Physics

Major purpose of this lecture is to present on Optics and Mirrors. Rays seem to come from behindthe mirror, but, of course, theydon’t.  It is virtually as…

The aim of this lecture is to present on Reflection. Law of Reflection: the angle of incidence equals the angle of reflection. The angle which the incident ray…

Prime purpose of this lecture is to present on Light: Geometric Optics. Light travels in straight lines under a wide variety of circumstances. Light travels in straight line…

General purpose of this lecture is to present on Light and Optics. Optics is the branch of physics which involves the behaviour and properties of light, including…

A different grating has numerous tiny slits, equally spaced. It separates white light into its component colors just as a double slit would. When a…

Christiaan Huygens, a contemporary of Newton, was an advocate of the wave theory of light. Huygen’s principle states that a wave crest can be thought…

This lecture introduce on Concave Mirrors. A curved mirror is a mirror with a curved reflecting surface. One advantage that mirror optics have over lens optics is that mirrors do not introduce chromatic…

Galileo was the first to use a refracting telescope for astronomy. It is difficult to make large refracting telescopes, though, because the objective lens becomes…

Refracting telescopes are comprised of two convex lenses. The objective lens collects light from a distant source, converging it to a focus and forming a…

Primary objective of this lecture is to present on Human Eye: Hyperopia and Myopia. The human eye is a fluid-filled object that focuses images of objects on…

Principle objective of this lecture is to present on Chromatic Aberration. As in a raindrop or a prism, different wave-lengths of light are refracted at different angles…

Major objective of this lecture is to present on Convex Lens in Water. Since water has a higher index of refraction than air, a convex lens made…