V2EX planck constant

Planck Constant

定义 Definition

普朗克常数(符号 h)是量子物理中的基本常数,用来把光(或其他量子)的能量与其频率联系起来:E = h f。其精确定义值为 6.62607015 × 10 Js(国际单位制 SI 中被固定为精确值)。

发音 Pronunciation

/plk knstnt/
/plk knstnt/

词源 Etymology

该术语以德国物理学家马克斯普朗克(Max Planck)命名,他在研究黑体辐射时提出能量量子化思想,从而引入了常数 h。“constant”来自拉丁语 constare(意为“保持稳定、站得住”),在科学语境中指“数值不随情况变化的量”。

例句 Examples

The Planck constant is denoted by h.
普朗克常数通常用符号 h 表示。

Using the Planck constant, we can compute a photon’s energy from its frequency.
利用普朗克常数,我们可以由光子的频率计算其能量。

相关词 Related Words

文学与著作 Literary Works

  • Max Planck《On the Law of Distribution of Energy in the Normal Spectrum》(1901):普朗克在黑体辐射研究中引入 h 的经典论文。
  • Albert Einstein《On a Heuristic Point of View Concerning the Production and Transformation of Light》(1905):用到 h 讨论光量子(光子)与能量频率关系。
  • Richard P. Feynman《The Feynman Lectures on Physics》:以入门方式多次使用并解释普朗克常数在量子现象中的角色。
  • David J. Griffiths《Introduction to Quantum Mechanics》:量子力学教材中频繁出现 h(及 )用于基本公式与推导。
About     Help     Advertise     Blog     API     FAQ     Solana     5518 Online   Highest 6679       Select Language
创意工作者们的社区
World is powered by solitude
VERSION: 3.9.8.5 37ms UTC 09:04 PVG 17:04 LAX 02:04 JFK 05:04
Do have faith in what you're doing.
ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86