Kısaca
Some materials drop electrical resistance to zero at very low temperatures, letting current flow without loss. They also expel magnetic fields, producing the levitation-like Meissner effect.
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Kısaca
Some materials drop electrical resistance to zero at very low temperatures, letting current flow without loss. They also expel magnetic fields, producing the levitation-like Meissner effect.
Sharks appeared 220 million years before dinosaurs. The first sharks began to live in the seas 450 million years ago.
Venus rotates on its axis in 243 Earth days but orbits the Sun in 225 days.
The Sun"s diameter is 109 times Earth"s. Its volume is massive enough to contain 1.3 million Earths.
Some fluids can turn rock-hard under impact: stir or hit fast and viscosity jumps. When force stops, it returns to normal—there are ‘liquid’ materials that act like armor.
Without gravity, tears form a ball around the eye. If astronauts don"t wipe them, vision gets blurry.
Explosions in space movies are loud, but in reality sound cannot propagate in vacuum. Sound needs a medium to carry vibrations, and space lacks it.
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