Introduction
The purpose of this experiment is to show how the light shines through a tiny whole creating a picture. This experiment is important because people use pinhole cameras now to study how light rays project an image. Physics is used in this lab when the light travels causing the rays to bend producing an image on the white paper which is the opposite side of the box. Doing this project you’ll learn that not only technology and lenses create images. At the end of the lab you’ll expect to see an inverted image appearing onto the opposite side of the box. If the camera is dark inside and sunlight shine only through the tiny pinhole, then your image will appear on the opposite side of the box because of the light rays.
Materials & Procedure
My team found an empty box to use as the base of the camera. Black construction paper was taped down in the inside of the box with Duct tape to darken it. We then cut a small square in the box and taped Aluminum Foil over the square. A pencil was used to poke a tiny hole through the Aluminum to be used as a pinhole. We cut another hole in a circle shape so we could insert the Styrofoam as the viewing window. In the inside we made sure everything was black before taping down a piece of copy paper facing the opposite side of the pinhole.
During this lab we’ve used some household materials like:
- A box (Domtar Copy)
- Aluminum Foil (Reynolds Wrap)
- Duct tape
- Styrofoam
- White copy paper
- Black construction paper
- Black trash bag
- Box cutter
- Sharpened pencil
Results
Our result was an upside photo of what the sunlight was projecting through the pinhole.
Analysis
Our purpose was to show how a little bit of light can make a big scene into a small picture while everything else surrounding it is opaque. The results was an inverted picture appearing on the white copy paper. I could also predict by doing this lab that the camera project any image the light gives it. The data supports my hypothesis because in my hypothesis it says that the image will project on the opposite side of the pinhole and it did in the picture of the window above. Another experiment or study could be creating something else projecting a picture without using technology or even studying the sun rays and how they bend to create images.
Equation:
The equation was size of pinhole x size of pinhole x 750. You’d get your answer after you plug in your numbers. Ex: .02mm x .02mm x 750 = .3mm
Works Cited
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