Kelvins: a CFL's color is indicated by the Kelvin (k) temperature (listed on the package).
译者注：色温是表示光源光色的尺度，单位为K开尔文。色温是在摄影、录象、出版等领域具有重要应用。
2
With a temperature of 3,000 kelvins, this ring of heat speeds along the tube 10,000 times faster than the normal spread of this chemical reaction.
当温度达到3000开尔文（Kelvin，热力热温度，等于摄氏温度加273），这个热量环（ring of heat）沿着纳米管移动的速度将比这类化学反应（chemicalreaction）的正常传递速度快10000倍。
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Over the past 45 years or so, we've confirmed that this energy is peaked practically exactly at 2.725 Kelvins — just a slight bit above absolute zero — everywhere in the sky!