Ever since Apple introduce MagSafe charging into the iPhone 12 lineup, there have been countless accessory companies trying to earn market share by creating MagSafe-compatible products. We have seen ...

Headlights are one of a car’s most essential safety features, and they have improved dramatically in recent years. For example, an increasing number of new vehicles come with innovative HD ...

This is a preview. Log in through your library . Abstract In this note an elementary method of calculating any power of a given matrix is described. The method is quite similar to that presented by I.

A silicon valley startup wants you to have one less charger in your life thanks to its exercise-tracking smartwatch design that allows a wearable device to be powered via the user's own body heat. The ...

Matrix Industries has unveiled the second generation of its body-heat-powered smartwatch that you don’t have to charge. As long it is touching your skin, the PowerWatch 2 doesn’t need a new charge.

The Leontief matrices of inter-industry transactions are large, a row for each industry in a nation. It would be desirable to invert such matrices of an order of from 100 to 200. The present paper ...