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The monster atomic bomb that was too big to use by DemiGuru

In 1961, the Soviet Union tested a nuclear bomb so powerful that it would have been too big to use in war. And it had far-reaching effects of a very different kind.APOCALYPSE WEEKThe fear and the fascination of doomsdayIn the run-up to the US solar eclipse on 21 August, BBC Future is running a special

ByHackTechAugust 8, 20230Comments

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Atomic SWAR Token Buckets by jart

tokenbucket.c provides multithreaded lockless SWAR (SIMD within a register) token bucket implementation using C11 atomics. It’s used by the redbean web server to protect our self-hosted production services from DDOS attacks. Based on our experience, it foils attackers much more effectively than Cloudflare. The basic idea here is you can allocate an int8_t array with…

ByHackTechNovember 28, 20220Comments

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JILA strontium atomic optical lattice clock (2015) by sriku

JILA’s strontium lattice atomic clock now performs better than ever because scientists literally “take the temperature” of the atoms’ environment. Two specialized thermometers, calibrated by NIST researchers and visible in the center of the photo, are inserted into the vacuum chamber containing a cloud of ultracold strontium atoms confined by lasers. Credit: Marti/JILA In another…

ByHackTechMarch 12, 20220Comments

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