Add caption A photoelectric sensor, or photo eye, is an equipment used to discover the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are largely used in industrial ma...
A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation (infrared, for instance), and looks for ch...
Saat kulihat bintang nan jauh di sana, aku seperti melihat diriku yang sesungguhnya. Alangka megah keagungan Tuhan. ...
