SW Bend residents awaken to small, ‘super-fluky’ fire sparked by concave makeup mirror focusing sunlight on paper bag Bend Fire & Rescue Firefighter could only hold hand in spot of mirror's ...

Scientists have speculated about how Archimedes’ death ray purportedly harnessed sunlight to burn ships. Now, a teen may have evidence the device was plausible.

Scientists have speculated about how Archimedes’ death ray purportedly harnessed sunlight to burn ships. Now, a teen may have evidence the device was plausible.

These bulbs were rigged with small concave mirrors to concentrate light beams onto a marked target. As he added more mirrors, angling them to converge on the same spot, the temperature at the ...

Here, one can see a small concave depression in the surface of an optical fiber. The researchers used a microcavity with two concave mirrors, but this image of a single concave microcavity makes ...

The temperature with three mirrors aimed at the target was almost 110 F (43.4 C), but the addition of a fourth mirror increased the temperature by about 18 F (10 C) to 128 F (53.5 C).