Definition

The amount of light or radiation that hits a specific area, often measured in watts per square meter or square centimeter.

Example

The irradiance on the solar panel was measured to optimize its energy output.

Conversation

Have you heard about how irradiance affects plant growth?

Yeah, I read that it plays a big role in photosynthesis.

Right? It's interesting how much light intensity can change a plant's health.

Totally! More irradiance usually means better growth for most plants.

Synonyms & Antonyms

Root Explanation

Irradiance → It is formed from "ir-" (meaning not) and "radiance" (from Latin "radiantia", meaning shining or emitting rays). The prefix "ir-" is a variant of "in-", which negates the meaning of the root. Thus, irradiance refers to the quality of emitting light or rays, particularly in a scientific context.

Memory Tip

Think of 'radiance' as shining light, and remember that 'irradiance' refers to the quality of emitting that light.

Visually Confused Words