The energy state of an atom is denoted by its principal quantum number, designated n, which defines the probability of ...

The test subject that produced the first 3D magnetic resonance image was quiet and a bit hairy. Tough on the outside, the patient was a big softie at heart. It was also not human. Nobel Prize-winning ...

The Science History Institute preserves and interprets the history of chemistry, engineering, and the life sciences. During a ceremony in Philadelphia on June 10, the American Chemical Society ...

Science occasionally gives us clearer views of the distant past. This year, researchers opened windows into the life and times of ancient Romans, impressionist painters and other towering historical ...

An exhibit at Philadelphia's Science History Institute looks at food science through the lens of the school lunch program. (Emma Lee/WHYY) From Philly and the Pa. suburbs to South Jersey and Delaware, ...

Why do we think of STEM, history and the arts as separate categories, when each informs and enriches the other? A statue of scientist Joseph Henry stands in Academy Park in Albany. As I walked past a ...

PHILADELPHIA, Pennyslvania (WPVI) -- In Old City, this exhibit is taking us back to school, and back in time. The Science History Institute's newest display discusses the history of lunchtime. "What ...

February 25th is a day just like any other, but it has held a number of major scientific discoveries and innovations through history. Ranging from technologically advanced aircraft carriers to ...