Post Views: 699 RADIOACTIVITY Meaning of Radioactivity Radioactivity is the spontaneous disintegration or breaking down of the nucleus of an atom which makes it give out or emit radiation. Any element that disintegrates spontaneously and release rays us called a radioactive element Discovery of Radioactivity Radioactivity was discovered by a French physicist called Henri …
Post Views: 552 ELECTRICAL ENERGY INTRODUCTION Electricity is the flow of electric current. Electric Current is the continuous flow of charges (electrons). It is also the rate of flow of charges. Electricity has several applications in the modern day society. Electrical energy is needed by industries, hospitals, offices, homes, schools, research institutes and so on. …
DRAWING INSTRUMENTS AND MATERIALS
Technical drawing is a universal language used for communication among technological professionals. The professionals that use technical drawing are Architects, Engineers, surveyors, technicians, technologists, draughtsman, designers etc.
Professionals and students of technical drawing need the required instruments and materials to make good drawings because technical drawing involves the use of symbols, lines, measurements, etc. to represent ideas, knowledge, imagination (design) and information to others.
PROPERTIES OF MATERIAL
Materials can be described as substances that produce other things.
The properties of the following materials shall be considered:
Wood
Metals\ceramics and glass
Rubber
Plastics
BUILDING
A building is a fixed structure meant for human occupancy and uses. It provides shelter for man and his property.
CLASSIFICATION OF BUILDING
Buildings are classified according to the following.
Occupancy and uses
The numbers of floors they have
The types of materials used and its method of construction
Occupancy and uses: It includes the following:
WORKSHOP
A workshop is a place where engineering activities are carried out.
WORKSHOP SAFETY RULES AND REGULATIONS
WORKSHOP ACCIDENT
Workshop accident is an unforeseen/unexpected occurrence that way cause injury or pain on the personnel, wastage of materials and damage of tools and equipment.
SAFETY GUIDELINESS
Safety is the act of freedom from injury, sickness or accident, or damage or death.
Safety guidelines are general rules or instructions written to give advice and direct people behaviour.
SAFETY GUIDELINES FOR PEDESTRIANS
Pedestrians must walk on the left hand side facing oncoming vehicle.
Be predictable. Stay away from restricted areas of the road or freeways.
Pedestrian should dress in light colours and carry flash light while walking in the night.
Pay attention and watch out. Do not be in a hurry.
Do not take drugs and alcohol before walking in the street.
Pedestrian should use the zebra crossing the road.
Technology Literacy
This is the ability to use, manage, access and understand technology. When this skills and knowledge is acquired, it can be used in communication and solving problems.
Technology literacy helps man to use information communication technology (ICT) to solve diverse problem such as online messages, online banking, online registration etc.
TECHNOLOGY AND SOCIETY
The level of technology in a society determines whether the society is developed or underdeveloped.
Some of the technology that determine the level of development of a society are:
Good road network for easy mobility
Constant power supply to residential and industrial premises.
Constant supply of drinkable water.
The level of production which determines whether the society depends on facilities for recreation and relaxation.
LIFE APPLICATION OF TECHNOLOGY
Technology has improved the standard of living and solved human problems in the following ways.
Highways with traffic light to control the flow of traffic
Good road network for easy transportation
Internet facilities for communicating and sharing ideas.
Modern houses with facilities that make life easier
Manufacturing machine for mass and accurate production