Original Video Credit: IG/namayeshgah_cheragh Long before LEDs and battery powered lights, pressurized lanterns like the Petromax could produce an astonishing amount of illumination using only kerosene and clever engineering. The process begins with the rapid heater, which creates a powerful blue flame beneath the generator tube. This preheats the metal components so liquid kerosene can be converted into a vapor before entering the burner. Once the generator is hot enough, the main valve is open

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niche engineering majors ranked by how worth it they actually are 📊 criteria: starting median salary (NACE 2026 BLS May 2024), job growth through 2034, annual job openings, geographic flexibility, and future-proofness vs AI market shifts some things that surprised me doing this research: materials science is genuinely S tier and nobody talks about it. $108K median, runs semiconductors, EV batteries, and AI hardware, and the lab work literally cannot be automated. most slept on major on this lis