Latest in Science

Image credit:

Man illuminates electromagnetic waves using coffee cans and LEDs, Christmas-colored science ensues

Michael Gorman, @Numeson
December 16, 2011
Share
Tweet
Share

Sponsored Links

Electromagnetic radiation is all around us, but we're largely unaware that our bodies are constantly bathed in waves of the stuff because our eyes aren't equipped to see most of it. Dr. Gregory Chavat decided to give us a glimpse of an EM waveform, however, by using a coffee can radar system, a couple of LEDs, and long-exposure photography. The setup consisted of a radar emitter made out of one coffee can and a second can with a couple of LEDs attached to serve as a tethered receiver antenna. Those LEDs were then set to that light up red or green to illuminate the EM wave peaks and valleys. By moving the receiver closer and further away from the emitter while taking a long exposure photo, the good doctor was able to capture the wavefront radiating on film, and let you see the unseen with a bit of Christmas-colored flair. Check the video below for a fuller explanation, and hit the more coverage link to learn how to build a coffee-can radar and perform some basement black magic yourself.





All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.
Share
Tweet
Share

Popular on Engadget

A number of first-party Nintendo Switch games are on sale at GameStop

A number of first-party Nintendo Switch games are on sale at GameStop

View
Tom Hanks: 'Absolute heartbreak' that 'Greyhound' won't debut in theaters

Tom Hanks: 'Absolute heartbreak' that 'Greyhound' won't debut in theaters

View
‘Assassin’s Creed Valhalla’ gameplay footage surfaces in leaked videos

‘Assassin’s Creed Valhalla’ gameplay footage surfaces in leaked videos

View
The best budget smart TVs and streaming devices for students

The best budget smart TVs and streaming devices for students

View
Microsoft and Bridgestone launch real-time tire damage system

Microsoft and Bridgestone launch real-time tire damage system

View

From around the web

Page 1Page 1ear iconeye iconFill 23text filevr