A periscope is a device that allows you to see objects that are not directly visible, often used in submarines and trenches. A working model of a periscope is simple to construct and effectively demonstrates the principle of reflection using mirrors.
Components of the Model
- Cardboard Tube or Box: Acts as the body of the periscope, keeping the mirrors aligned.
- Two Mirrors: Flat mirrors placed at a 45-degree angle at opposite ends of the tube.
- Viewing Holes: Small openings at the top and bottom of the periscope for observing.
How It Works
- Reflection of Light: Light from the object enters through the top hole and hits the first mirror, which reflects it downwards.
- Second Mirror: The reflected light then hits the second mirror at the bottom, which redirects it towards the viewer’s eye through the bottom hole.
- Line of Sight: This arrangement allows the viewer to see over obstacles or around corners while remaining out of sight.
Conclusion
This working model illustrates the laws of reflection and the practical application of mirrors. It’s a fun and engaging way to explore basic physics principles, showing how light travels and reflects to create visibility in hidden areas.