If you know your U.S. history, there have been several attempts to adopt the metric system, all to no avail. It's the universal standard for most of the world and way more intuitive, yet the chances ...

A new laser-based method for measuring millimeter distances more accurately than ever before -- with an uncertainty of 10 picometers (trillionths of a meter) -- has been developed and demonstrated by ...

Heart problems, such as tachycardia and fibrillation, arise mainly from imperfections in the way electric currents propagate through the heart. Unfortunately, it is difficult for doctors to study ...

A new laser-based method for measuring millimeter distances more accurately than ever before--with an uncertainty of 10 picometers (trillionths of a meter)--has been developed and demonstrated by a ...

Imperfect current propagation in the heart is responsible for most cardiac diseases. Thanks to a novel magnetocardiography technique, we can now image these currents at millimeter-scale resolutions.