To get started, PoE camera systems just require the following: PoE cameras, a network PoE switch, Ethernet connections (e.g., Cat 5 or Cat 6), and a PoE NVR. In analog camera systems, the DVR encodes and prepares the video for viewing once the cameras send out the footage. The reverse is true of IP cameras. […]
The Science of Fashion: The Operation of UV Nail Lamps
Imagine this: As the beautician paints your nails a gorgeous shade of summer pink, you’re seated at your favorite manicure salon, flipping through a magazine. Once the polish is on, they ask you to hold your palm up to a blueish light-emitting bulb. Your nails are shiny and dry a few minutes later. Isn’t it […]