#rub

We should note that this latter type of shift was successfully amplified to a considerable extent by Russian physicists using the intense light of a ruby laser whose wavelength is close to that of a transition of the potassium atom. ↗

— Alfred Kastler

#atom #close #considerable #extent #intense

There is an electric fire in human nature tending to purify - so that among these human creatures there is continually some birth of new heroism. The pity is that we must wonder at it, as we should at finding a pearl in rubbish. ↗

— John Keats

#birth #continually #creatures #electric #finding

In all these sights I achieve solace only in bringing forth trees, picturing them blooming like smoke from the roofs of gutted buildings, dreaming of what a fine and picturesque pile of rubble this city will someday make. ↗

— Tod Wodicka

#destruction #picturesque #prague #rubble #solace

I think the most interesting parts of human experience might be the sparks that come from that sort of chipping flint of cultures rubbing against each other. And living on the border between Mexico and the U.S. for so many years gave me a lot of insight into that. ↗

— Barbara Kingsolver

#between #border #chipping #come #cultures