Caroline. My poor rose! you are not satisfied with depriving it of colour, but even make it have an aversion to it; and I am unable to contradict you.
Emily. Since dark bodies, absorb more solar rays than light ones, the former should sooner be heated if exposed to the sun?
Mrs. B. And they are found, by experience, to be so. Have you never observed a black dress, to be warmer than a white one?
Emily. Yes, and a white one more dazzling: the black is heated by absorbing the rays, the white is dazzling, by reflecting them.
Caroline. And this was the reason that the brown paper was burnt in the focus of the lens, whilst the white paper exhibited the most luminous spot, but did not take fire.
Mrs. B. It was so. It is now full time to conclude our lesson. At our next meeting, I shall give you a description of the eye.
Questions
1.(Pg. [179]) What is meant by the refraction of light?
2.(Pg. [179]) What is believed to be the cause of refraction?
3.(Pg. [180]) How is a ray refracted in passing obliquely from air into water?