how to make periscope working model using cardboard and mirrors – science project for exhibition | DIY pandit

This model demonstrates the principles of light reflection and how periscopes are used to see over or around obstacles. Enjoy your hands-on science project!

Creating a working model of a periscope using cardboard and mirrors is a fun and educational project. Here’s a step-by-step guide:

Materials Needed:

  • Cardboard (sturdy enough to hold its shape)
  • Two small mirrors (about 2″ x 2″)
  • Craft knife or scissors
  • Ruler
  • Pencil
  • Hot glue gun or strong adhesive
  • Tape

Step by Step Video Instructions:

  1. Prepare the Cardboard:
    • Cut the cardboard into four rectangles. The size will depend on how large you want your periscope to be, but a good starting size for each piece is 12″ x 4″.
    • These rectangles will form the sides of the periscope.
  2. Mark the Mirror Positions:
    • On two of the cardboard rectangles, draw a diagonal line from one corner to the opposite corner. This line will be used to position the mirrors.
    • On the first rectangle, mark a spot along the diagonal line about 1 inch from the top. This is where the first mirror will be placed.
    • On the second rectangle, mark a spot along the diagonal line about 1 inch from the bottom. This is where the second mirror will be placed.
  3. Cut the Mirror Slots:
    • Using the craft knife, carefully cut slits along the marked spots on the diagonal lines. These slits should be just wide enough to fit the edge of the mirrors snugly.
  4. Insert the Mirrors:
    • Insert the mirrors into the slits at a 45-degree angle. The reflective side of each mirror should be facing inward, so they reflect light down the length of the periscope.
    • Secure the mirrors in place using hot glue or strong adhesive. Ensure they are stable and at the correct angle.
  5. Assemble the Periscope Body:
    • Arrange the four cardboard rectangles into a rectangular tube shape, with the mirrors positioned at opposite ends, facing each other.
    • Use hot glue or strong adhesive to attach the edges of the cardboard together. You can also reinforce the edges with tape for extra stability.
    • Ensure the mirrors are aligned so that light entering one end of the periscope will be reflected from one mirror to the other, and then out the other end.
  6. Test the Periscope:
    • Look through one end of the periscope. You should be able to see out the other end, with the mirrors reflecting the view.
    • Adjust the mirrors if necessary to ensure the view is clear and properly aligned.

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