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Sebelum ada senter, para penambang menggunakan lampu berbahan bakar karbit dan air untuk menerangi gua batu bara. 🤔 Kok bisa? ⛑️ Di dalam lampu ini ada dua ruangan. Bagian atas diisi air dan bawah diisi karbit. ⚗️ Saat dinyalakan, air akan menetes dari atas mengenai karbit, dan bereaksi menghasilkan gas asetilen. 🔥 Gas asetilen inilah yang disalurkan keluar, lalu disulut menjadi nyala api berwarna putih, mirip cahaya matahari. 👷 Penambang bisa mengatur kecerahan lampu dengan meneteskan lebih...
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