an optical phenomenon whereby, when a convex lens is placed on a flat glass plate, a dark spot surrounded by bright and dark rings is visible to the observer at the point of contact
| 单词 | Newton's rings |
| 释义 | Newton's ringspl nounan optical phenomenon whereby, when a convex lens is placed on a flat glass plate, a dark spot surrounded by bright and dark rings is visible to the observer at the point of contact |
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