After transmigrating to another world, he discovers that magic is just another kind of science!
Light magic! Understand the difference between electromagnetic and ionizing radiation, then fire gamma rays directly.
Fire magic! Combustion. Oxygen feeds the flames, add hydrogen, wrap it all in a wall of air and heat it up. How about a little nuclear fusion?
Earth magic! Change atomic structures, rearrange matter, and make alloys by hand.
Wind magic! It's just air, right? Add some nitrogen, connect nitrogen to nitrogen and nitrogen to oxygen, and combine them to make nitrous oxide.
Water magic! Add hydrogen bonds to make ice, or disperse water molecules to make mist.