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| incandescent |
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| Incandescent light bulbs are standard bulbs that use glowing filaments that act as heaters to produce light. Only about 10% of the energy released is in the form of visible light, and the rest is used to produce heat. | | ionizer |
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| An ionizer is a device that emits negatively charged ions. They are often used as air purifiers. | | isopropyl alcohol |
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| Isopropyl alcohol is an antibacterial solvent liquid. It is also used as a denaturant in many cosmetic products - a poison, added to make the product make it unfit for drinking. It has no known toxicity to the skin. Isopropyl alcohol is made from propylene, which is obtained from petroleum. |
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