Physics

Prime purpose of this lecture is to present on Sources of Infrared Light. Infrared light from the Sun accounts for 49% of the heating of Earth, with the rest…

A spectrum is the amount of light given off by an object at a range of wavelengths. A spectral line is a dark or bright line…

The normal human retina contains two kinds of light sensitive cells: the rod cells (active only in low light) and the cone cells (active in…

Principle purpose of this lecture is to present on Close Eye to Optical Illusions. it is a tutorial study based presentation. An optical illusion is characterized by…

The Human brain put images together because it has learned to expect things; sometimes the data might get a little confused. We may see an illusion…

Major purpose of this lecture is to present on Optical Illusions. Optical Illusions are something that deceives the eye by appearing to be other than it is. Illusions…

Temperature – The Kelvin Scale named after Lord (William Thompson) Kelvin in 19th century Scottish physicist. There are one degree difference on the Kelvin (K) scale is…

The aim of this lecture is to present on Black Body Radiation. Blackbodies emit light at all wavelengths. Very cool objects peat at radio wavelengths and very hot…

Basic purpose of this lecture is to present on Infrared Light. Infrared (IR) is a form of light (or electromagnetic radiation). Infrared light is found between visible light…

Infrared telescopes allow astronomers to gain information about regions in space that might otherwise remain invisible. An infrared telescope is a telescope that uses infrared…

General purpose of this lecture is to present on Infrared Telescopes. Infrared is a certain region in the light spectrum and ranges from .7µ to 1000µ or…

Prime objective of this lecture is to present on Light, Reflection and Mirrors. Light is a form of Electromagnetic Energy. It is a part of the Electromagnetic Spectrum…