red light laser

Newton's Experiment - Dispersion of Light - Sir Isaac Newton, while studying the images of heavenly bodies formed by a lens, found that the image is colored at its edges. In 1665, to investigate this, he performed an experiment using a prism. Newton darkened his room at Trinity College, C..

Doppler Effect in Light - Whenever there is a relative motion between a source of light and the observer, the apparent frequency of light received by the observer is different from the true frequency of light emitted actually from the source of light..

The above picture shows the diffraction fringe formed by light passing through holes of various sizes. This shows the diffraction fringes obtained at the edges of razor blades. When the source is a white light, the diffraction pattern is colored but the central fringe is always ..

. When these colors are incident on the second surface of the prism they again undergo refraction (they get refracted from a denser medium to rarer medium) and the colors are separated further. Thus a beam of white light incident on a prism splits into its constituent colors to form a spe..

(they get refracted from a denser medium to rarer medium) and the colors are separated further. Thus a beam of white light incident on a prism splits into its constituent colors to form a spectrum. Each constituent of the white light is deviated towards the base of the prism. Vi..

. Optic fibers are as thick as a human hair. If a beam of light is send down a thin glass rod, total internal reflection traps the light inside the rod. This technique is called 'fiber optics'. Fiber optics finds its use in the medical field too. Endoscopes use fiber optics tech..

Color of Transparent Objects - Any object which allows light to pass through it is known as a transparent object. The color of any transparent object is the color of the light transmitted by it. Ordinary window glass appears white because it allows all the colors in the white ..

The solution appears green when placed between the source of light and eyes of observer is in transmitted light. The solution appears red when source of light is placed behind the observer and solution is placed in front of observer is in reflected ligh..

In 1870 John Tyndall, a natural philosopher living in England, demonstrated one of the first guided light systems to the Royal Society. His experiment involved using water as a medium to prove that light rays bend. He filled a container with water and allowed the water to escap..

Role of Growth Regulators In Seed Dormancy - Gibberellins have been shown to be effective in breaking the dormancy in potato tubers and in tree buds in winter. Cytokinins have been found to be effective in breaking the dormancy of seeds. They also promote the germination of the seeds. The cytokinin..