英和和英

語源

Named after Irish-born Scottish physicist William Thomson, Lord Kelvin.

発音

• (英国発音) IPA: /ˈkɛlvɪn/
• (米国発音) IPA: /ˈkɛlvɪn/, /ˈkɛlvən/, [ˈkʰɛɫvɨn]
• 韻: -ɛlvɪn, -ɛlvən

名詞

kelvin (plural kelvins)

1. In the International System of Units, the base unit of thermodynamic temperature; ⁄_273.16 of the thermodynamic temperature of the triple point of water.

   Alternative forms: K (symbol); °K (the latter is deprecated)

   Synonyms: degree Kelvin, degree absolute (both are deprecated)

   Ice melts above 273.15 kelvins.

   Water boils above 373.15 kelvins.

2. One degree of difference on this scale, as a unit interval.

   Alternative forms: K (symbol); °K (the latter is deprecated)

   Synonyms: degree Kelvin, degree absolute (both are deprecated)

   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.

使用する際の注意点

• As with all SI units, the ordinary English plural kelvins is the recommended one; however in literature it is equally common to treat it as an invariant plural, albeit nonstandard.
• The term degree Kelvin is nowadays nonstandard and proscribed.
• One kelvin as a unit interval is the same amount of difference (temperature change) as one degree Celsius as a unit interval. (For example, 0 °C is to 2 °C just as 273.15 K is to 275.15 K.)

派生語

Further reading

• “kelvin”, in OneLook Dictionary Search.