Dear friends, we all are aware of the gravitational force and in one of my previous articles, we have discussed the force of gravitation. Today we learn about the various properties or characteristics of gravitational force. Lets us discuss them one by one:
The gravitational force between two objects forms an action and reaction pair.
It is always attractive. The gravitational force is never repulsive
It is a central force that is gravitational force acts along the line joining the centers of the two objects.
It is a conservative force that is it depends upon initial and final positions, not on the path.
It is a long range force.
It is independent of the presence or absence of other objects in the neighborhood.
It is independent of the nature of the intervening medium between the two objects.
It does not depend upon the nature and the size of the two objects till their masses remains the same and the distance between their centres remains fixed.
Newton’s third law is a very important law and very common law. Consider two objects 1 and 2 moving along the same straight line in an isolated system. Let the two bodies mutually collide so that they act or react with each other. Due to collision, the velocity of the two bodies change and hence their momenta also change.
Today I want to share my personal bad
experience with you. You must have heard that copper is good for health and
many of us drink water in copper bottle or glass. Many of us drink water in
copper bottle or glass by storing water through out night and then drink water
in morning in empty stomach.
I have suffered from fever few days back and
also stomach was upset. One day before going for office in morning, I thought
of mixing oral rehydration salts (ORS) available commonly in market chemist
shop. The ORS is used to replace lost fluid in body. It has sodium, potassium
glucose etc. So it is very good in case of dehydration.
Thus I have mixed ORS with water placed in copper bottle. Then I went for office and drank water regularly. At about 3 pm, I again drank water placed in copper bottle but it was quite bitter at that time. Therefore I left it. But after some time I have constant bitter taste in my mouth. When I reached home, I was feeling nausea and stomach pain. Then by chance I saw the color of water. To my surprise, the color of water was blue.
Dear Friends, Our earth is going through a very vital phase. We are facing shortage of water due to water crisis in many parts of world. But there are many persons among us who waste water like any thing. They do not want to listen to any one. It is our responsibility to tell them that water is necessity and we have to save water for us and for others. There may be many methods to save water, to recycle it.
I want to share one of the methods that I have adopted personally to recycle water. Most of us have flower pots in our house where we take care of our plants like our kids. We give them food, water, sun light so that they can grow.
We also have ROs filters that is reverse osmosis filters installed in our homes also. When we fill water in the tank of ROs then we must have seen that water gets filtered and water also comes through the side pipe. It was getting wasted. This water was going into sink and getting waste. One day I thought to use this water and placed an empty jug under it. When the jug got filled with water, I have used this water to water the plants in flower pots. This way I have reused the water getting waste and did my little bit to save water.
Dear Friends, You may also suggest little bit methods to save water or reuse or recycle water for our Dearest Earth. Please drop your suggestions in comment boox.
Hello friends, last time we have discussed about electric flux and its units. Similarly in magnetism, there is concept of magnetic flux. Have you imagined, why a magnet able to attract an iron piece place near by it but if the iron piece is placed somewhat far away from magnet then magnet is not able to attract it.
The term renewable energy is very popular now a days. Due to depletion of other resources of energy, there is need of other sources of energy. Let us first discuss the meaning of renewable. As the name suggests the term Renewable consists of two terms. One is “Renew” means “which can be used again and again” and second term is “able”. Thus renewable means which is able to be used again and again. Continue reading “Meaning of Renewable energy and 6 major types of renewable energy”
Last time, we have discussed about the origin of name of x rays that is why x rays are known as x rays.
Today, we will discuss how x rays are produced? It is proved that whenever fast moving electrons strike a target material of high atomic number and high melting point x rays are produced. But what happen after the collision of electrons? Why and how x rays are produced then? Let us discuss it: