Energy-efficient light bulbs. Assortment of energy-efficient (low energy) light bulbs. These light bulbs use a process similar to that in fluorescent tubes,rather than the simple glowing filament of conventional bulbs. These bulbs are up to five times more efficient at converting electricity into light. Therefore,for a given light output,the bulbs use far less electricity. Although more expensive than traditional bulbs,these designs last far longer,providing an overall saving | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Bond, Martin |
Taille de l’image : | 2908 px × 3543 px |
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Property Release : | Non requis |
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