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Flammenfärbung im Schullabor

A middle-aged man with a buzz cut and safety glasses performs a flame test experiment in a school laboratory, holding a copper wire in a Bunsen burner flame that glows bright green.

A science teacher, a 44-year-old man with a tall frame, a light brown buzz cut, blue eyes, light skin, Central European features and light stubble, in safety glasses and a plain white coat, holding a copper wire in a Bunsen flame burning bright green in a school lab in Prague, the flame lighting his face from below, 50mm Mehr sehen

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