Noncontact capacitive sensors work by measuring changes in an electrical property called capacitance. Capacitance describes how two conductive objects with a space between them respond to a voltage difference applied to them. When a voltage is applied to the conductors, an electric field is created between them causing positive and negative charges to collect on each object (Fig. 1).
You are working on a word processing document, and you need access to an item you just copied to the clipboard. You wonder if there is a way to get to the clipboard quickly. The clipboard is a storage area within an operating system for items you copy or cut from a document, website or other computer application. Accessing the clipboard on your computer is not tricky. In Windows XP, the clipboard can be accessed through the My Computer selection.
Tagboard Defined. Tagboard is a lightweight cardboard that comes in many sizes, styles and colors. It is thinner than true poster board and is made from virgin wood pulp. It is not acid-free, so it should not be used for projects that involve keepsakes or photos. It has a smooth surface and can be written on easily.