Headlamp

A headlamp is a light bulb mounted on the front of a machine. Normally it is mounted on a car. It shines forward. It can be turned on and off. It is used to see ahead of the machine so it wouldn't drive into trees or telephone poles. Incandescent bulbs and a variant known as halogen bulbs are the most common types. They are normally bright.

• Fluorescent bulb
• Mercury-vapor lamp
• Sodium vapor lamp

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