To magnetize an iron nail, one simply has to stroke its surface several times with a bar magnet. Yet, there is a much more unusual method: A team led by the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) ...

This process is repeated several times, whereby the time interval between the first "pump" pulse and the subsequent "probe" pulse is continually extended. As a result, a time series of reflection data ...