An Isochrone curve is the curve for which the time taken by an object sliding without friction in uniform gravity to its lowest point is independent of its starting point. The curve is a cycloid, and the time is equal to π times the square root of the radius over the acceleration of gravity.
- A ball set on an Isocrone (or Tautochrone) curve will reach the bottom at the same length of time no matter where you place the ball, so long as there is no impeding friction.
[Gif] - Four balls slide down a cycloid curve from different positions, but they arrive at the bottom at the same time. The blue arrows show the points’ acceleration along the curve. On the top is the time-position diagram.
This GIF shows how the toucan releases heat using its beak to cool itself off.
The toucan beak isn’t just beautiful, it’s also an adjustable thermal radiator that the bird uses to warm and cool itself. When the bird is hot, the blood vessels in their beak open up to allow more circulation to enable heat to escape. Birds can’t sweat so evolution has come up with some life hacks to get the job done. [video]
our chemistry teachers are so punny
Wisdom teeth with magnificent roots
Dandelions are the enemy in the war for the pristine green lawn. However, they are incredibly beneficial to many insects and pollinators, and there are a variety of ways to cook and eat them.
Ode To The Dandelion
University of Maryland Medical Center - Dandelion
National Gardening Association - Fall Garden Cover Crops
The last words said by Black youth murdered by policemen. Rest in peace.