Astronomical distances, especially the distances between planets and stars, are so huge that they are measured in miles and kilometers. Expressing these in units can be extremely difficult, so they can be measured in AU (Astronomical Units), light years, parsecs, etc. The speed of light is constant throughout the universe and it is known for […]
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Physical and Fundamental quantity A quantity that can be measured is called a physical quantity. Fundamental quantities are those which cannot be expressed or measured in terms of other physical quantities. Scalar and Vector quantity Physical quantities which have magnitude only and no direction are called scalar quantity. Physical quantities that have magnitude and direction
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Physical and Fundamental quantity A quantity that can be measured is called a physical quantity. Fundamental quantities are those which cannot be expressed or measured in terms of other physical quantities. Scalar and Vector quantity Physical quantities which have magnitude only and no direction are called scalar quantity. Physical quantities that have magnitude and direction
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