We Turned this Truck into a GIANT CAMERA! | Summary and Q&A

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September 24, 2018
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Physics Girl
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We Turned this Truck into a GIANT CAMERA!

TL;DR

Dianna Cowern creates a camera obscura inside a U-Haul truck and invites people to experience the inverted, dimly projected images.

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Key Insights

  • 🛩ī¸ A camera obscura can be created inside a U-Haul truck by covering the back with cardboard and tape, leaving only a small hole for light to pass through.
  • 🙂 The images projected inside the camera obscura are inverted, backward, and dimly lit.
  • 🛩ī¸ Using a smaller hole in the camera obscura produces a sharper image but reduces the amount of light getting through.

Transcript

Yeah, when are we going to do the science? DIANNA COWERN: This is the science! Hey, I'm Dianna. You're watching "Physics Girl." And we made a camera obscura in the back of a U-Haul. So last week, I held a meetup in San Diego with donuts and science, which attracted some awesome people, including the star of the show, Lily. I need everybody to scoo... Read More

Questions & Answers

Q: What is a camera obscura?

A camera obscura is like a dark room or chamber that uses ambient light to project an upside-down and backward image on a surface. It is often used for tracing or as a projector.

Q: How does a camera obscura work?

The camera obscura works by allowing light to pass through a small hole, similar to the pupil in our eyes. The hole keeps the light in order, resulting in an inverted and dimly projected image.

Q: What are the benefits of using a small hole in a camera obscura?

By using a small hole, the image projected becomes sharper as the colors bleed less. However, a smaller hole also means a dimmer image due to less light getting through.

Q: What historical significance does a camera obscura have?

Camera obscuras were historically used to study the sun and observe solar eclipses. The projected image allowed for safe observation of the sun and its details.

Summary & Key Takeaways

  • Dianna Cowern holds a meetup in San Diego to create a massive camera obscura inside a U-Haul.

  • People inside the U-Haul experience the upside-down images projected inside.

  • The camera obscura works by allowing light to pass through a small hole, projecting an inverted image on the back wall.

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