Waves and radiations. Charlz Barkla

you are: Waves and radiations

The X-ray has established that the beams opened by it dissipate substance mainly on small corners though it was possible to register absent-minded radiation of small intensity even under corners more than 90 °. In 1905 the English physicist Charlz Barkla (1877-1944) has spent measurements of these absent-minded beams, having taken advantage of ability of beams of the X-ray to discharge the electrified bodies.

Intensity of beams managed to be defined, having measured speed from which under the influence of them it was discharged elektroskop, say, with gold leaflets. Barkla in brilliant experiment investigated properties of absent-minded radiation, having caused its secondary dispersion. It has found that the radiation disseminated on 90 °, it was not possible to disseminate again on 90 °. It convincingly testified that X-ray beams represent cross-section waves.

If it so, what their length of a wave? Scientists tried to put difraktsionnye experiences on new radiation, believing that the length of their wave is much less, than at light. Any of these experiences has not brought success. Walter's work and the Fields has appeared the most considerable among them, spent to 1908 These scientists tried to reproduce in X-ray beams njutonovskuju difraktsionnuju a picture on a narrowed crack. They have covered edges of a crack with gold to provide the big absorption, and have shown that at width of a crack in the bottleneck of 1/50 mm were available signs ushirenija. The length of a wave of beams should then to be an order of 10~8 mm.