Tuesday 24 May 2011

Binocular View

We have two eyes to see ,it is enough only one eye to see things,then why nature has given us two eyes.Objects are three dimensional and they are length,breath and height or thickness or depth.If we have only one eye then we can see the length and breath of the objects only and  we will not be able to realize the thickness of the object .Since we are provided with  two eyes the same image is viewed by both eyes and the similar images received by both eyes are super imposed in brain and we realize  the thickness of the object.Also the one in front and the other in back is also viewed correctly because of our binocular vision. My explanation so for can be experimentally proved to you that if you close one of your eye by your hand and view the object in front of you by one of your eye only then you will not be able to feel the thickness of that particular object and if you remove your hand from closure of one of your eye and now if you view the same object by both of your eyes then the difference between viewing by one eye and two eyes and the importance of binocular view can be felt.

Friday 13 May 2011

How Rainbow Is Formed

The Rainbow is formed on sky when three conditions are fulfilled, they are; it should be either morning or evening,it should be raining in the drizzling form and at the same time the sun shine should be there.When Sun light is allowed to pass through prism it gets scattered to its constituent seven colors so to say violet,indigo blue, green, yellow,orange,and red.This is due to diffraction of light since light gets scattered when it pass through air medium to glass medium and again to air medium.Sun light suffers same changes that when rain drizzles each rain drop act as prism and it scatters sun light to its constituent seven colors and  vibgyor is formed and it result as Rainbow over the sky.The Rainbow disappears when rain stops or sunshine fade away.  

Monday 9 May 2011

Human Spinal Cord - Salient Features


Animals are four legged while man is two legged,this is because of the spinal  cord of man is  that it is capable of holding man vertically while the spinal cord of animals can hold them only horizontally.   The front two legs that animals have merely help them to walk and run in addition to their hind legs,and it is a mere waste to use four legs for walking and running, hence nature through evolution modified the front two legs of animals as hands for man.The hands make man to stand atop among other animals apart from his sixth sense.Everything above explained  is due to the strong back bone that man posses ,therefore have strong back bone to face problems in life that you may come across.To add further the front two legs of animals are modified as wings for birds to fly ,through evolution.

Saturday 7 May 2011

Diabetism-Causes.

To inform first diabetic is not a disease, it is not caused by any germs or viruses or bacteria.It is purely an org anal disorder of our body . That organ is pancreas situated in the stomach region and it secretes a digestive enzyme called insulin.The role of insulin is, it is the key that transforms glucose present in our blood into energy.If sufficient insulin is not there  then the process of transformation of glucose into energy will be affected ,the person who is diabetic will often become tired ,.the after effect is since the glucose is not transformed to energy the glucose level in the blood for diabetic patient gets increased and it gets reflected in the blood sugar level and in urine also.Mainly food is consumed for the energy requirement of our body,due to diabetic if glucose is not transformed to energy although the diabetic patient took enough food the brain will  mistakenly assume that enough glucose is not in blood and it will send hungry feeling very frequently and that is why diabetic patient feel hungry always although they had taken enough food.

Wednesday 4 May 2011

How the blood pressure of our body is measured by doctors.

When measuring the blood pressure the doctor first envelope our hand hind arm by the rubber cloth material,then pumps the air to the apparatus and then places the round end of the stethoscope in between the rubber envelope and our hand and then places the other end of the stethoscope in to his ears.Our heart beat is felt by the doctor through the stethoscope, now when the air is pumped to the rubber envelope it creates counter pressure on the hand and stops the flow of blood,the pressure given to the apparatus is systole pressure of the heart.at this time the doctor will not feel the pulse,since the flow of blood through the  arm is prevented by the apparatus.Now the doctor releases the air pumped slowly which allows the flow of blood back and at this time the pulse signal is received by the doctor and this marks the diastole pressure of heart.In short what amount of pressure is necessary to prevent the flow of blood is systole pressure which is 120mm of mercury and what amount of pressure is to be  released to allow the flow of blood is diastole pressure and that is 80 mm of mercury for  normal man.

Sunday 1 May 2011

SPEED

Running is faster than walking,cycling is faster than running.Going in a motor bike is still faster.Like this can we go on increase the speed of travel indefinitely!Or is there any limit for speed  one can attain.Yes there is a limit for speed that one can attain. It is the speed of light.The speed of light is approximately three lakhs of kilometer per second. imagine the speed of light,the light will travel to about three lakh kilometers the moment it started.

Oil,Ghee and Dalda

Oils are nature given unsaturated vegetable fat,Ghee is saturated animal fat and Dalda is artificially saturated hydrogenated vegetable oils.When compared with oil and ghee dalda is harmful to health especially to heart.Therefore it is advisable to avoid dalda in food regularly  at the same time once in a while if dalda is used no problem.