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#hamiltonian #quantum mechanics #observable #hermitian operator #energy operator

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#daylight vision #visible in light #clearly seen #perceptible #observable #unhidden

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#kasat mata #tangible object #physical matter #real world #observable #seen object #concrete #benda nyata

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#noticed #pointed out #brought to attention #seen #observable #witnessed #acknowledge #in view #visible comment

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#tangible world #physical world #empirical evidence #material world #observable

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#phene #scientific trait #color trait #characteristic #observable #gene result

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#reactive streams #observable #event stream #RxJS #ReactiveX #data flow