As light passes through air and into another clear material (such as glass), it changes speed, and light is both reflected and refracted by the glass. This results in us seeing the glass because it reflects and refracts light differently than the air around it does.
As light passes through air and into another clear material ( such as glass) , it changes speed, and light is both reflected and refracted by glass. This results in us seeing the glass because it reflects and refracts light differently than the air around it does.
