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California 3D printer bill threatens digital freedoms • The Register

California 3D printer bill threatens digital freedoms • The Register

[ad_1] California’s proposed legislation to put the burden of blocking 3D-printed firearms onto printer manufacturers could effectively sideline open source tools and create new surveillance concerns, digital rights activists argue. Advocates at the Electronic Frontier Foundation (EFF) say that such legislation could empower manufacturers to introduce restrictive policies affecting consumer choice. It could lead to …

Physicists think they’ve resolved the proton size puzzle

Physicists think they’ve resolved the proton size puzzle

[ad_1] A puzzling discrepancy A vacuum chamber used to measure electron transitions in atomic hydrogen Credit: Axel Beyer/MPQ A vacuum chamber used to measure electron transitions in atomic hydrogen Credit: Axel Beyer/MPQ Subsequent measurements by various groups were inconclusive. For instance, in 2013, the same international team performed muon-based experiments that confirmed their 2010 value, …