How to improve your Brain Fitness

Brain is called the CPU of human body. It works for the whole day. It works even while we are sleeping. But stress, frustration, load of work, negative thinking, smoking, drinking, unbalanced diet individually or in combined form misbalances the brain and its working.

But it is said that brain is like parachute. It only functions when it is open. So to open up your mind just try these ideas given below:

1. Meditation : It improves concentration and helps in focusing. It strengthens the mind. Mind comes under control and effectively guide the physical body to execute all its projects efficiently.

2. Mind Games and Puzzles : Many games like sudoku, crosswords and quiz help in increasing alertness, focus and concentration. They are benefit in remembering things easily and mind is then able to think faster.

3. Exercise and Dance : When you will be physically fit then you will be automatically mentally fit. According to the studies, dance is the only exercise which affects mind as it integrates several brain functions at once.

4. Sleep : If you want your mind to work properly, then sleep. Because giving your mind rest for sometime will help in recollecting energy for the next day. So sleep at least 6-8 hours per day. But remember excessive sleeping can be harmful.

5. Balanced Diet : Eat healthy to keep your brain healthy. Avoid junk, oily, packed food materials, smoking and use of liquor as mental health is always related to physical health. Eat nuts, fruits, grains, pulses and use milk products in order to get mental fitness.

6. Positive Thinking : Think positive. To achieve this share your problems, sorrows and happiness with your dear ones. And remember nothing is possible.

7. Laugh : The best cure of all diseases is to laugh. So laugh as much as you can and make others laugh too.

8. Learn New Skills and spend time for Hobby : Try to learn whatever you want to. Spend some time for your hobby whether it's dancing, singing, reading, painting, traveling or something else.

Centre of Gravity - Elementary Science

Every body is made up of a large number of particles.

In a rigid body the particles are held together in a fixed position relevant to one another.

Each particle is attracted towards the center of the earth with a force equal to its weight.

Let F1, F2, F3, F4, F5, F6 be the forces acting on the particle P, Q, R, S, T, U respectively.

The resultant of all these forces is equal to the vector sum given by F=F1+F2+F3+F4+F5+F6.

The line showing the direction of this resultant force is called the line of action.

This total force or weight of the body appears to act through the fixed point G irrespective of the position or orientation of the body, this point G is called center of gravity of the body (G) the position of the centre of gravity of a body may be falling inside or outside the material of the body. 

Center of gravity of a body is defined as a point of application of the resultant force due to the earth`s attraction on it. Center of gravity of regular bodies.

Let us consider some regular bodies. Take uniform meter scale A, B and note its mid point G. if the scale is suspended at point P or Q it dose not remain . if the scale is suspended at the mid point G its remain horizontal and stable. This geometric mid point is the center of gravity G of the scale.

For a body which has uniform density and regular shape the center of gravity G coincides with the geometric center.

Feeding and Digestion in Amoeba - Elementary Science

Amoeba is a single celled microscopic organisms mostly found in pond water. It has a cell membrane rounded nucleus and a small bubble like vacuums in its plasma. It changes its shape and pollution constantly. It projects out finger like projections called pseudopodia which is used to trap other microscopic organisms or other food particles. The food is trapped and gradually the food is digested and absorbed. These absorbed substances are used for growth, maintenance and multiplication of the organisms.