Learn more about the history of OrbitÂ® chewing gum and the introduction of each of the OrbitÂ® gum flavors and OrbitÂ® gum facts. 1  1944 The history of OrbitÂ® Gum dates back to World War II. 2  Since they were no longer available on the civilian market, Wrigley began production of a new gum called OrbitÂ®.
Passive POE usually refers to any device using POE to power that is not 802.3af/at. This includes things like cameras and radio antennas that run on 24V POE. Passive POE does not do a hand shake so it is extremely important to know what POE voltage your device requires before plugging in the CAT5 cable and powering it up. If you connect the wrong voltage you can easily burn up your device.
A passive-active cell is the concentration cell series where metals rely on an ultra-bonded passive film (typically an oxide) for protection against corrosion. Mainly, salts that accumulate on the metal substrate will have the film broken with water. In turn, the active metal that is underneath the existing film will be open to corrosion.