TECHNOLOGY

Aims In studying this chapter you should aim to understand the basic concepts of electric charge and field and their connections. To test whether you have understood the concepts see if you can describe and explain the applications in your own words. Electrostatics: It is the basis of industrial processes such as electrostatic spray painting, and xerography, and of the unintentional build-up of electrostatic charge which can trigger explosions and fires in, for example, grain silos and operating theatres. The electrostatic force: It is one variety of the general electromagnetic force. It is the basic interaction between charged bodies and it is called electrostatic. Like charges repel. Unlike charges attract . Coulomb's law A law stating that like charges repel and opposite charges attract, with a force proportional to the product of the charges and inversely proportional to the square of the distance between them.

Drilling   It is a cutting process a drill bit is used to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, and a multi-point cutting tool. The drill bit is pressed against the workpiece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge of the workpiece, thus cutting off chips (swarf) from the hole as it is drilled. Reaming Reaming is widening a hole with a special tool. A reamer is a type of rotary cutting tool used in metalworking. reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides. Types of the reamer. 1.Straight reamer. A straight reamer is used to make only a minor enlargement to a hole. The entry end of the reamer will have a slight taper, the length of which will depend on its type. 2.Hand reamer: - A hand reamer has a longer taper or lead in at the fr...

Sometimes YouTube audios are not audible.we no need to buy a speaker set to amplify the audio. follow the below steps to amplify YouTube audio without any device or investment. STEPS: Go to YouTube & search for the video. Click on that video and copy the URL of the YouTube video........ (see screenshot below) Go to VLC media player if you don't have download  from  http://www.videolan.org/vlc/index.html In VLC click 'MEDIA' at the top left corner.....(see screenshot below) After clicking MEDIA a drop box will appear in that click "OPEN NETWORK STREAM".... (see screenshot below) THEN paste the YouTube URL in the "NETWORK" and click "PLAY".... (see screenshot below) The video will be playing on the VLC at the selected quality.Scroll up the mouse to increase the volume to 200%. (see screenshot below) If you want to dowload the youtube video using VLC wait for the update.