What are liquid crystals?                                                          Some organic solids having long rod-like molecules which do not melt to give the liquid substances directly. They instead, pass through an internet state called the liquid crystal state, often referred to…

Heat therapy has become standard treatment for ailing muscles among athletes, the disabled and elderly people. Heat packs provide relief by dilating the blood vessels of nearby muscles and allowing the soft tissue to stretch, and cold packs reduce the swelling and inflammation of injure…

When an intens beam of light is passed through a liquid or gas, some is scattred by the molecules of the medium. Most of the scattered light has the same frequency as the incident light.  This type of scattering which occurs without a charge in the incident frequency is termed Rayleigh …

What is Osmotic Pressure? A porous pot with cupric ferricyanide membrane deposited in its walls is filled with a rubber stopper having a long glass tube. It is filled with concentration aqueous sugar solution and immersed in distilled water. The osmosis of water through the membrane fro…

Diffusion and Osmosis Just as a gas can diffuse into vacant space or another gas, a solute can diffuse from a solution into the pure solvent. If you pour a saturated aqueous  solution of potassium permanganate with the help of thistle funnel into a breaker containing water.it forms a se…