Wee Willie Winkie investigates light and reflective materials. He chooses the most suitable equipment for going out on a dark night. Wearing reflective materials helps other people to see you in ...

Wee Willie Winkie investigates light and reflective materials. He chooses the most suitable equipment for going out on a dark night. Wearing reflective materials helps other people to see you in ...

Materials with low solar reflectance absorb a larger amount of solar energy, which leads to higher air temperatures and increased energy use. In cities, this contributes to the urban heat island ...