I beat without a heart, I signal without sound, I am felt though never found. What am I?
Category: Brain · Difficulty: hard
Hint: Focus on an effect felt physically but not always heard
Answer
A vibration through solid matter
Explanation
Vibrations travel through solids causing sensations without audible sound or heartbeats.
This is a hard brain riddle — a tricky one that takes a little thought. The answer is A vibration through solid matter.
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