Science blackboard with math. Real physical equations of Einstein relativity theory, string theory and quantum mechanics. Used chalkboard with scratches and stains from chalk piece. premium vector by ikonstudios

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white vector background design sign energy board black formula Hand symbol real string school complex law drawing wood education science solution study universe college University research physics quantum theory scientific great mathematics inflation blackboard mathematical diagram chalk popular relativity math principle chalkboard uncertainty cosmology equation related constant einstein equations

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