Here's a Question! - Image from a Pinhole Camera
A pinhole camera is made from a cardboard box. The back of the box is replaced with wax paper so that the images can be seen from the outside. The word "Hi!" is written on a lightbulb and the light bulb is placed in front of the pinhole camera. What will the word "Hi!" look like on the wax paper?
Announcer: Frostbite Theater presents... Cold Cuts! No baloney!
Joanna and Steve: Just science!
Joanna: Hi! I'm Joanna!
Steve: And I'm Steve!
Joanna: Here's a question for you...
Steve: A pinhole camera is made from a cardboard box. This is done by cutting a hole in the front of the box, covering the hole with a piece of aluminum foil, and then poking a hole through the foil with a pin. Also, the back of the box had been removed and replaced with wax paper so that the images can be seen from the outside.
Joanna: The word "Hi!" is written on a lightbulb and the light bulb is placed in front of the pinhole camera.
Steve: The room's lights are turned off and the lightbulb is turned on.
Joanna: What will the word "Hi!" look like on the wax paper?
Steve: Will it be right side up and written left to right?
Joanna: Will it be upside down and reversed right to left?
Steve: Will it be right side up and reversed right to left?
Joanna: Or, will it be upside down and written left to right?
Pause the video now if you'd like to think it over before we show you what happens.
Joanna: Imagine you're in a room with a single window on a distant wall. You can't see all of the outside world at one time. You can only see what's in line with you and the window.
Steve: If you want to look up into the sky, you have to get down near the floor.
Joanna: If you want to look at what's to the left, you have to move to the right.
Steve: This is how the pinhole camera works. Only light coming from a particular direction can fall on a particular part of the wax paper.
Joanna: You end up with an image that's upside down and reversed left to right.
Thanks for watching. I hope you'll join us again soon for another question!
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