Erase refers to the ability to remove something from a certain place. Once it is erased, it is gone from existence. Delete refers to removing files from one place, but it is still there in another place.

Both the Kindle and Nook started out as E-book readers. The Amazon Kindle is a series of e-book readers designed and marketed by Amazon.com. The Nook is another series of e-book readers, and a major competitor...

The word ‘waterproof’ refers to a product’s ability to repel water from it. For example a bag that is waterproof it would not allow water to seep into the bag, keeping the contents of the bag water free. Water...

The condenser microphone is a type of microphone that runs on a capacitor. A capacitor is an electronic device that stores energy in the form of an electrostatic field. A capacitor was originally called a...

Cell is an electrochemical cell that derives electrical energy from spontaneous redox reaction inside the cell. A battery is basically nothing but a stack or pile of electrochemical or galvanic cells.