振動

しんどう

oscillation, vibration

JLPT N1

Character Breakdown

Understanding 振動 (しんどう)

振動 refers to oscillation or vibration, often describing physical shaking or trembling movements. It is commonly used in scientific, engineering, and everyday contexts where something moves back and forth or shakes.

Common Contexts

You will see 振動 used to describe natural phenomena like earthquakes, mechanical vibrations in machines, or even the vibration mode of electronic devices such as smartphones. It often implies a physical movement that can be felt or measured.

Collocations and Patterns

  • 振動がある: there is vibration; used to describe the presence of shaking.
  • 振動を抑える: to suppress or reduce vibration; common in engineering or maintenance.
  • 振動で〜する: doing something due to vibration; shows cause and effect.

Usage Notes

When using 振動, the nuance is usually neutral or technical. It is not typically used for emotional or metaphorical shaking. Learners sometimes confuse 振動 with 揺れ (ゆれ), which also means shaking but is more general and often used for larger scale or less mechanical shaking. 振動 is more precise and often used in technical or physical contexts.

Register

振動 is a formal and technical term, suitable for scientific writing, news reports, and technical conversations. In casual speech, people might use 揺れ or other simpler words depending on the context.

Example Sentences

じしんのしんどうでたてものがゆれた。

The building shook due to the earthquake's vibrations.

すまーとふぉんのしんどうでつうちがきたことがわかる。

You can tell a notification has arrived by the smartphone's vibration.

きかいのしんどうをおさえるためにぼうしんそうちをとりつけた。

We installed an anti-vibration device to suppress the machine's vibrations.