Waves and radiations. Wilhelm Rentgen

you are: Waves and radiations

It is necessary to remember that in the end of XIX century the digit tube was the device raising the greatest interest at physicists, and with it made experiments in the majority of laboratories of the world. From supervision of such new phenomenon any results by all means should follow, and here in 1895 Wilhelm Rentgen (1845-1923) has made remarkable opening. All who studies physics, should remember this date - a date started of that we name now ' modern physics '. How named its future generations, change of rates of development of physics remains from now on a certainty.

The X-ray experimented a digit tube and has noticed that when pressure in a tube reduced, the substance lying nearby (platinotsianid barium) started to be shone strongly; most strongly it was shone how the category when the vacuum became too high that in a tube there could be a current vanished. That nearby there was a named connection, there is nothing surprising: it was known thanks to a luminescence (fluorescence) in ultra-violet beams, and it could be found in the majority of physical laboratories.

The X-ray has thought that the luminescence was caused by ultra-violet beams from a tube, and for check of this assumption has concluded a tube in densely closed box from a black cardboard. To the surprise, he has not noticed any reduction of brightness of a luminescence. The luminescence could be found out even then when the screen deleted on two metres. The X-ray has understood at once that it has opened any new kind of the radiation, capable to pass through a material, not transparent for all other kinds of radiation, except radio-waves, the majority of scientists immediately would publish such opening. The X-ray considered that the message will make bolshee impression if it will be possible to cite any data about the nature of the beams opened by it, having measured their properties.

Therefore it tensely checked all assumptions which only came to to it mind. The X-ray has proved that beams proceeded from a tube, instead of from any other part of equipment. It has shown that the majority of materials is transparent for new radiation and some materials are more transparent. The book in one thousand pages hardly absorbed this radiation; the glass containing lead, absorbed it in a greater degree, than usual glass; hand bones absorbed more strongly, than a muscular fabric; platinum absorbed more strongly, than silver or copper. Many other substances, except platinotsianida barium, also let out a luminescence under the influence of new beams - many grades of glass, kaltsit and stone salt.