Meet the Library of Congress Packard Campus’ archives technicians who store and care for old photos and reels of film from more than a century ago.

The Moshe Chaim Luzzatto letter was sold by the Jewish Theological Seminary during a financial crisis, a move that drew criticism from scholars and rare-book experts.

Optical materials are substances used to manipulate the flow of light. This can include reflecting, absorbing, focusing or splitting an optical beam. The efficiency of a specific material at each task ...

Learn everything you need to know about Vanguard Materials ETF (VAW) and how it ranks compared to other funds. Research performance, expense ratio, holdings, and volatility to see if it's the right ...

Laser material processing uses high-intensity light beams in material fabrication. This can include cutting, engraving, drilling or welding metals. It can also include cleaning materials with lasers.