light signal

Examples (10)

• A red traffic light signal indicates that you must stop.
• The lighthouse emitted a powerful light signal to guide ships.
• He used a flashlight to send a coded light signal across the valley.
• The flashing light signal warned of an impending danger.
• Researchers are studying how to use light signals for faster communication.
• The emergency flare sent a bright light signal for help.
• The railway system relies on precise light signals to manage train movements.
• She observed the intermittent light signal from the distant aircraft.
• The technician confirmed that the device was transmitting a stable light signal.
• The presence of bioluminescent organisms can create a natural light signal in the ocean.