PTT108 MATERIAL AND ENERGY BALANCE Chapter 5 Single Phase Systems Madam Noorulnajwa Diyana.
Chapter 5 Soundings. There are four basic types of sounding observations. –(1) Radiosondes An instrument package lifted by a balloon with sensors for.
Noise pollution Sound is a form of energy which is emitted by a vibrating body and on reaching the ear causes the sensation of hearing through nerves.
