For life is not simply an accumulation of coincidences, achieving meaning through repetition, through echo.

A nice enough idea, sure, but one that began to feel suffocating in its endless repetitions and increasingly strange associations.

This approach enables the generation of attosecond X-ray pulses at terawatt-scale peak power and megahertz repetition rates without reducing the electron bunch charge.

Central to this innovation is the ytterbium thin-disk laser, which produces high-power, femtosecond pulses at megahertz repetition rates.

In lab tests they found that after 4 repetitions, nearly all the DNA in a sample had been divided into the 2 groups.