ClipArt ETC
Burglar alarms like this one are designed to alert the user to danger. Sensors are connected to a control unit through a low voltage wiring that interacts with a response device.

Burglar Detention Alarm

Burglar alarms like this one are designed to alert the user to danger. Sensors are connected to a control…

Diagram illustrating the formation of phacoliths (shown in solid black). A phacolith is an intrusion of liquid rock formed when magma pushes up from deep within the earth into any cracks or spaces it can find.

Phacoliths

Diagram illustrating the formation of phacoliths (shown in solid black). A phacolith is an intrusion…