joule
joule — 名詞
- joulesingular
- joulesplural
1. the standard scientific measure used to count how much energy is moved or how mu
焦耳
能量與功的國際標準單位
the standard scientific measure used to count how much energy is moved or how much work is done, named after the British scientist James Prescott Joule.
Nellie's physics teacher said lifting an apple one meter costs about one joule.
Nellie 的物理老師說，把一顆蘋果抬高一公尺大約要花一焦耳。
countable singular: 'one joule of energy'
The label on the cereal box gives the energy value in both calories and joules.
麥片盒上的標籤同時用卡路里和焦耳標示能量值。
collocation: energy value in joules (food labels)
Paloma's heater uses about three thousand joules every second to keep the room warm.
Paloma 的暖氣機每秒大約使用三千焦耳來讓房間保持溫暖。
Scientists measure the energy released by a falling rock in joules, not in pounds.
科學家用焦耳測量落下石頭釋放的能量，而不是用磅。
A small spark from a battery may carry only a few joules of electrical energy.
電池發出的小火花可能只帶有幾焦耳的電能。
- watt-second
equivalent unit (1 J = 1 W·s); used mostly in electrical contexts
- newton-meter
equivalent for work done by a force; same physical quantity as a joule
文法句型
one joule
X joules of energy
measured in joules
用法筆記
Subject of measurement is usually energy, work, or heat — never time or distance. Often paired with 'per second' to express power (watts). The plural 'joules' is used with any number other than one.