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Physics is derived from the Greek word physis, which means “nature.” In its most basic form, physics is the study of everything that surrounds us. Physics is one of humanity’s most ancient (unknowing) topics. Astronomy is thought to be the earliest branch of physics.
Physicists aim to condense ordinary events into mathematical formulas. Other physicists and engineers utilise these formulas to predict the outcomes of their investigations. Isaac Newton (1642–1727), for example, discovered the rules that govern the motion of bodies, which we currently use to create rockets that travel to the moon and other planets.
The phrase “MEASUREMENT” refers to the process of determining the size or magnitude of something. By comparing the unknown quantity to a standard quantity of the same sort, referred to as a measurement unit. “Comparison of an unknown quantity with a known quantity of the same kind” is another definition of measurement. The following components make up an object’s measurement:
(1) the unit of measurement.
(2) the number of units that the object is capable of measuring.
Like any other scientific discipline, measurement is an important aspect of physics. Measurement is an essential aspect of the human race; without it, no trade or statistics would exist. The concept of measurement can be seen in small children who have never heard about math. Kids try to compare their heights, candy sizes, doll sizes, and toy collections. All of this occurs even before they have a basic understanding of mathematics. Even before we begin to learn math, it is ingrained in our minds. Math is a fantastic way to learn about anything, which is why we see computers involved in practically everything because they excel at math.
SCALES
To measure, scales are employed. A basic ruler or tape can be used to measure minor distances, your height, and probably a lot more. We have particular scales for certain quantities in physics, which we will see shortly.
UNITS OF MEASUREMENTS –
METRIC
The metric system uses the metre, litre, and gram as base units of length (distance), capacity (volume), and mass (mass).
We employ units derived from metric units to measure smaller and greater quantities.
US STANDARD UNITS
The metric system has not been adopted as the official weights and measures system in the United States, Liberia, or Myanmar. Measurements are taken in US customary units in all 50 states.
LENGTH, MASS AND TIME
The metre, kilogramme, and second are the three standard units in the present system of units. The MKS-system, often known as the metric system, is made up of these three units.
A metre is a unit of length that is currently defined as the distance travelled by light in 1/299,792,458 seconds.
A kilogramme is a mass measurement unit. Previously, it was specified as a precise amount of water (e.g., 1 litre or a 10 cm3 cube), but now it is defined as a prototype platinum-iridium cylinder.
- Metre- The unit of measurement for length is metres. The alphabet represents the unit (m). The base unit is “m,” and we use “Deca,” “Hecto,” and “Kilo” to measure large units by multiplying by 10, and “deci,” “centi,” and “millie” to measure smaller lengths by dividing by 10. To measure length, we can use a basic ruler. A pencil, for example, would be 10 cm long if measured using a ruler.
- Kilogram- A kilogram is a unit of mass that is symbolised by the letter K. (kg). It informs us of the weight or lightness of an object. To measure smaller and larger units, we can multiply and divide the base units. We use gram, kilogram, and milligrams in general for our convenience. The use of other units is minimal. We use a weighing scale to determine the weight of items. In supermarkets, a weighing scale is used to weigh groceries
- Second- Seconds are the unit of measurement for time. Seconds are represented by the symbol (s). The ongoing series of events is referred to as time. It is used to determine the length of time between events. It also assists us in determining the start and end times of activities. Seconds are the fundamental unit of time.
Other metric systems of measurements are Area, Volume, Time, Speed, Acceleration, Force, Temperature, Direction, Time and Date, Mass, etc.
VARIABLE MEASUREMENTS
Variables (for variable measurements) are things that can be measured with an instrument, a gadget, or a computer. The type of analytical procedures that can be performed on the data, as well as the conclusions that can be taken from the data, are heavily influenced by the scale of the variable being measured. The nominal, ordinal, interval, and ratio scales are the four types of measurement scales.
CONCLUSION
Finally, performance measurement is critical in generating public value through good strategic management. Developing and refining performance measuring systems necessitates consideration of philosophical, normative, scientific, and cognitive challenges. Measurements are crucial for comparing things since they serve as the foundation for comparing objects to one another. Without having to watch the hours pass by, measurements allow us to recognise three hours and see how it differs from five hours.
