Peltier Effect
In 1834, a French scientist Peltier, found an effect that was the converse of the Seebeck effect..
Pascal's law
Blaise Pascal, a French physicist, discovered that the pressure in a fluid in equilibrium is the same everywhere, if the effect of gravity is neglect..
Thermoelectricity (Contd...)
In 1834, a French scientist Peltier, found an effect that was the converse of the Seebeck effect..
Biosphere
This is the domain of living organisms in contact with atmosphere, hydrosphere as well as lithosphere. Man has begun to effect significant changes in his natural environment mainly after the advent of the Industrial revolution. The change in industrial and agricultural practice..
Louis Pasteur
, a French scientist, injected aged culture of cholera bacteria into healthy chicken. Such an aged culture was too weak to cause disease in the chicken. When fresh culture of fowl, cholera bacteria was injected into those chicken the disease did not manifest because those chicken had bec..
, a French scientist, injected aged culture of cholera bacteria into healthy chicken. Such an aged culture was too weak to cause disease in the chicken. When fresh culture of fowl, cholera bacteria was injected into those chicken the disease did not manifest because those chicken had bec..Working
Let us suppose that the generator coil ABCD is initially in the horizontal position. As the coil rotates in the anticlockwise direction between the pole N and S of the magnet the side AB of the coil moves down cutting the magnetic lines of force near the N-pole of the magnet and side DC moves up, c..
Global Warming
>o F in the next century. But, the entire scientific community was not convinced that global warming was occurring. However, the new data coming in is unsettling. The latest evidence that the earth's climate is getting warmer comes not from theoretical models, but from birds, trees, flowers and gla..
Force on a Conductor in a Magnetic Field
Force Acting on a Current-Carrying Conductor in a Magnetic Field - Oersted's experiment shows that a current carrying wire exerts a force on a magnetic needle and deflects it from its usual north-south position. The reverse must also be true, which was proved by the French scientist Andre..
Force Acting on a Current-Carrying Conductor in a Magnetic Field - Oersted's experiment shows that a current carrying wire exerts a force on a magnetic needle and deflects it from its usual north-south position. The reverse must also be true, which was proved by the French scientist Andre..Discovery of Radioactivity and Nature of Radiations
In 1896, the phenomenon of radioactivity was accidentally discovered by French scientist Henri Becquerel. He was performing experiments with uranium compounds. He accidentally placed a crystal of potassium uranyl sulphate over photographic plate wrapped with usual black paper. On develo..
Question 4
. Without this natural 'greenhouse effect', temperatures would be much lower than they are now, and life as known today would not be possible. Instead, thanks to greenhouse gases, the earth's average temperature is a more hospitable 60 0 F. However, problems may arise when the atmospheric..
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