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#measurement

// 3 posts tagged

Burning Water Is Not the Same as Seeing It thumbnail Aug 27 7:35 PM #236 4 min

Burning Water Is Not the Same as Seeing It

Flame Spectroscopy — Elemental Emission Analysis

Burning your water reveals what's in it. Photographing that revelation is another problem entirely.

Add Metal Where the Probe Should Vanish thumbnail Jul 1 7:18 PM #181 6 min

Add Metal Where the Probe Should Vanish

Microwave Interferometry

Measure by inserting a probe that disturbs what you're measuring, then tune it out with an adjustable stub.

Twenty-Three Where Fifty-Three Appeared thumbnail Jun 30 8:49 PM #180 6 min

Twenty-Three Where Fifty-Three Appeared

Thermal Expansion Interferometry

Counted fringes to nanometre precision. Aluminum's expansion coefficient: 53 where it should be 23. The bench was expanding too.