Physics

These are fixed and unchanging parameters with which instruments are compared for calibration and marking off. This makes it possible for two scientists to have the same result for quantity measurement using different instrument. (a)MEASUREMENT OF  LENGTH   Length is given as length of light wave emitted from the gas Krypton – 86 in a discharge tube. One meter is 1650763.73 wavelength of this light. It means measurement of distance is in meter. Examples are; Distance Example Instrument for measurement Large Playground Tapes Shorter Reading table Meter rule Smaller Diameter of a rod Vernier Caliper Micro Diameter of a wire or Thickness of a paper Micrometer guage (b)MEASUREMENT OF TIME The idea of time involves all events that happen in nature. In the laboratory, time is measured by stop watch or a stop clock. Som...

WHAT IS PHYSICS? Physics is a physical science that deals with the study of matter and energy. It is also the branch of science concerned with the study of properties and interactions of space, time, matter and energy. WHY STUDY PHYSICS (i)                  Analytical skill: Studying Physics will enhance your ability to think clearly, to pay attention to detail and to construct logical reasoned arguments. (ii)                To be scientifically literate. (iii)              Problem solving skill: It gives the ability to solve practical problems.  BRANCHES OF PHYSICS (i)                  Mechanics: Study of the force which are acting on matter as well as the motion. (ii)  ...

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