Fundamental Quantities

                  There are 7 fundamental quantities, namely: length, mass, time, temperature, electric current, amount of substance, and luminous intensity.  Length.  In daily life, length is used for measuring distance, thickness of a book, etc. In science length represents the distance between two points, for instance the length...

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Definition of Measurement

Measuring is an important scientific skill.  To measure the length of a table using a book, you compare the length of the table with the length of the book, and the book is used as a unit. Length is one of base quantity. The result of measurement is...

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The Definition of Heat

       What will happen if you touch a cool wall with your hands for five minutes? Your hands will feel cooler and the parts of the wall that you touch will be warmer. The temperature of your hands decreases while the temperature of the wall increases. The heat...

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