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Devices
Laptops and hand held devices
Lithium batteries back up power stations
Nov 4th
Batteries are critical to the development of portable (electrical) devices. And lithium-ion batteries have been up there in driving the portability revolution. Rechargeable lithium-ion batteries hold more charge in a lighter package (as lithium is the lightest metal – hydrogen is not a metal) and have dramatically improved the performance of phones to small electric aircraft. But they do have one drawback – they charge and discharge too rapidly (and the resultant heat can damage the battery or cause a fire). So they need constant monitoring and control by a built-in electronic circuit to avoid this problem.
Construction and operationThe basic More >
When was the battery invented?
Mar 3rd
One of the early attractions that gained public attention was an electrically illuminated bridge over the river Seine during the 1900 World Fair in Paris.
The use of electricity may go back much further. While constructing a new railway in 1936 near Baghdad, workers uncovered what appeared to be a prehistoric battery. The discovery was known as the Parthian Battery and was believed to be 2000 years old, dating back to the Parthian period.
The battery consisted of a clay jar filled with a vinegar solution. An iron rod surrounded by a copper cylinder penetrated into the liquid and produced 1.1 to More >
iPad by Apple
Feb 2nd
Evidence was discovered that Apple was interested in the name “iSlate, prior to settling on “iPad”.
A search in the Canadian trademark database reveals that Apple’s dummy corporation Slate Computing, LLC applied for a trademark for “iPad” under the categories of handheld mobile digital electronic devices with a broad range of applications. This application was filed in July 2009 — much more recently than the original iSlate trademarks which date back to 2006-2007. Slate Computing, LLC did not apply for a similar trademark in the U.S. due to the fact that Fujitsu appears to control the U.S. trademark as it relates More >