Showing posts from February, 2022
THE HUMAN EYE AND THE COLOURFUL WORLD SCATTERING OF LIGHT The path of a beam of light passing through a true solution is not visible. But it is visible through a colloidal solution due to scattering of light.
THE HUMAN EYE AND THE COLOURFUL WORLD ATMOSPHERIC REFRACTION If an object is observed through hot air above a fire or radiator, it shows random wavering or flickering.
THE HUMAN EYE AND THE COLOURFUL WORLD DISPERSION OF WHITE LIGHT BY A GLASS PRISM When sunlight passes through a small hole, it gives a narrow beam of white light.
THE HUMAN EYE AND THE COLOURFUL WORLD REFRACTION OF LIGHT THROUGH A PRISM A triangular glass prism has two triangular bases and three rectangular lateral surfaces. These surfaces are inclined to each other.…
THE HUMAN EYE AND THE COLOURFUL WORLD DEFECTS OF VISION AND THEIR CORRECTION Defects of vision (refractive defects) are caused due to gradual loss of power of accommodation.
THE HUMAN EYE AND THE COLOURFUL WORLD THE HUMAN EYE The eyeball is nearly spherical with a diameter of 2.3 cm.
SOURCES OF ENERGY ENVIRONMENTAL CONSEQUENCES Exploiting sources of energy disturbs the environment.
SOURCES OF ENERGY ALTERNATIVE OR NON-CONVENTIONAL SOURCES OF ENERGY Solar Energy
SOURCES OF ENERGY CONVENTIONAL (TRADITIONAL) SOURCES OF ENERGY Fossil Fuels
SOURCES OF ENERGY In a physical or chemical process, total energy is conserved.
