surface charges as high as 5 E.S.U./cm. 2 are retained for several years 1. The materials generally used for the preparation of these so-called ‘electrets’ are mixtures of carnauba wax and ...
Plug the USB-C end of the cable into the charging base. Plug the other end of the cable into a USB-A power source, like your Surface. Place your pen in the charging base. Wait for a moment ...
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