Double-Slit Experiment: How
can a particle of light enter two eyes at the same time?

Interference
Pattern
The pineal body is a small endocrine gland in the brain of most vertebrates. It acts as a light meter that produces the melatonin hormone, which modulates sleep patterns. The shape of the gland resembles a pine cone, which gives it its name. In some species it is called the third eye. The philosopher Descartes described it as the seat of the soul.
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