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Natural Science
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Light
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Age 13-17
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level: 9
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English
คำแนะนำของผู้เขียน
Concave means "hollowed out or rounded inward" and is easily remembered because these surfaces "cave" in. The opposite is convex meaning "curved or rounded outward." Both words have been around for centuries but are often mixed up. Advice in mirror may be closer than it appears.
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Natural Science
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Light
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Age 13-17
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level: 9
-
English
คำแนะนำของผู้เขียน
Concave means "hollowed out or rounded inward" and is easily remembered because these surfaces "cave" in. The opposite is convex meaning "curved or rounded outward." Both words have been around for centuries but are often mixed up. Advice in mirror may be closer than it appears.