At any temperature above absolute zero, particles in a system move randomly, an effect known as thermal fluctuation. The random character of the fluctuations means they cannot be put to work in a ...
Perched on a tilted tombstone, the demon cat waits in the dark. Has it come for your soul or a scratch behind the ears? You tell us the story. “Demon Cat” is by artist Patrik Björkström (found via ...
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