The double-slit experiment with electrons demonstrates an interference pattern that does not correspond to traditional transverse or longitudinal waves. Instead, the electron waves are described by a quantum mechanical wave function, which indicates probabilities of physical interactions rather than physical oscillations. This wave function allows for the emergence of wave-like properties, such as interference, but these behaviors are not indicative of a true physical phenomenon. The underlying nature of electron waves is fundamentally different from classical wave types. Ultimately, the interference pattern cannot be used to classify electron waves as either transverse or longitudinal.
