Explore each form from the oldest known stage to today.
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The kanji 影 is a phono-semantic compound (形声文字) formed during the seal script (篆書) period in China. Its semantic component is 彡, which originally depicted rays of light or decorative patterns, but in this context, signifies "light" or "illustration." The phonetic component is 景 (kei, kage), a character which itself means "light" or "scene" and is composed of 日 (sun) and 京 (a tall structure, implying elevation). Thus, 景 originally conveyed the concept of "sunlight." The creation of 影, by adding the "light" radical 彡 to 景, was to specifically express the phenomenon of a "shadow" created when an object blocks light, essentially defining a shadow as an "illustration or form created by light." Historically, the character evolved through the following stages: it first appeared in a stable form in seal script, then transitioned to the more stylized clerical script (隷書), and finally standardized into the modern kaisho (楷書) block style. The core concept has remained consistent: a shape or form cast by the interception of light. The character, along with the vast majority of the kanji system, was introduced to Japan in waves, primarily through Buddhist scriptures and other Chinese cultural and philosophical texts between the 5th and 8th centuries. It was formally adopted into the Japanese writing system, with its pronunciation adapting to the Japanese phonological system. Linguistically, the on'yomi (Sino-Japanese reading) is "ei," as in words like 影響 (eikyou - influence). The kun'yomi (Japanese reading) is "kage," which is the native Japanese word for shadow or reflection. This dual reading structure perfectly illustrates the character's integration. A notable cultural point is that in Japanese, "kage" can refer not only to a literal shadow but also to a reflection in water or a mirror, a silhouette, or even a trace or vestige of something. This reflects a conceptual understanding where the shadow is not merely an absence of light but a visible, though intangible, representation of the original object.