The Double-Slit Experiment
- Quantum Guru Niels Bohr worked with physicist Pascual Jordan in the 1920s and conducted the now-famous experiment which involved tracking the path of a light beam through vertical slits and the outcome being displayed on a screen.
- As light is a kind of wave, an interference happens, and it turns into alternate bright and dark stripes on the resulting screen, depending on if they are reinforced or cancelled out.
- Oddly, when a ‘detector’ is placed in the slits, helping the observer know if light has passed through it, there is no interference. Nature seems to be changing its behaviour depending on whether it is observed or not.
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