Reflection of single point of light on water.
I've noticed that a single point of light like a light bulb on a boat dock reflects as a streak of light rather than a point of light on the water. Anyone know why or rather what determines the length of the streak?The moon high in the sky reflects as a round image of the moon not a streak.
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It's geometry. Here's another puzzler for you: When you look in a mirror, why is everything backward but not upside down? Hmmm...