THE WORLD A TECHNOLOGY VILLAGE

THE WORLD A TECHNOLOGY VILLAGE

Usefulness of technology.

Technology is the use of scientific knowledge for practical purpose or application of fulfilling man's need either in the industry or in our everyday lives. Whenever we use our scientific knowledge to achieve some specific purpose, we are using technology. The term ‘Technology” is wide, and everyone has their way of understanding its meaning. We use technology to accomplish various tasks in our daily lives, it is also used to simplify our daily lives. We use technology to extend our abilities in doing things.

Technology is used to solve scientific problems and discoveries. Technology is different from science because Science discovers the theory while technology carries out the application of the discovery.

Useful technology found in homes

• Television can be used to view audio visual information and it comes in different size and brands.

•Radio is used for audio transmission and receiving of information and it comes also in different sizes and designs.

•CD/DVD player is used for playing prerecorded audio or audio visual information from (CD) compact disc and it comes on different sizes and designs.

Technology products found in schools are magnetic board, water dispenser, computers, sound system, bench vices, air conditioner, wall clock, bells etc.

Methods of joining metals

Methods of joining metals 

Metal joining is the act or process of sticking two metals together either

 permanently or temporarily with the use of fasteners.

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   There are four methods of joining metals together, these are:

1.  Soldering

2. Welding

3. Riveting

4. Mechanical fastener

1.  Soldering: this is the method or act of melting a solder (alloy) on

    the joint of the two metal. There are two types of soldering

    namely:

     1.Soft soldering

     2.Hard soldering

    solder is an alloy of lead and tin

2. Welding: this is a fabricating process that is used to join metals

    together by melting the work pieces and adding a filler material

    to form a pool of molten material that cools to become a strong

    joint.

    There are two types of welding namely ARC welding and GAS

    welding

3. Riveting: this is a permanent mechanical fastener which when

    installed can not be removed except destroyed. The opposite end

    of the fastener is called BUCK TAIL while the original head is

    called RR  FACTORY HEAD.