How did Roentgen discover the radiation later named after him? Detailed answer

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How did Roentgen discover the radiation later named after him? Detailed answer

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How did Roentgen discover the radiation later named after him?

On November 5, 1895, the German physicist Wilhelm Conrad Roentgen (1845-1923) conducted an experiment to study the luminescence caused by cathode rays. To make the effect clearer, he not only placed the cathode ray tube and the luminescent substance in a black cardboard box, but even tightly curtained the windows in the laboratory.

Turning on the cathode ray tube, Roentgen suddenly saw a flash of light in the other half of the room. It turned out that the light came from a sheet of paper coated with barium platinocyanide, a luminescent substance. Roentgen was very surprised: how could the radiation penetrate the walls of the box and cause the paper to glow? He turned off the cathode ray tube - the glow disappeared. Turned on the receiver again - the glow appeared again. X-ray moved the paper to another room - it continued to glow. It became clear to the scientist that a certain form of radiation arises in the cathode ray tube, capable of penetrating not only through cardboard, but also through walls.

Roentgen had no idea about the nature of these rays, so he called them X-rays (X-rays). Already other scientists began to call them X-ray.

For the discovery of these rays, Roentgen was awarded the Nobel Prize in Physics in 1901.

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

How was platinum discovered in the Urals used in the beginning?

In 1819, in the gold mines near the Ural city of Nevyansk, placers of some unknown metal began to be found along with gold. For its gray color and similarity to silver, it was contemptuously called "silver" and, separated from gold, was thrown into heaps with washed sand. Especially smart hunters used large grains "silver" instead of shot.

It took several years before they knew they were shooting ducks with platinum!

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According to Biing-Jye Lee, chairman of Epistar, Taiwan's leading LED chip manufacturer, global shipments of replacement LED light bulbs in 2013 could reach 600 million units, up from 200 million units in 2012. will give an increase of 300%.

“However, compared to annual shipments of 10 billion conventional lamps, the figure for the LED market segment is still low. But if growth of 300% continues in 2014, then the total production of LED lamps is likely to reach the level of 2 billion units. a year," Li said.

In addition, the price gap between the upgraded 40W LED replacement lamp and the energy saving lamp continues to narrow in 2013.

Li added that when the total supply of LED lamps reaches 1,8-2 billion pieces, it will require 300 sets of MOCVD (metal-organic chemical vapor deposition) equipment to ensure output. "Adding demand for LED 'tubes' and specialty lighting products, it is possible that the overall lamp market could reach equilibrium in the second half of 2014 or 2015," Li said. Currently, the total capacity of MOCVD equipment is about 2300-2400 complexes.

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