The Light gate is a digital switch-type sensor most commonly used in timing experiments. The Light Gate has an infrared transmitter and receiver that will detect an object passing through the ‘gate’. They can be used singly or in pairs for time, speed , velocity, acceleration and event monitoring. Lighting or illumination is the deliberate use of light to achieve practical or aesthetic effects. Lighting includes the use of both artificial light sources like lamps and light fixtures, as well as natural illumination by capturing daylight. The lights make your home and surroundings visible even after dark. When positioned properly, gate lights make architectural features of the home pop out. Lights pointed at your favorite plants make the most of your landscaping at all times of night and day.