What does a 'trace' of rain mean and how do they measure it?

Yes, you may have felt rain at your house, but the next day's report could still only show a 'trace.' Here's why.

Puerto Rico governor signs law to recognize fetus as human being as critics warn of consequences

Puerto Rico’s governor on Thursday signed a bill that amends a law to recognize a fetus as a human being, a move doctors and ...

Bay Area arts: 9 shows and concerts to catch this weekend

From the perfect Valentine’s Day band to Opera San Jose’s take on “Salome,” there are great shows to catch this weekend and ...

Kansas lawmakers ignore audit and risk millions in SNAP penalties

Kansas lawmakers are ignoring the recommendation from their own auditors for how to address a problem that could cost taxpayers millions of dollars.
IEEE

Measurement Accuracy Improvement of Homodyne Laser Diode Interferometer by Real-Time Nonlinear Error Suppressing

Abstract: Compact homodyne laser diode interferometers (HLDIs) can not only be applied as an instrument for off-machine measurement, but also be integrated into an equipment as a sensor for on-machine ...
The Texas Tribune

Low test scores on one campus can trigger a state takeover in Texas, affecting Black, Hispanic and low-income students most

The demographic makeup of the trigger schools raises questions about whether Texas' accountability system fairly considers historic inequities tied to race and poverty.
IEEE

Current Measurement Error Compensation Based on Current Ripple Component Decoupling for PMSM Drives

Abstract: Current measurement errors (CMEs) including the offset error and scaling error exist in permanent magnet synchronous motor (PMSM) drive systems. It will ...