Each high school in the region is invited to send one or more teams of four students to compete in the 2008 Western Kentucky Physics Olympics. This year’s event will commence with theDematerialization ...

Hacker [Dino Segovis] is back again with the fifth installment in his “Hack a Week” series. This time around he has put together a 1/2 watt audio amplifier that would make for a great weekend ...

Bust out that 555 timer and use it to build your own AM radio transmitter. The circuit that [Rtty21] is using only needs the timer chip, an NPN transistor, three caps, three resistors, and a potent… ...

Yesterday morning we made a spectroscope — a device that breaks light down into a rainbow of component colors — from a cardboard box and an old DVD. Different light sources give you different ...

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The ready availability of very strong permanent magnets in the form of rare-earth magnetic alloys such as neodymium-iron-boron has lead to renewed interest in one of the oldest types of electric ...

Some simple demonstration experiments involving homopolar motors Algumas experiências simples de demonstração envolvendo motores homopolares ...