melanoscope
/'melənəskəʊp/
📖 中文释义
- 红外线镜
📘 English Definition（英文释义）
- n. An instrument containing a combination of colored
- glasses such that they transmit only red light, so that objects of
- other colors, as green leaves, appear black when seen through it. It is
- used for viewing colored flames, to detect the presence of potassium,
- lithium, etc., by the red light which they emit.