Understand
The Observer Effect

At the quantum level, a particle like an electron is not always in a perfectly defined state.

Before a measurement is made, it can be described as a set of possibilities. Physicists then talk about superposition of states.

For example, instead of being in a specific location, a particle can have several possible positions, each with a certain probability.

One of the most famous experiments illustrating the observer effect is the double slit experiment.

When particles are sent through two openings without attempting to determine which one they pass through, they produce a characteristic wave pattern.

But when a measuring device is installed to determine their path, the observed behavior changes and the particles behave more like localized objects.

This experiment shows that the information obtained during measurement influences the observed outcome.