In the gaseous phase, vibrational-, rotational- and translational-energy transfer between small molecules can be observed experimentally from time-dependent optical spectra. Populations in the ...

An international team has developed spherical colloidal particles for the visualization of rotational dynamics. The two-color fluorescent particles have an off-center core that allows tracking of ...

This video offers a glimpse of the ultra-precision rotation stages from Physik Instrumente (PI). Part of the structural series UPR-270, these rotation stages are developed for dynamic positioning of ...

The rotation of stars in galaxies such as our Milky Way is puzzling. The orbital speeds of stars should decrease with their distance from the center of the galaxy, but in fact they all have the same ...

Dynamic galaxy: can the rotation of the spiral galaxy NGC 1232 be explained by MOND? (Courtesy: ESO) Can modified Newtonian dynamics (MOND) explain the curious behaviour of rotating galaxies? Two ...