mc2 einstein
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mc2 einstein |
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| navigate by keyword : algebra black blackboard blank block board chalk chalkboard class classroom classwork color conference course courses dirty drawing drawn educating education educational effect einstein formula formulas frame free green grunge hand horizontal information instruct instruction intellegence knowledge learn learning lecture lesson lessons letters marketing math mathematics mc2 message number physics relativity school schooling science scientific sketch sketching strategy structure studying symbol symbols teach teacher teaching text texture textured train training tutoring unwritten wooden write writing written |
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| Einsteins theory is written with chalk on a blackboard |
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