Why did chief justice earl warren argue in the brown decision that separate could never be equal?

Chief Justice Earl Warren argued in the Brown decision that separate could never be equal because public education—which is a right for every citizen and deserved equal protection in accordance with the Fourteenth Amendment—had separate educational facilities for whites, and for blacks. This implied that both races were treated separately; being separated in such a way could not make them equally protected as expected by the constitution.

the use of electrical signals that transit messages is know as

can you explain it better