An incandescent lamp is a source of light produced by channeling an electric current through a filament which then heats up and produces light.
In the 1870s, an inventor named Thomas Alva Edison from Menlo Park, the state of New Jersey, United States, began to participate in the effort to design incandescent lamps.
Lampu pijar adalah sumber cahaya buatan yang dihasilkan melalui penyaluran arus listrik melalui filamen yang kemudian memanas dan menghasilkan cahaya. Pada tahun 1870-an, seorang penemu bernama **Thomas Alva Edison** dari Menlo Park, negara bagian New Jersey, Amerika Serikat, mulai ikut serta dalam usaha merancang lampu pijar.
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