Fact 1: Alight bulb converts electrical energy into light energy when it is turned on. Fact 2: In Denver, traffic signal lights are being converted to the new energy-saving bulbs. Given the two facts above, answer the question "What converts electrical energy into light energy when it is turned on?" with the following options: - Something found in a traffic signal - deoxyribonucleic acid - Something found in a hand mixer - Something found in a power strip - Something found in a hair dryer - polymers of nucleotides - a hemisphere is tilted away from the sun - an electron microscope
A:
Something found in a traffic signal