Holography

While trying to improve the resolution of the holographic electron microscope, a smart person named Denis Gabor developed the holographic theory. It dates back to 1947. Dennis Gabor is a British / Hungarian scientist who created the word Greek for holography. Whereas grammar means "information", he uses the word holos meaning "whole". Gabor expressed his work as a "coincidence discovery experiment" and the experiment began soon. In the next 10 years, the light sources available at that time were contradictory, so I felt frustration in holography.

Electron holography is a holographic technique applied to electron waves rather than light waves. Dennis Gabor invented electronic holography to raise the resolution of the transmission electron microscope and avoid aberrations. Today, magnetic fields and electric fields can change the phase of the interference wave that passes through the sample, so it is commonly used for the study of electric and magnetic fields in thin films. The principle of electronic holography can also be applied to interference lithography.

The history of holography started in 1947. At that time, British scientist Dennis Gabor from Hungary developed holographic theory. When he was trying to improve the resolution of the electron microscope, he thought about this idea. He created "hologram" in two Greek languages. Horos means "whole", grammar means "information". This may be a common medical practice today, but surgeons and doctors had not washed their hands before testing or surgery before 1850. This situation changed in 1847 when the obstetrician Ignaz Semmelweis of Hungary asked whether the disease was caused by "evil" or not.

A method of creating a three-dimensional photographic image without a lens is called holography, and the image is called a hologram. British physicist Dennis Gabor developed holographic theory in 1947. However, the first production of holograms was not done until the advent of laser technology in the 1960s. Holography has almost no similarity with conventional photos. The hologram contains information on the size, shape, brightness, and contrast of the object being recorded. Lasers are used to generate holograms. Because their light is colorful and directional is high. The hologram records the image when the light wave emitted by the laser is reflected by the object. When illuminated and observed under normal light, the hologram presents a three dimensional reconstruction of the original object.