New Technology Rechargeable Batteries versus Single Use batteries (non technical article) -versus- ?Rechargeable batteries have been around since the 1960s and have improved considerably since the early days....
The purpose of this ongoing guide is to inform the members of Ebay (and Ebay!) that we have a serious problem on this website. The world's largest cyber supermarket has problems with fakes. While I have...
The main thing to check is that they are direct direct turntables. Direct drive turntables always play at a steady pace making beat matching perfect. Now, when buying a second hand turntable the main Quartz...
Professional High Intensity Discharge (HID) XENON TORCH High Intensity Discharge (HID) is a new type of lighting technology that's primarily different from the conventional halogen bulbs that use a heated...
Alkaline (Zinc Manganese Dioxide)Anode: Zinc Powder Cathode: Manganese dioxide (MnO2) powder Electrolyte: Potassium hydroxide (KOH)First introduced in the early 60’s as an improvement to the existing...
EDs are continuously improving. In 1999 their efficiency surpassed that of conventional incandescent tungsten torch bulbs, and in 2006 Cree demonstrated white light LEDs with a better efficiency than...