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physical:signal,
-
mechanical:wave,
-
invisible:wave,
-
natural:signal,
-
theoretical:entity,
-
electric:field,
-
invisible:force,
-
diverse:form,
-
physical:disturbance,
-
physical:carrier,
-
physical:energy,
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periodic:phenomenon,
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periodic:signal,
-
hypothetical:entity,
-
negative:elements,
-
negative:energy,
-
analog:quantity,
-
ordinary:energy,
Category Nuances for electromagnetic_wave:
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physical,
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analog,
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theoretical,
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mechanical,
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natural,
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hypothetical,
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electric,
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periodic,
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negative,
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invisible,
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ordinary,
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diverse,
Simple Categories for electromagnetic_wave:
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form,
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field,
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signal,
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phenomenon,
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entity,
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wave,
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elements,
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quantity,
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carrier,
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force,
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disturbance,
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energy,