Arquivo para August 20th, 2019

How was holography born

20 Aug

Dennis Gabor was a Hungarian electrical engineer working in England in the post-war 1947 who, thinking of quality street lighting invented holography, in fact his research was to look for clearer records of electron microscopy.

The problem with nascent electron microscopy was the aberrations that the electromagnetic lens produced and he was trying to reduce, the electron microscopes were a breakthrough, and so he had a whole new idea, eliminating the lens.

This was because it was known that the information corresponding to light was independent of it and the process of photonics is not the same as light, although both depended on light, the natural light in the lens was only that which solar energy or local lighting allowed. ..

He experimented with light from low-pressure, green-filter mercury lamps that proved his point.

He had already experimented with mercury lamps, and the result proved what he already thought, the low-pressure green-filter mercury lamp that proved what he said.

In 1958 Yuri N. Denisvuk read a science fiction book, and unaware of Gabor’s invention, obtained the holography in another way, but in higher order did not publish the result.

 In 1962, the engineers E. Leith and Y. Ypatnieks who had in the laboratory the first practical laiser, and knowing Gabor’s idea, proved the effect and created the first high quality holograms, Gabor won the Nobel in 1972 and passed away in 1972. 1979