In a typical double-slit experiment, a single particle such as a photon or an electron can exhibit wave-like behavior, resulting in an interference pattern on a screen beyond the slits. However, if you introduce a third slit in the setup, the interference pattern becomes more complex.
In a triple-slit experiment, each particle can still pass through all three slits. However, the resulting interference pattern on the screen will differ from that of a double-slit experiment. The presence of the third slit introduces additional interference effects, resulting in a more intricate pattern.
The pattern observed on the screen will depend on the exact arrangement of the slits and the characteristics of the particles used in the experiment. It is difficult to predict the precise pattern without specific details about the setup, such as the separation between the slits and the wavelength of the particles.
Overall, a single particle in a triple-slit experiment can pass through all three slits, but the resulting interference pattern will be more complex compared to a double-slit experiment.