This paper presents the history of the development of SAE Standard J986, "Sound Level for Passenger Cars and Light Trucks," and its subsequent revisions. The major issues considered and the rationale ...

Scientists have approved the introduction of four new prefixes that can be applied to units of measurement in the metric system. When you purchase through links on our site, we may earn an affiliate ...

The metric system is on track for a mass makeover. In an effort to provide accurate measurements at all scales, scientists are preparing to redefine four basic units by the end of 2018. The shift will ...