They are "Disc Balls". Made of mirrors and hung from above the dance floor they had a small motor that turns the ball. Spot Lights are pointed at the ball and bounce off to the floor and walls around the dance floor. Amazon sell them - There are more sophisticated types that have coloured lights on a small gantry around the ball which move through the vertical and horizontal giving greater changes to the light effect.
Energy is not stored in lights (not electric ones at least). Energy is used by lights.
Those lights are glow lights. They are made of this die stuff. It is poisonous so...
Probably a roller skating club or a disco dance club
Lights use energy. Turning them off saves energy.
A masthead light, side lights and a stern light are the lights that power driven vessels less than 65.6 feet long and underway between sunset and sunrise exhibit.
Brake lights draw their energy from the vehicle's battery.
Lights don't use energy when they are off.
heat energy
When away from the dock after sunset.
When away from the dock after sunset.
When away from the dock after sunset.
House lights radiate energy as electromagnetic waves in the wavelength bands of heat and visible light.