SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
Energy-saving light bulb. The packaging (left) displays the European Union Energy Efficiency label, which is mandatory under EU law. The bulb is 15 watts and has the consumption equivalent to a standard incandescent bulb of 75 watts. This compact fluorescent lamp (CFL) is a spiral type of energy-saving light bulb. Fluorescent bulbs produce less heat than filament bulbs, therefore more of the electrical energy is converted to light, making them more efficient.
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