A correspondent informs us that a friend of his has invented a new gnomon for sun-dials, which is simply a piece of thread or twine carried at an angle from the center of the dial to a post set at ...

In a diagram, they showed that they experimented with three gap sizes as they weaved thread into a piece of fabric. “To create extra space for separation and enhance triboelectric output ...

What is thread count? Woven fabric is made of horizontal (weft) and vertical (warp) yarns. If a piece of fabric has 100 warp yarns and 100 weft yarns in a square inch, it would be a 200-thread ...