. Further debate will be provided in the Discussion and the Debate Guide pages of those articles.
- ↑ Global Energy Growth by Our World In Data
- ↑ Public figures who have reconsidered their stance on nuclear power are listed on the External Links tab of this article.
- ↑ Pumped storage is currently the most economical way to store electricity, but it requires a large reservoir on a nearby hill or in an abandoned mine. Li-ion battery systems at $500 per KWh are not practical for utility-scale storage. See Energy Storage for a summary of other alternatives.
- ↑ Utilities that include wind and solar power in their grid must have non-intermittent generating capacity (typically fossil fuels) to handle maximum demand for several days. They can save on fuel, but the cost of the plant is the same with or without intermittent sources.
- ↑ Mark Jacobson believes that long-distance transmission lines can provide an alternative to costly storage. See the bibliography for more on this proposal and the critique by Christopher Clack.
- ↑ "Load following" is the term used by utilities, and is important when there is a lot of wind and solar on the grid. Some reactors are not able to do this.
- ↑ Fig.1.3 in Devanney "Why Nuclear Power has been a Flop"
