Any experiment in physics is conducted with the understanding that the only and therefore prevailing theory is quantum physics. However, this physics itself can be very easily, inexpensively and experimentally refuted by the fact that the famous double-slit experiment was conducted incorrectly and, therefore, misunderstood.
I mean this: the addition of a device near the slits on the screen, through which photons pass, which registers how the photons pass, affects the experiment in such a way that the interference simply disappears. Why does observation lead to disappearance? I assert that if the same device is moved a significant distance away from the slits, the interference will not disappear. But as the device is brought closer, it will again.
This result can be explained by the change in the molar masses and volumes of the bodies involved in the experiment: the registering device increases them. This is the entire explanation of the experiment that led to the creation of quantum physics, as well as its instant collapse.
There is no quantum physics!