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.
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.
ATMOSPHERIC REFRACTION
If an object is observed through hot air above a fire or radiator, it shows random wavering or flickering.
DISPERSION OF WHITE LIGHT BY A GLASS
PRISM
When sunlight passes through a small hole, it gives a narrow beam of white light.
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 angle between its two lateral faces is called the angle of the prism.
DEFECTS OF VISION AND THEIR
CORRECTION
Defects of vision (refractive defects) are caused due to gradual loss of power of accommodation.
The eyeball is nearly spherical with a diameter of 2.3 cm.
ENVIRONMENTAL
CONSEQUENCES
Exploiting sources of energy disturbs the environment.
ALTERNATIVE
OR NON-CONVENTIONAL SOURCES OF ENERGY
CONVENTIONAL
(TRADITIONAL) SOURCES OF ENERGY