Used & Refurbished iPads For Under $300

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Buying a used or refurbished iPad makes a lot of sense. iPads are relatively sturdy devices and have few moving parts. If you can deal with a few scuffs on the case, you expect to save about $200-$300 when buying a used iPad. However, we recommend purchasing your iPad from a seller that has a good track record, and offers …

The Best Ultraviolet LED Flashlights Of 2015

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Ultraviolet light is a wavelength shorter than that of visible light, but longer than X-rays, in the range 10 nanometers to 400 nanometers. LEDs that emit ultraviolet light were introduced in 2006, and there are now ultraviolet LED flashlights available. These flashlights are most often used to detect fraudulent documents, see watermarks, read invisible ink or investigate crime scenes. They …

The Best Flashlights For Retaining Night Vision

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Aviators, astronomers, truck drivers, campers and anyone wanting to retain their night vision can benefit from LED flashlights with red or green light options. Which is best, green or red light? Well,┬áit’s the total brightness of the light that has the most significant effect on night vision retention, so you’ll want a light that allows you to easily adjust brightness. …