What is the principle behind diffusion of gases?

What is the principle behind a compass needle?

What is the principle behind the principle of homogeneity of dimensions?

What is the principle behind a beam balance?

What is the principle involved in dialysis?

We know that gases which donot react chemically intermix irrespective of their nature. This is known as diffusion. The law of gravitation does not apply to diffusion which means that lighter gases can more downward while the heavier ones can move upwards. (i) State Graham's Law of diffusion. (ii)Give Its mathematical form. (iii) What is the value associated with the phenomenon of diffusion of gases?

What is the principle of least time?

What is the principle of zone refining of metals?

What is the principle of reversibility?

What is the principle on which SONAR is based ?