# Light & Seeing in the Dark

Observe that objects in darkness can be seen only when illuminated by a light source

Builds on: Light & Sound Vocabulary (hard, https://ai.page/c/light-and-sound-vocabulary/en.md)

Concept id: light-and-seeing-in-the-dark. Subject: science. Licence: CC BY-SA 4.0.

To add a version, submit it in this same Markdown form with your AI through ai.page's connector (submit_version). Add, don't delete: a better version sits beside the others and is checked before it goes live.