boat

Showing 23 posts tagged boat

From the BBC’s Ocean Giants documentary, watch this incredible clip to hear the extraordinary and mysterious song of the Humpback Whale. Why do they sing (or hum)? Does it serve a purpose? Are they making music for pleasure? Are they talking?

If this clip disappears, you can find the entire documentary on Amazon. And in the archives: watch more whale videos, including a surprise diving encounter with a Humpback Whalethis huge baby Sperm Whale, and Whale Fall (After Life of a Whale).

From the Ri Channel's View the Tales from the Prep Room series, this is how you make a fluidized bed of sand: Making Sand Swim. Watch how these solids suddenly behave a lot like a fluid as air escapes between the sand particles, causing them to float. It’s definitely one of the more strange and fascinating demonstrations that we’ve seen. 

Related watching: ScienceDemo.org, and at RIGB.org, a video list that I put together for The Royal Institution that has our favorite STEM videos for kids… well, at least some of our favorites. There are so many.

We want to learn how to make flying vehicles like this. Meet Luigi Prina, the 83-Year-Old Builder of Flying Model Ships, in this fascinating video profile: The Ships That Sail Through The Clouds

The flying ships are made from ultrathin paper and balsa wood. Everything is optimized for flight: from the weight (between 20 and 50 grams) to the aerodynamic shape. They fly like any propeller airplane. The only difference is that here the propeller is powered by an internal elastic band and not an engine.

Photo by Gianluca Giannone. Read more about Luigi Prina at Blinking City.

Related must-watch videos: a rubber-band-powered paper robotan RC Flapttera kite-like wind sculpture, a human-powered helicopter, and a great science class project: DIY walkalong gliders

via Colossal.