Courtesy of Mr. Ayman Odawa :)
Without
measurement, the world would be a mess. Bridges would end in the middle of
rivers if engineers didn’t take measurements before building. You would be late
for school constantly without a clock to measure time. Your clothes wouldn’t
fit if they didn’t match the measurements of your body. Without a speedometer, a driver couldn’t stay
at a safe speed. Without their built-in thermometers, refrigerators couldn’t
keep food cold enough to stop the growth of harmful bacteria.
People
have always needed measurement, but long ago there were no standards or
systems. Instead, they used the length or width of their fingers, arms, and
feet as units of measurement. The problem, of course, was that everyone’s
fingers, arms, and feet were not the same size. So over time, most governments
developed standard systems of measurement. That means weights and measures that
everyone in a particular place could agree upon.
Today,
there are two main systems of standardized measurement in the world: the metric
system and the English system.
Measurements and Instrumentation subject provides the basic knowledge of the concept of measurement systems and introduces some basic instruments used in the measurement of electrical quantities such as voltage, frequency and period. The course also describes some industrial applications of sensors, such as the measurement of temperature, as well as the detection of different types of objects.
