Imaging the brains of birds with picosecond optical tomography gives scientists a fascinating look into how these animals respond to calls and songs—and insight into how the technology could be applied to humans.
OSA fellow and U.S. Army Colonel Barry Shoop describes his recent experience helping to establish the National Military Academy of Afghanistan, which is designed to build expertise in engineering and train officers to support and defend the country's new constitution.
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Daniel Dawes, "Lasers and the Fine Art of Art Conservation," Optics & Photonics News 15(9), 16-19 (2004) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Periodic structures, such as those found in photonic crystals, can generate iridescent colors. They allow some objects in nature, including opals, to display gleaming colors, even in the absence of pigment. Electromagnetic theory allows the phenomenon to be investigated through modeling.
Galileo's use of mathematics to predict experimental results is considered a cornerstone of modern science. He made significant contributions to the physical sciences, and his defense of the Copernican system brought him into conflict with the Catholic Church, which found him guilty of heresy, banned his works in 1633 and placed him under house arrest.
