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The Dyson V10 Konical is an affordable cordless vacuum that performs well on carpets and rugs, outperforming some pricier Dyson models in testing.
Drake Anthony reproduces the effect, discovered in 1675, of mercury glowing when shaken in a vacuum glass tube. By filling the tube with neon gas, he creates a mechanical light bulb with astonishing brightness, demonstrating a plasma light-emitting device that requires no external electric field.
The article provides a byte-by-byte analysis of PostgreSQL's VACUUM process at the page level, using pageinspect to show how dead tuple space is reclaimed.