振幅 (zhèn fú) — amplitude (of vibration)

Definition

noun

amplitude (of vibration)

振幅。
Zhè ge bō de zhèn fú hěn dà.
The amplitude of this wave is very large.
振幅。
Wǒ men xū yào cè liáng shēng yīn de zhèn fú.
We need to measure the amplitude of the sound.
振幅，。
Zhèn dòng de zhèn fú yuè dà, néng liàng jiù yuè dà.
The greater the amplitude of vibration, the greater the energy.

Compound word

构词法gòucífǎ

偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

振zhènvibration

幅fúamplitude

振 (vibration) and 幅 (width) combine into the width of a vibration.

Characters in this word

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú

Sound part声符shēngfú

辰

Close in sound todayThe sound part was a clue two thousand years ago — it often still helps, but not always.

振 pairs 手 (hand) with 辰: 手 shows it is about a hand action, and 辰 gives the sound.

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

巾畐幅

Meaning part形符xíngfú

巾巾jīnclothing

Sound part声符shēngfú

畐

畐fú幅⁰fú

Same sound today

幅 is built from 巾, a component related to cloth or clothing, and 畐, which gives its sound.