## How to measure Density of a substances

Hi viewers: Today we will discuss about another physical quantity and that is density of a substances and how to measure the density of a substance.  This physical quantity takes derived units, which we will discuss in the following  DENSITY What is density? The density of a substance (solid, liquid and gas) is defined as mass per unit volume at a particular temperature. OR in other words we can say The quantity of matter contained in a given volume of a substance at a particular temperature is called its density   Density = Mass / Volume Eg.  Density of water   In CGS system, Density of water is 1 gm/cc at 4 °C In FPS system, Density of water is 62.5 pound/cft In MKS system, Density of water is 1000 kg/cubic metre   Units of density In CGS system, it is gm/cc In FPS system, it is pound/cft In MKS system, it is kg/cubic metre   Experiment 1  (Note:  All experiments should be written in passive voice and past tense) Objective:  To measure the density of an irregular solid that does...

## How to measure a Volume of a substance

Hi Viewers: Today we discuss about the volume of a substance.  This is a physical quantity it takes the derived units. It is very important for a person to know what is volume, because in our day to day life we often come across with this term.  So it is very important to know How to measure a Volume of a substance. Volume What is volume? The space occupied by a substance (solid, liquid and gas).   Units of Volume In CGS system, it is cc In FPS system, it is cft In MKS system, it is cubic metre   What is cc? cc means cubic centimeter If a length, breadth and height of a cube is 1 cm each, then the volume of the cube is taken as the unit of volume in CGS system.  It is called one cubic centimeter or 1 cc or 1 cm3.   Similarly, If a length, breadth and height of a cube is 1 foot each, then the volume of the cube is taken as the unit of volume...

## How to measure Time

Hi viewers: Today we will discuss about the physical quantity - TIME. It the most important physical quantity because we are consciously, sub-consciously even un-consciously we are calculating time.  In this blog we will try to give you a rough idea about time Time Earth possesses two kinds of motions, one of them is rotational motion. The rotational motion from west to east on the geographical axis is called the diurnal motion, which causes day and night. When the sun attains the highest position in the celestial sphere, it is said to be on the meridian. The interval of time between any two successive passage of the sun across the meridian is called an apparent solar day. But for the same reasons, on measuring the lengths of the apparent solar day for some consecutive days, we see it is not constant but it varies slowly. The average taken over a year is known as a mean solar day.   A mean solar day has 24 hours 1/24 th part of it is...

## How Length of a regular surface is measured

Hi viewers: Today we discuss How Length of a regular surface is measured   What is length? Length is the distance between any two points or places.  In fact, it is the width, breadth, height, depth, thickness, radius, circumference etc of any object that we measure is the length.   What is a centimeter? Centimeter is the unit of the length in C.G.S. System.  At O°C the distance between two lines of a platinum – iridium bar kept at the international bureau of weights and measures at Paris in France is taken as a meter.  The one hundredth part of a meter is a centimeter.   Foot is the unit of length in F.P.S.  At 32°F  the distance between two transverse line on a bronze bar kept at the British Exchequer at London is taken as a yard.  One third of a yard is called a foot. 1 mile = 1760 yards,  1 yard =  3 feet,  1 foot = 12 inches     The units of Length In CGS system:  cm In FPS system:  foot In...