6 object that do not reflect light?

Objects that do not reflect light are generally referred to as "non-reflective" or "non-reflecting" objects. These objects can absorb or scatter light instead of reflecting it back to our eyes. Here are six examples of non-reflective objects:

1. Black hole: A black hole is a region in space with such strong gravitational pull that not even light can escape it. It absorbs all forms of light, making it completely non-reflective.

2. Vantablack: Vantablack is a synthetic material made of carbon nanotubes. It is considered one of the darkest substances, as it absorbs up to 99.965% of visible light and reflects very little of it.

3. Velvet: Velvet is a type of fabric that has a dense pile or densely tufted cut loops on its surface. Due to the way the fibers are arranged, velvet absorbs light rather than reflecting it, resulting in a non-reflective appearance.

4. Chalkboard: A chalkboard is typically made of a dark-colored surface, such as slate or laminate, that absorbs most of the incident light. When we write with chalk on it, the light gets scattered instead of reflected, making it appear non-reflective.

5. Anodized metal: Anodizing is an electrolytic process used to increase the thickness of the natural oxide layer on the surface of metals like aluminum. This process can produce non-reflective surfaces by altering the metal's ability to reflect light.

6. Charcoal: Charcoal is a porous form of carbon that can be produced by heating wood or other organic materials in the absence of air. Due to its high carbon content and porous structure, it absorbs light and appears non-reflective.

To identify objects that do not reflect light, one can consider their color, texture, and material properties. Dark and matte surfaces tend to absorb light, while highly reflective surfaces, such as mirrors, glass, or metals, reflect it.