Why is it, when you try to wipe away drops of blood off of a surface, it leaves a behind a thin ring around it which is harder to clean? 1.08K viewsJanuary 3, 2024 Question91.84K February 13, 2020 0 Comments Why is it, when you try to wipe away drops of blood off of a surface, it leaves a behind a thin ring around it which is harder to clean? In: Physics 17 Answers ActiveNewestOldest Anonymous Posted February 14, 2020 0 Comments Because blood coagulates (changes from a liquid to solid as it dries). The outer edges of the blood dry first and stick to the surface. Other liquids that also do this are paints are milk. You are viewing 1 out of 17 answers, click here to view all answers. Register or Login
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