Write a very short note( around 8 to 10 lines) on: " How different our world would be if light did not travel in a straight line?" What is this property of light called? Which are the areas where this property of light is used?
Answers
Answer:
Well, if this happens at large extent in our daily lives, we won't need Rear View Mirrors in our cars, Most of the distant objects would be invisible to us, Optical fibres will then not be required for EM Transition, The wavelengths of the light coming from our surroundings will undergo Interference and diffraction imparting absolutely senseless Images on our Retina. Wearing Specs would have no meaning etc. It would be a very much worse condition for the mankind if Light actually didn't follow the straight line.
However, this phenomenon doesn't occur at normal scale, but it does happen in the vast Stellar space. Einstein's Field Equation have established the fact that light bends near the domain of huge stellar mass, and that angle of deviation is directly proportional to the Mass of the Star. This actually helps the Cosmologists to view and study the stars that are located exactly behind our Sun, detect the presence of a Black Hole, Determine the distance between two cosmological objects on the basis of Wavelength shift due to Gravitational hindrances, and much more.
Explanation:
Light would be able to bend and flow around opaque things if it didn't travel in straight lines; it wouldn't be obstructed, thus there would be no shadow. Light moves in straight directions, as seen by shadows.
- Well, if this occurs frequently in our daily lives, we won't need rearview mirrors in our cars; most distant objects will be invisible to us.
- optical fibres will no longer be required for EM Transition; and the wavelengths of light coming from our surroundings will undergo interfering and diffraction, imparting completely meaningless images on our retina.
- It would be pointless to wear spectacles, for example. If Light did not follow the straight path, it would be a much more dangerous situation for humanity.
- This phenomena, however, does not occur on a regular scale, but does occur in the vastness of Stellar space.
- Light bends towards the region of massive stellar mass, and the angle of deviation is precisely proportional to the mass of the star, according to Einstein's Field Equation.
- This allows cosmologists to observe and analyse the stars directly behind our Sun, identify the presence of a Black Hole, calculate the distance between two cosmic objects using Wavelength shift owing to Gravitational hindrances, and much more.