there were no significant updates to the type of observation device used in the double-slit experiment. The basic setup of the double-slit experiment has remained relatively unchanged since its inception.
In the double-slit experiment, a beam of particles or waves, such as light or electrons, passes through two parallel slits and produces an interference pattern on a screen behind them. The observation device typically consists of a screen or a photographic plate that records the resulting pattern.
However, it's worth noting that various modifications and advancements have been made to enhance the precision and sensitivity of the detection devices used in the double-slit experiment. These improvements allow for more accurate measurements and detailed investigations of the phenomenon.
Research in quantum physics and related fields is continuously evolving, so there is always a possibility of new developments in the experimental techniques used in the double-slit experiment or other related experiments. Therefore, it's advisable to refer to the latest scientific literature or research updates to stay informed about any recent advancements in this area.