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When cooled, a superconducting disk drops its resistance and can “lock” magnetic fields. The result is a levitation show that looks almost frictionless over a magnetic track.
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Kısaca
When cooled, a superconducting disk drops its resistance and can “lock” magnetic fields. The result is a levitation show that looks almost frictionless over a magnetic track.
The lifespan of dragonflies generally lasts 4 to 6 weeks, but some species can live for several months. Details in our article.
Atomic clocks keep time by counting an atom’s ultra-regular vibrations billions of times per second. That’s why GPS can drift if timing slips by mere nanoseconds.
Most of the universe may be invisible: dark matter emits no light, yet gives itself away through gravity. Galaxy rotation and lensing hint at an unseen ‘skeleton.’
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.
Ostriches have eyes that are larger than their brains. This interesting feature allows them to see their surroundings better.
The total weight of all the people living in the world is 287 million tons. This figure is an interesting data point to consider when thinking about the life of our planet.
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