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平面鏡 (heimenkyou) Japanese meaning: plane mirror | Kotomora

平へい面めん鏡きょう

へ

い

め

ん

きょ

う

Meanings

1

plane mirror

A flat mirror that reflects light without distortion; used in physics and everyday contexts.

平へい面めん鏡きょうに映うつった像ぞうは左さ右ゆうが逆ぎゃくになる。

The image reflected in a plane mirror is reversed left to right.

Kanji

平even, flat, peace
面mask, face, features
鏡mirror, speculum, barrel-head

Related words

鏡かがみ
General term for mirror; 平面鏡 specifically refers to a flat mirror, often in scientific contexts.
凹おう面めん鏡きょう
Concave mirror; 平面鏡 is flat, while 凹面鏡 curves inward.
凸とつ面めん鏡きょう
Convex mirror; 平面鏡 is flat, while 凸面鏡 curves outward.

Etymology

Compound of 平面 (flat surface) and 鏡 (mirror).