Barometers are one of the most important tools in weather prediction, measuring air pressure to help determine the forecast. This photo showcases simple barometers with a white face and black needle gauge in a barometer factory.
Embroidery machines decorate fabrics with a needle and thread. Learn about embroidery machine products here and find links to supplies of machine embroidery equipment and accessories.
Engineers at MIT have developed a Velcro-like sensor made from silk microneedles that detects if food is contaminated with bacteria or spoiled using color-changing 'bioinks.'
Daily Mail. Wed, 09 Sep 2020 20:22:31 GMT.