Get smart curated videos delivered to your inbox.   SUBSCRIBE
The Kid Should See This

How to make a periscope

Watch more with these video collections:

Periscopes can help you see around corners using two mirrors placed at 45-degree angles. Learn how to make your own with this DIY cardboard periscope video hosted by mechanical engineer Dr. Shini Somara. She talks with Dyson engineers about the ways we can see and use how light travels in straight lines.

how light travels in a periscope
laser reflecting across multiple mirrors
The video is one in a series of James Dyson Foundation engineering challenges to get students excited about science and engineering. Download this handy Challenge Cards pdf for the entire set of 44 classic STEM activities, or visit their site for more information.

what to use to build a cardboard periscope
Related reading: Reflection and Refraction.

Watch this next: LENSES, an prism-filled light and sound installation.

Then check out five unique at-home science experiments with Physics Girl, and more from Dr. Somara and Dyson:
• Balloon Car Race
• Cardboard Boats
Spaghetti bridges

Bonus: Building the Giant Magellan Telescope, the world’s largest telescope.

This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.

Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.

🌈 Watch these videos next...

Yolanda Baker, last of the disco ball makers

Rion Nakaya

Yayoi Kusama’s Infinity Mirrors

Rion Nakaya

What’s on the inside of a fishing reel?

Rion Nakaya

What’s inside a tape measure?

Rion Nakaya

What’s an Engineer? + The Engineering Process – Crash Course Kids

Rion Nakaya

Turn human waste into drinking water – Janicki Omniprocessor

Rion Nakaya

The praxinoscope-style BusyBody Quick-Pose Animator

Rion Nakaya

The power of creative constraints – TED Ed

Rion Nakaya

The Ingenious Design of the Aluminum Beverage Can

Rion Nakaya