File:Cmglee Cambridge Science Festival 2016 sodium lines.jpg
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current | 06:10, 21 March 2016 | 3,072 × 2,048 (512 KB) | Cmglee | {{Information |Description ={{en|1=A demonstration of the 589 nm D<sub>2</sub> (left) and 590 nm D<sub>1</sub> (right) emission sodium D lines using a wick with salt water in a flame at the 2016 Cambridge Science Festival. }} |Source ={{own}... |
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