1squared search - A round object that can roll smoothly (a water-worn stone or a carved wooden wheel).

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How to Rediscover the Laws of Motion Through Simple Observation Albert Einstein

Do not despair if the great libraries are gone. The universe itself is the only book you truly need, and your own mind is...

How to Rediscover the Laws of Motion Through Simple Observation Albert Einstein

Do not despair if the great libraries are gone. The universe itself is the only book you truly need, and your own mind is...