Atoms
Welding / Electric Current
Chemical Bond / Chemistry
Spectroscopy / Atomic Absorption Spectroscopy
Electromagnetic Spectrum / Spectral Line
Atoms / Plane (Esotericism)
Mole (Unit) / Chemical Compounds
Ionic Bonding / Chemical Bond
Copper / Chemical Compounds
Electron Configuration / Atomic Orbital
Gases / Chemical Reactions
Nuclear Magnetic Resonance / Antenna (Radio)
Atomic Nucleus / Radioactive Decay
Semiconductors / Electron Hole
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