⏳Magical effect of sand
This process resembles a landslide, but with one important feature: it moves in the opposite direction - not from top to bottom, but from bottom to top. Scientists call this natural phenomenon a regressive landslide.
🤩 A double pendulum is a simple physical system that exhibits complex and varied dynamic behavior that is highly dependent on the initial conditions.
Читать полностью…Illusion by Joseph Jastrow 😵💫
Our brain is deceived by the difference in the length of the major and minor radii. The short side visually lengthens the long side, and the long side makes the short side even shorter.
🤩 The Chinese strike again
In Shenzhen, 8,100 drones took to the skies, perfectly synchronized and putting on a grand show.
⏳Unusual window with a “sand” curtain
This sand curtain is much more interesting than ordinary curtains or blinds. To close or open a window, you just need to flip the curtain, which works on the hourglass principle, and wait a little.