Similar to 光による通信

CERN httpd

Protein c-Fos

ChAdOx1

Challenge-Handshake Authentication Protocol

CHD7

CID

STM-1

Optical telegraph

Heliograph

Navigation light

Landing lights

Flag semaphore

Smoke signal

Photophone

List of people considered a founder in a humanities field

Hungaria asteroids

Marine Protector-class patrol boat

.243 Winchester

.32 ACP

.45 ACP