Trapezoidal threads are used for lead screws because they are one of the strongest symmetric profiles. This tooth shape is stronger than a similarly sized square thread becuase of its wider base.

Since becoming a freelance writer in 2019, Emily has developed significant experience covering viral pop culture ...

Intel fellow Sailesh Kottapalli, a 28-year Chipzilla veteran who worked as lead engineer on many of Xeon server processors, has left the company and joined Qualcomm. Kottapalli announced his job ...

A new report finds that a substantial proportion of over-the-counter protein powders contain potentially unsafe levels of lead and other toxic metals. Researchers at the non-profit organization ...

Korin Miller is a writer specializing in general wellness, sexual health and relationships, shopping, and lifestyle trends, with work appearing in Women’s Health, Self, Prevention, Daily Beast ...

Which heavy metals were found in protein powders? Lead and cadmium were found in a majority of the protein powders that were tested. There is no safe level of lead, which has been linked to ...

Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being. Over-the-counter ...