What are the main components of a Woods lamp?

The Woods lamp, also known as Wood's light, consists of several key components that work together to produce and filter ultraviolet (UV) light:

1. **Light Source**: Typically a fluorescent bulb or LED that emits light across a broad spectrum, including ultraviolet wavelengths.

2. **UV Filter**: A crucial component made of a special glass or plastic containing nickel oxide or other materials that block most visible light (400-700 nm) while allowing UV light (around 365 nm) to pass through.

3. **Reflectors and Lenses**: These components help direct and focus the UV light emitted by the bulb, ensuring efficient projection of the light beam.

4. **Housing**: The physical structure that contains and protects the internal components, typically designed for portability and safe handling.

5. **Power Source**: Usually batteries or an electrical cord to supply power to the light source.

6. **Switch**: Allows the user to turn the lamp on and off as needed.

The combination of these components enables the Woods lamp to produce UV light that can be used for various applications, including dermatological diagnosis, mineral detection, and forensic investigations.

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