A light colored or highly polished metallic surface will reflect a lot of heat (which is primarily infrared radiation). Some people in sunny places put a folding windshield screen up inside their car. The best ones have what looks like shiny aluminum foil on them to reflect the heat.
The shiny surface is a reflector, to reflect the heat outwards towards you.
Example of high friction is a really rough surface like sandpaper.
when light hits a rough surface it scattters.
Reflection of light from a rough surface is known as "Diffused" or "Irregular" reflection, because the light rays are barely seen after the reflection of light from a rough surface.
the moon , frosted glass, aluminium
which is a better reflector of light-a black surface or a white surface
When a rough surface like a road becomes wet, the water fills in the gaps and irregularities in the surface, smoothing it out. The smooth surface of the water reflects more light, making it appear shiny and increasing its reflectivity.
The best reflector for sound will be massive, rigid, and with a smooth surface.
A reflector with a smooth surface is typically known as a specular reflector. This type of reflector reflects light in a single, predictable direction without scattering or diffusing it.
A smooth, shiny surface such as a mirror is the best reflector of radiation as it can bounce light rays off it without absorbing or scattering them. Rough or dark surfaces tend to absorb more radiation than they reflect.
A parabolic reflector is a type of reflector with a smooth surface that can collect and reflect light or sound waves to a single focal point.
For example aluminium.
A convex reflector.
A wet surface reflects light better than a dry surface because water is smooth and acts as a flat, continuous medium. This smoothness reduces the scattering of light, resulting in more efficient reflection. Dry surfaces can be rough, causing light to scatter in various directions rather than being reflected directly.
The rough endoplasmic reticulum has ribosomes on its surface. This is what make is "rough"
The shiny surface is a reflector, to reflect the heat outwards towards you.
Example of high friction is a really rough surface like sandpaper.