Recently, I started to go deeper into physics. I don't speak English well, so I'm sorry. This experiment was carried out in Hungary 25 years ago. The measurement results were not accepted by the experts. The cause of the error was not justified. It was repeated several times in a home laboratory, the result was always the same. 1; IT IS POSSIBLE? 2; WHY DOES THE DIFFRACTION PATTERN SPECTRUM CHANGE DUE TO THE DISCS? 3; WHAT ARE THE POTENTIAL ERRORS? 4; HAS ANYONE TRIED THIS BEFORE? Thank you in advance for your answers!
Metal discs of various materials were also tested. Lead showed the biggest difference. The diffraction pattern is also created in many ways. Through two slits and other materials in the path of light. The largest deviation was achieved as shown in the picture. I made the sketch. The diagram is original.
The experiment was performed on a variety of optical benches. They always got similar results. All measurements were repeated without discs. The phase shift has always been the effect of the discs. The discs were not in direct contact with the tube.
Here's the original study. http://hunok.hu/vegyes/tireslab-english/all-labor2.html Since then, the experiment has been repeated many times and under better conditions. The discs were in separate holding troughs, completely independent of the tube support structure. Phase shift and Amplitude Change have always been measured Heat and frequency compensated lasers were used.