einstein relativity formula and some related concepts written blackboard |
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| navigate by keyword : albert algebra background bang big black blackboard board business chalk chalkboard classroom college communication concept concepts drawing education einstein einsteins energy formula hand handwriting idea knowledge learn marketing mass math mathematics message placards plan related relativity school science sign solution some study success symbol teacher text theory theroy university uppercase white word words write written |
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| Black and white chalkboard background written with white chalk placards `Theroy Energy Relativity Big Bang Albert Einstein` in uppercase |
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