13.9 MB (339.9 KB compressed)
5400 x 900 pixels
45.7 x 7.6 cm ⏐ 18.0 x 3.0 in (300dpi)
PHIL DEGGINGER / SCIENCE PHOTO LIBRARY PHIL DEGGINGER / SCIENCE PHOTO LIBRARY
Copper emission spectroscopy. Emission spectroscopy examines the wavelengths of photons emitted by atoms or molecules during their transition from an excited state to a lower energy state.
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