Diffraction is a process occurs when a light encounters an object or a plane surface. It is the interference of waves according to the Huygens-Fresnel principle in which wave propagation takes place. Diffraction is the process of slight bending of light when it passes around the edge of an object.
Reflection of light involves change in direction of waves. Refraction of light involves change in direction of waves when it passes from one medium to another. And Diffraction of light involves a change in the direction of waves as they pass through an opening or around the edges of a barrier in their path. Reflection, refraction and diffraction are behaviors of waves relate with the bending of the path of a wave.
A Hologram is a physical formation that diffracts light into an image. The term Hologram involves both the encoded material and the resulting image. A holographic image can be visualize by looking into an lighted holographic print or by shining a laser through a hologram and projecting the image onto a screen.
Holography relates with principle of interference. During this process hologram captures the interference pattern between two or more beams of laser light. Now the latest news for all technology lovers is, we can use Smart phones as a Hologram Projector.
Mrwhosetheboss establish a video showing how to create a 3D Hologram image using a smart phone. It do not require any expensive equipment. The image showing the ‘Hologram image in 3D using Smartphone.
without 3D goggle.
For this, we need Graph paper, CD case, Tape or Glue, Pen, Scissors, Knife or Glass Cutter, Smart phone etc. The structure is of Pyramid type made up of Glass material as shown in image.
But one disadvantage of this technology occur due to lasers formation in Hologram image. It is not safe to get into contact with such a holographic display, as radiated molecules will definitely burn human skin.