What are three phases of water

Under normal conditions, water exists in one of three phases, the solid phase (ice), the liquid phase (water), and the gaseous phase (steam).

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Viewed from afar, the wave function below may seem smooth and analog, but when you look closely there are tiny discrete steps as the signal tries to approximate values: That's the big difference between analog and digital waves. Analog waves are smooth and continuous, digital waves are stepping, square, and discrete.