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Heat and temperature What happens if someone asks you to differentiate between heat and temperature. I know both senses same to most of the people. And in reality many one from you will declare these two words same. This is far away from truth. Heat and temperature are two different words which have two different meanings. Today we at eStudyan will discuss this topic. So, let's begin! Temperature The measurement of hotness or coldness of a body is termed as Temperature. There is so many scales on which we measures temperature such as kelvin scale , Celsius scale , Rankin scale , Fahrenheit scale etc. But its SI unit is kelvin scale. Although most commonly we uses Celsius or Fahrenheit scale but international system of units have given priority to kelvin temperature scale.  There is a very simple way of relating two units. One simple thing you have to know is the boiling and melting/freezing point of water at those particular scales. Now understand the way.  Suppose you want to rela

In today's world it's impossible to live without phones , TVs and other electronic gadgets. We need electricity to operate these gadgets. But have you ever thought how electricity reaches  to our house. Well today, we at eStudyan decodes this topic for you. The electricity supply board of our city provides two wire in our area and tied them to electric poles of our area. In these two wires one is live wire and other is neutral wire. These two wires reaches our house 🏠. Now an electric meter is fitted in our home by the electric supply board. This meter measures the amount of unit of electricity consumed by us in a given month. And in accordance with that they provide us suitable electric bill to us.  These two wires now gets connected to two separate fuses , one before getting into electric meter and other before reaching to the consumer's circuit.  We also connected fuse in our room circuit for safety. Now after passing from electric meter these two wire are provided to c

B allet dance, one of the most entertaining form of dance that we like to watch. If you had ever watched ballet , you must had watched the performer to rotate rapidly at one place. But have you ever thought how she do that easily. What is the technique behind this, that a normal person don't know and fails to perform this act.So let's explore this topic today. But before that we have to be clear about some basic concepts of motion of a body. So let's begin that first step by step:- 1.Momentum as you all know is the product of the mass of an object and it's velocity. This definition of momentum is limited to the linear motion of the object. But when the  object is rotating about an axis, it is undergoing rotational motion.                   It should be clear that rotational analogue of momentum is called angular momentum. We should now learn about the conservation of momentum which states that:- "Momentum neither be created nor be destroyed". So from the above

Nature shows many interesting and beautiful phenomena to us and we always curious to explore about those phenomenas. One such phenomenon is the formation of Rainbow in the sky. If you  want to explore about this topic just read this full article.             Rainbow :-.    It is the arch of seven colours which forms in the sky when it rains and sun is ⛅ in the sky at same time. How does rainbow forms?               We can see rainbow by standing in front of rain with our back in front of the sun. Now, before tuning to the formation of rainbow we should be clear about dispersion of light. So let's first learn about it.                   Dispersion of light The splitting of white light into seven colours i.e. Spectrum is called dispersion of light. This phenomenon can easily be observed by passing white light through a glass prism. Dispersion of light through glass prism The above picture shows the dispersion of white light through glass prism. The seven colours in which

 Our sky is the most prestigious sky in the solar system because it is the only sky in this solar system which has this much differences in the composition of different type of gases in its atmosphere. Why is our sky blue? But have you ever wondered! why it is blue ? not black or any other colour. Well there is a interesting physics behind it. Before going on that concept let me tell you some history of it.( For main explanation just scroll down👇). In ancient times many Greek physicist wondered about the blue colour of sky. One of them gave his thesis that God is watching from the sky, due to his blue eyes the sky looks blue. But as the science grow his thesis was only thought to be mythological thought which not get much attention of the modern scientists. Much more investigation s happen and another theory came which says that sky colour is due to the blue colour of ocean. But this also gets rejected by the modern scientists because why does sky appears blue in deserts.