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瓦 (單位)

出自維基百科,自由嘅百科全書

火數watt[1],或者叫瓦特)係國際單位制功率計量單位,符號係W[1]。一瓦等如指每1焦耳能量速率。

個單位用咗蒸汽機嘅改良人,瓦特個名來紀念佢。

舊時瓦寫做瓦寫做瓦寫做瓦(十分一瓦)寫做瓦(百分一瓦)寫做或者瓦(千分一瓦)寫做。呢啲寫法係來自日本明治時代,之不過呢個瓦係瓦蘭姆,係日本音譯gramme,家下中文咁解,係重量單位。之後中國引進呢種寫法,變咗係功率單位。

[編輯]
  1. 1.0 1.1 全寫watt一定要細楷,符號要寫大楷W
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