- 1克耳文(台灣譯法;中國大陸作「開爾文」)。實驗室裡常直接說 K 或「絕對溫度」。
Kelvin is a way of measuring how hot or cold something is, used mainly in science. On this scale, water freezes at 273.15 K and boils at 373.15 K. The steps are the same size as steps; the difference is where zero sits. Zero kelvin is absolute zero — as cold as matter can get, where particles have as little heat energy as physics allows. Room temperature is about 293 K. You do not use Kelvin to talk about the weather or a fever; that would sound odd. , chemists, and people who study space use it because it starts from a true bottom, not from the freezing point of water. In careful modern writing the unit is just kelvin, with the capital-letter symbol K, and we do not put a degree mark in front of it — though actually many people still say 'degrees Kelvin' from old habit.
組成The temperature unit is named after the Irish-born Scottish physicist William Thomson, who became Lord Kelvin. His title comes from the River Kelvin in Scotland. The river name is probably from Scottish Gaelic, perhaps caol ('narrow') or coille ('wooded') plus abhainn ('river'). The surname may also have been pulled toward Calvert, an older English name; that is only a possible extra influence, not the main story.
原始詞典資料8 筆記錄
以下是外部詞典記錄的用法,摘錄並精簡格式,我們還沒有寫成教學內容。上面的說明才是我們自己寫的;有些用法可能上面已經講過了。
Kelvinname/ˈkɛlvɪn/
- 1
A river which flows through East Dunbartonshire council area and Glasgow council area, Scotland, to the River Clyde.
- 2
A locality in the Griffith council area, central New South Wales, Australia.
- 3
A surname from Scottish Gaelic.
- 4
A male given name transferred from the surname, of rather rare usage.
kelvinnoun/ˈkɛlvɪn/
- 1
In the International System of Units, the base unit of thermodynamic temperature; ¹⁄_(273.16) of the thermodynamic temperature of the triple point of water.
- Ice melts above 273.15 kelvins.
- Water boils above 373.15 kelvins.
- 2
One degree of difference on this scale, as a unit interval.
- The dew point here today is only 1 kelvin above what it was yesterday.
- The interval between the freezing and boiling points of water is 100 kelvins.
- 3
A measurement of color warmth defined by the temperature kelvin at which an incandescent blackbody would emit a given color.
摘錄自 英文維基詞典 English Wiktionary,已精簡格式;依 CC BY-SA 4.0 授權使用,改動後的內容同樣以此授權提供。