周波数

• Reading: しゅうはすう
• Romaji: shuuhasuu
• Kanji breakdown: 周 (shuu) — cycle, around; 波 (ha) — wave; 数 (suu) — number, count
• Pronunciation: /ɕɯː.ha.sɯː/

Meaning

Frequency. The number of cycles of a wave per unit of time, measured in hertz.

A physics and engineering noun used for radio waves, sound waves, and electromagnetic radiation. Common in discussions about radio, telecommunications, audio equipment, and electronics. Key collocations include 高周波数 (kou shuuhasuu, high frequency), 低周波数 (tei shuuhasuu, low frequency), and 周波数帯 (shuuhasuutai, frequency band). The unit is ヘルツ (herutsu, hertz).

Examples

1. このラジオは幅広い周波数に対応している。 This radio supports a wide range of frequencies.
2. 地震の揺れには特有の周波数がある。 Earthquake tremors have their own characteristic frequencies.
3. 周波数を変えると違う放送局が聞こえる。 Changing the frequency lets you hear different broadcast stations.

Usage Guide

Context: physics, telecommunications, audio

Tone: neutral

Origin & History

From Sino-Japanese: 周波 (shuuha, cycle wave) + 数 (suu, number). Literally 'number of wave cycles' — how many times a wave repeats per second.

Cultural Context

Era: Modern

Generation: All ages

Social background: Universal