Which method is used in pyrotechnics for visual communication?

In pyrotechnics, visual communication is primarily achieved through the use of flares, rockets, and smoke. These methods provide a means to signal and communicate messages visually over long distances and in situations where auditory signals may not be effective.

Flares produce bright, intense light that can be seen from far away, making them useful for alerting nearby vessels or individuals. Rockets can carry signals high into the sky, allowing them to be visible over extensive areas and are often used in search and rescue operations. Smoke can create large, colorful clouds that are easily seen and can indicate location or signaling distress.

Using these pyrotechnic signals is especially important in emergency situations or in environments where visibility might be limited. This method effectively conveys messages or alerts for safety, navigation, and coordination without relying on electronic systems or manual signals like hand signals and flags.