Superconductors

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Physics

Some superconductors, when cooled below their critical temperature, exhibit the Meissner effect, completely expelling magnetic fields from their interior. elaborate share

Gravity

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Physics

Lab-grown meat, or cultured meat, uses significantly less land and water than traditional livestock farming. elaborate share

Light

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Physics

Light from the sun takes about 8 minutes to reach Earth. elaborate share

Stringtheory

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Physics

String theory requires more than the usual three spatial dimensions and one time dimension; it posits the existence of extra, curled-up spatial dimensions unseen at macroscopic scales. elaborate share

String Theory

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Physics

String theory requires more than the usual three spatial dimensions and one time dimension; it proposes the existence of extra, curled-up spatial dimensions that are too small to observe directly. elaborate share

Time

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Physics

There's no single, universally agreed-upon "beginning" of time. Our current understanding of physics suggests a point called the Big Bang, but what, if anything, came before it remains a mystery. elaborate share