検出

1. Origins, structure, and basic meaning

• Structure: 検出 (けんしゅつ) denotes detection by a device, test, or similar method and forms 検出する.
• Basic usage: 振動を検出した is an active detection; 値は検出されなかった is a passive negative result.

2. Common pitfalls and similar expressions

• Active detection and passive non-detection
  • The active form marks what was found with を; 検出されなかった makes the searched-for value the subject and states that none was found.