[TC News] New laser promises to make internet faster

Scientists have developed a new laser that holds the potential to increase by orders of magnitude the rate of data transmission on the internet. WASHINGTON: Scientists have developed a new laser that holds the potential to increase by orders of magnitude the rate of data transmission in the optical-fibre network - the backbone of the internet. The laser is the result of a...

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[TC] Home Made Movie Maker

Like real movies, this circuit makes use of a characteristic of the human eye and brain known as the persistence of vision. A sequence of still pictures is projected onto a screen in rapid succession. The pictures differ slightly from one another and the brain interprets the succession of still pictures as continuous motion. Here the pictures are shadows cast by low-voltage lamps. There are four Lamps...

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