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"A projecting watchtower, or other advanced work, before the gate of a castle or fortified town. The term Barbican was more specially applied to the outwork intended to defend the drawbridge, which in moden fortifications is called the tete du pont." — Chambers' Encyclopedia, 1875

Barbican

"A projecting watchtower, or other advanced work, before the gate of a castle or fortified town. The…

Incandescent bulbs are made in a wide range of sizes and voltages, from 1.5 volts to about 300 volts. They require no external regulating equipment and have a low manufacturing cost, and work well on either alternating current or direct current.

Incandescent Lamp

Incandescent bulbs are made in a wide range of sizes and voltages, from 1.5 volts to about 300 volts.…