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Montblanc’s new Vintage Pulsographe ($47,200) is a pang of nostalgia for the 1930s, an era when chronographs were practical instruments. During that period, Minerva, whose Villaret-based manufacture is now run by Montblanc, was a specialist in such instruments, like chronograph scales that assisted physicians in quickly measuring the pulse of ...

(PhysOrg.com) -- By taking advantage of the properties of periodic systems, physicists have described how to efficiently time-reverse ultrashort electromagnetic pulses.