倒像 (dào xiàng) — inverted image (in optics) | tongtong Chinese Dictionary

Definition

A technical optics term for the upside-down image formed when light passes through a convex lens or pinhole. Contrast with real image (实像) and virtual image (虚像).

noun

inverted image (in optics)

Examples

，倒像。
Zài guāng xué shí yàn zhōng, wǒ men guān chá dào le dào xiàng.
In the optics experiment, we observed an inverted image.
倒像。
Xiàng jī jìng tóu xíng chéng de dào xiàng kě yǐ tōng guò léng jìng fān zhuǎn.
The inverted image formed by the camera lens can be flipped by a prism.
倒像。
Tū tòu jìng chǎn shēng de dào xiàng shì shàng xià diān dǎo de.
The inverted image produced by a convex lens is upside down.

Origin

Compound word

构词法gòucífǎ

偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

倒dǎoinverted

倒 means inverted and 像 means image: an inverted image.

Characters in this word

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

亻到倒

Meaning part形符xíngfú

亻Written in full as人rén

Sound part声符shēngfú

到

到dào倒dào

Same sound today

倒 combines 亻 (person) with 到, which gives the sound.

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

亻象像

Meaning part形符xíngfú

亻Written in full as人rénperson

Sound part声符shēngfú

象

Same sound today

像 uses 亻, the side form of 人 (person), with 象 giving the sound.

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