Rules for obtaining images formed by concave mirror. Rule 1: When a ray of light which is parallel to the principal axis gets reflected, it passes through its focus. Rule 2: ...

In a typical Schlieren imaging set-up, a source directs light onto a long radius concave spherical mirror, which collimates the light and redirects it onto a second identical mirror. The resultant ...

Turning life upside down: Artist creates fantastical landscape with giant concave mirror . By DAILY MAIL REPORTER Updated: 20:06 EDT, 4 May 2009 ...