Famous physicist Niels Bohr once said – “If quantum mechanics hasn’t profoundly shocked you, you haven’t understood it yet.”
This is so true because quantum laws tend to contradict common sense. Quantum experiments constantly show us there is so much we still don’t understand about the world around. One subject that is truly bizarre, is the nature of what we define as reality.
Quantum experiments have revealed that reality does not exists unless we are looking at it. During the experiment scientists discovered that time went backwards. Cause and effect appear to be reversed. The future caused the past.
Does this make your head spin? Don’t worry, because you are not the only. Scientists are just as astonished as most of us.
John Wheeler’s Delayed-Choice Thought Experiment
Quantum physicists study subatomic particles, which are the essential building blocks of reality. All matter, including ourselves are made up of them. But, the laws governing the tiny microscopic world seem to be different to those dictating how larger objects behave in our own macroscopic reality.
A team of physicist from the Australian National University conducted John Wheeler’s delayed-choice thought experiment, which involves a moving object that is given the choice to act like a particle or a wave. The goal with the Wheeler’s experiment was to determine at which point does a photon decide when to be one or the other?
Common sense says the object is either wave-like or particle-like, independent of how we measure it.
The results were astonishing. Scientists expected the atom to behave just like light, meaning that it would take on both the form of a particle and/or a wave., but this is not what happened.