During our school days, we often use rulers and erasers. We may frequently observe the phenomenon that when rulers and erasers are in contact for a long time, they stick together. Especially when both the ruler and eraser are kept in a pencil case, this phenomenon occurs after a few days. Have you ever …
At times, we notice colored reflections on beef slices. Does this imply that the beef is spoiled? The muscle fibers in beef are quite thick, and when cut horizontally, the cut surface of the muscle fibers forms a regular concave-convex structure. When illuminated by light, this structure visually produces colored reflections due to the …
Why do we often observe colorful reflections on slices of beef? Read More »
