> For the complete documentation index, see [llms.txt](https://help.manu.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.manu.co/learn/manual/materials/texture-maps/metalness.md).

# Metalness

Metalness map defines the areas on the material that behave like a metal and non-metal. The metalness map determines which type of reflection on the material is (dielectric or metallic). Metalness affects the ability of the metal to reflect light, as well as the ability to absorb light that shines on the material.

All objects in the world are divided into dielectrics (insulators) and metals.

Dielectrics (for example, plastic) absorb light partially, and some of the light is reflected. Dielectrics always reflect the same light that is shone on them. Metals do not transmit light, but reflect it, partially or completely. We  can see a colored glare, where the light is reflected on the object. This glare has  the color of the metal (for example, copper, gold). Dielectrics also reflect light, but in much smaller quantities than metals.

<figure><img src="/files/xowwbdXV2jvvkeAGPHYg" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://help.manu.co/learn/manual/materials/texture-maps/metalness.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.