Double-slit experiment

.The scientist Claude Johnson carried out this experiment to find out the behavior of electrons. Do they really behave like particles always? To describe this experiment, we take a device that throws electrons towards a wall with two slits, and behind this wall a screen is placed that can monitor the lines falling on it. We also know that electrons are physical particles, and therefore the result is expected in all cases. Two vertical lines (as the old expression says), but the result was stranger than imagination What appeared was that the entry of electrons through a double