Festo HQ, the engineering team that brought us Aqua Penguins, Aqua Jellyfish, dragonfly-inspired BionicOpters, and a robot that flies like a bird can now add Bionic Kangaroo to their list of animal-inspired achievements in technology. From spectrum.ieee.org:
BionicKangaroo is able to realistically emulate the jumping behavior of real kangaroos, which means that it can efficiently recover energy from one jump to help it make another jump. Without this capability, kangaroos (real ones) would get very very tired very very quickly, but by using their tendons like elastic springs, the animals can bound at high speeds efficiently for substantial periods of time.
BionicKangaroo emulates this with an actual elastic spring, which partially “charges” the legs on landing.
Bonus fun: wear the corresponding armband and you can control the kangaroo using gestures. Mmmmmmm, biomechanics.
That moment that ketchup transitions from a solid, high up in the ketchup bottle, to a liquid that squirts all over your fries – that moment is a big physics moment. Why? Ketchup is a non-Newtonian fluid (like oobleck, peanut butter, custard, toothpaste, paint, blood, or quicksand) that can switch between a solid and liquid state, and ketchup is non-Newtonian in two different ways…
In that transition moment, ketchup may be responding to a strong, quick force, suddenly making it thinner, or if you’re patient and apply just a wee bit of force, it may start flowing given some time and gravity. Grab a ketchup bottle and get the details in this TED Ed lesson by George Zaidan, with animation by TOGETHER.
Related watching: oobleck, TED Ed, the incredible physics of ants, and more about that sugar in your ketchup.
Generate your own electricity with some wire, a magnetic field, and the relative movement between the two of them: Alom Shaha explains electromagnetic induction using this hand-powered – or perhaps more accurately, bacon-sandwich-powered – generator.
Related watching: magnetic fields, probably one of the more awe-inducing subjects on this blog.
via Science Demo.