Tag Archive: science


Do Real EMP Weapons Actually Exist?

World Record Domino Set-Up Robot

NASA rocket scientist Mark Rober built a robot that precisely sets up dominoes far faster than humans can. This huge mural would have taken a team of workers a week to set up. This robot will do the same in 24 hours.

On the morning of December 1st, 2020, one of the most iconic astronomical instruments in the world collapsed. The Arecibo Telescope was not only one of the largest radio telescopes in the world, it was also a fascinating problem in structural engineering. Its loss was felt across the world. Practical Engineering provides a quick lesson on radio telescopes, a summary of the failure, and some discussion about the engineering lessons learned in the wake of the event. I hope that eventually, they can replace the telescope with an instrument as futuristic and forward-looking as the Arecibo telescope was when first conceived. It was an ambitious and inspiring structure, and we sure will miss it.

February 2017 saw one of the most serious dam-related engineering incidents in history with the failure of the service spillway at Oroville Dam. Whether they realized it or not, the people living and working downstream of Oroville Dam put their trust in the engineers, operators, and regulators to keep them safe and sound against disaster. In this case, that trust was broken. Practical Engineering provides a summary of the event, including an explanation of the engineering details behind the failure.

Gav of The Slow Mo Guys plays a wine glass’s least favorite sound at extreme volumes and captures the results at 187,500 fps. That’s around 7500x slower than you can see with your own face.

Rocket scientist Mark Rober investigated some shark myths like why do sharks attack GoPro cameras?

Stephen Hawking thought an asteroid impact posed the greatest threat to life on Earth.

How high will it bounce?

A bold move, to be sure. This guy has a Ph.D in physics. Says Derek, “A UCLA Physics Professor bet me $10,000 that my video about going downwind faster than the wind was wrong.”

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