What can be measured but not seen?

What can be measured but not seen?

Other Difficult Riddles

Dies half its life. Lives the rest. Dances without music. Breathes without breath.

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When I get closer my tail grows longer, but when I go away my tail leads the way.

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I appear in the morning. But am always there. You can never see me. Though I am everywhere. By night I am gone, though I sometimes never was. Nothing can defeat me. But I am easily gone.

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What is it which builds things up? Lays mountains low? Dries up lakes, and makes things grow? Cares not a whim about your passing? And is like few other things, because it is everlasting?

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Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.

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Riddle of the Day

Mar 17, 2026

If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?

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