Biofeedback is a tool that helps individuals visualize how their biological systems work. For example, software can show individuals what their heart is doing and how basic changes in their breathing can influence their heart beat and overall health.
Soft copy means a data or information which can be stored in any kind of digital memory. It is an intangible form of preserving the material. You can see the record but cannot touch it. Monitors or others display screens are used to see the soft copy results.
A paperback (also known as softback or softcover) is a type of book characterized by a thick paper or paperboard cover, and often held together with glue rather than stitches or staples.owever, the first mass-market, pocket-sized, paperback book printed in the US was an edition of Pearl Buck 's The Good Earth, produced by Pocket Books as a proof-of-concept in late 1938, and sold in New York City. It has since become very collectible.