Optics is the branch of physics that deals with interaction of light with matter. The field of optics helps us understand wide variety of phenomena such as reflection, refraction, diffraction and interference of light. Many optical instruments such as lenses, mirrors, microscope and telescopes helps us observes different phenomena in the world. Moreover the field of optics has numerous applications in photography, astronomy, medicine and fiber-optic communication.
What is Periscope? A periscope is an optical instrument which is used to see objects that are not in the direct line of sight of observer. It is commonly used in such areas or places where the viewer is hidden or protected such as in submarines to observe surface above water. Working Principle Periscope works … Read more
A solar lighter works by concentrating the sunlight to create enough heat to ignite a combustible material. How it works? The working of solar lighter is as follows: 1. Reflective or Focusing Surface Solar lighters use a parabolic mirror (often made of metal) to focus sunlight into a single, intense point. The mirror has concave … Read more