A Discourse of the Concave Spherical Mirror by Ibn Al-Haitham
- Kind
- Journal Article
- Date
- 1950
- Publisher
- Journal of the Royal Asiatic Society of Bengal
- Volume / pages
- 16, 2.
- Retrieved
- Sep 3, 2011
1 meme from this reference
Focusing Light Increases Heat Where Focused
The sun's rays proceed from the sun along straight lines and are reflected from every polished object at equal angles, i.e. the reflected ray subtends, together with the line tangential to the polished object which is in the plane of the reflected ray, two equal angles. Hence it follows that the ray reflected from the…