Canadian shoppers who own power inverters will want to check if theirs is part of an urgent country-wide recall.

Abstract: In this work, the defect detection method of different shapes and sizes by point-focusing shear-horizontal guided wave EMAT with the use of Periodic Permanent Magnet (PPM) is investigated ...

You’ve probably seen Lichtenberg figures before, those lightning-like traces left by high-voltage discharge. The safe way to create them is using an electron beam to embed charge inside an acrylic ...