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Thursday, June 28, 2012

Google launches Nexus 7 tablet.

Nexus 7.

Google took the wraps off the first device to run Android 4.1, Jelly Bean: a 7-inch tablet made by Asus, called the Nexus 7.

Tuesday, June 26, 2012

How to build hydroelectric power at home.

A diagram of the Kelvin water dropper.

The Kelvin water dropper, invented by Lord Kelvin (1867), is a type of electrostatic generator. Kelvin referred to the device as his water-dropping condenser. The device uses falling water drops to generate voltage differences by

Tuesday, June 19, 2012

Microsoft "Surface"

With its new Surface Tablet, Microsoft didn’t just break the mold. It smashed it into a million little pieces, chucked them all into the furnace and set the temperature to obliterate. There really is no precedent for what Microsoft did this week.

Monday, June 11, 2012

World's first wireless telephone.

Photophone receiver and headset, one half of Bell and Tainter's
optical telecommunication system of 1880

The Photophone, also known as a radiophone, was invented jointly by Alexander Graham Bell and his then-assistant Charles Sumner Tainter on February 19, 1880, at Bell's 1325 'L' Street laboratory in Washington, D.C. Both were later to become full associates in