Presentation on Herschel Experiment
To perform a version of the experiment of 1800, in which a form of radiation other than visible light was discovered by the famous astronomer…
Physics
Fiber Optic Applications
Fiber is already used in: 90% of all long distance telephony; 50% of all local telephony; most CATV networks; most LAN (computer network) backbones and many video…
Lecture on Fiber Optics
This lecture briefly introduce on Fiber Optics. Fiber is the least expensive, most reliable method for high speed and long distance communications. Fiber Optics cable have greater bandwidth…
Law of Reflection
Principle objective of this lecture is to present on Law of Reflection. Law of Reflection is: Angle of incidence = Angle of reflection. The law of reflection states that…
Lecture on Light and Sound
Major objective of this lecture is to present on Light and Sound. In this lecture briefly describe on: Properties of light; Reflection; Colours; Refraction; Properties of sound and Hearing. Light travels much faster…
Light, Reflection and Refraction
The aim of this lecture is to present on Light, Reflection and Refraction. Light is a complex phenomena. Its exact nature is not fully understood and this…
Absorption of Light
Basic objective of this lecture is to present on Absorption of Light. Absorption of light happens when atoms in an object absorb (take in and hold) the…
Lecture on Light Waves
General objective of this lecture is to present on Light Waves. Light travels in the form of electromagnetic waves. It spreads out in all directions from its…
Introduction to Refraction
Refraction happens when a wave crosses a boundary between Medium 1 and Medium 2, the wave changes direction because it changes velocity. Frequency remains constant. Velocity changes…
What is an Optical System?
Basic purpose of this lecture is to present on What is an Optical System. In optics, an image-forming optical system is a system capable of being used…
Difference between Reflection and Refraction
This lecture introduce on difference between Reflection and Refraction. When a wave reaches a boundary it is: Partially reflected (bounces off surface) and Partially transmitted through surface. Reflection…
Lenses – an Application of Refraction
There are 2 basic types of lenses: Convex and concave lens. A converging lens (Convex) takes light rays and bring them to a point. A diverging lens (concave) takes light…
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