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reflectance

Upper-Intermediate (B2)

IPA: /rɪˈflɛktəns/

KK: /rɪˈflɛktəns/

noun
Definition

The amount of light or other radiation that is reflected off a surface compared to the amount that hits it.


Example

The reflectance of the water surface changes depending on the angle of the sun.


Conversation
Sloth A
I read an interesting article about reflectance and how it affects color perception.
Sloth B
Oh really? I didn't know that could change how we see colors.
Sloth A
Yeah, it mentioned how different surfaces have varying reflectance values.
Sloth B
That makes sense! I guess that's why some colors look different in different lighting.

Synonyms & Antonyms
Synonyms
reflectivity
emittance
radiance
Antonyms
absorbance
transmittance
opacity
Root Explanation

Reflectance → It is formed from "re-" (meaning back) and "flectere" (meaning to bend). The word describes the property of light bending back when it strikes a surface.

Memory Tip

Think of light bending 'back' ('re-') when it hits a surface ('flectere') — that's what reflectance means.

Visually Confused Words
reluctance
relevance
reactance
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