Direct signal analysis helps solve 50-year-old problem in molecular fluorescence analysis

Last year, we celebrated 50 years since the first papers on fluorescence correlation spectroscopy (FCS) were published. It ...

Floating electrons on a sea of helium

So how do you get an electron to float on top of helium? To find out, Ars spoke with Johannes Pollanen, the chief scientific officer of EeroQ, the company that accomplished the new work. He said that ...
PBS

Africans in America/Part 4/Frederick Douglass speech

"The Meaning of July Fourth for the Negro" Fellow Citizens, I am not wanting in respect for the fathers of this republic. The signers of the Declaration of Independence were brave men. They were great ...