Benda dibawah ini yang merupakan sumber cahaya yang alami, lampu senter, lilin menyala, matahari, lampu neon, Siapa penemu lampu pijar, Thomas Alva Edison, Alexander Graham bell, Supratman, Kusbini, Ibu kota provinsi Jawa Barat, Bekasi, Bandung, Surabaya, Jakarta

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