How to date vintage clothes by zippers when you’re thrifting

You’re flipping through a packed thrift rack and something stops you: a perfect little mod shift, or a “maybe 40s?” rayon ...

Here’s what the hole in a safety pin is really for

You'll never look at a humble safety pin the same way again ...
Everyday Health on MSN

The 11 best pillows for back sleepers loved by testers and experts

Discover our testers’ and sleep experts' favorite pillows for back sleepers, including the best down, memory foam, wedge, and budget-friendly options.
IEEE

A Practical Approach for Estimating Bundle-Level Proximity Losses in AC Machines

Abstract: Losses created by skin and proximity effects can be significant in medium to high-speed ac machine designs. These have been extensively studied for form wound coil machines, but regarding ...
IEEE

Framework and Solution Techniques for Suppressing Electric Machine Winding MMF Space Harmonics by Varying Slot Distribution and Coil Turns

Abstract: This paper studies the design of electric machine windings with reduced magnetomotive force (MMF) space harmonic content by adjusting the slot distribution and coil turns. Closed-form ...