There is a breakthrough in experiments studying ultrafast processes. One of the most fundamental processes caused by the light-matter interaction where a light photon causes the ejection of an ...

Using a scanning tunneling microscope equipped with a femtosecond terahertz laser, scientists have exploited the quantum properties of a two-atom hydrogen molecule to observe changes in the ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

A vast star-forming cloud of molecular hydrogen that is one of the largest single structures in the sky has been discovered hidden near the solar system. The crescent-shaped cloud—which its ...