The search was on for a commercially viable blue LED, which, when combined with existing red and yellow LEDs, could produce a wide spectrum of colors.
Nchọgharị ahụ nọ na-eme ka ndị na-acha ọbara ọbara na-acha ọkụ ọkụ na-ere ahịa, nke, mgbe ejikọtara ha na uhie na-acha uhie uhie na odo odo, nwere ike ịmepụta ọtụtụ ụdị agba.