Now, scientists are using lasers to photograph events with shutter speeds measured in femtoseconds and attoseconds. How fast is that? I’m not a scientist, but I sometimes play one on this blog, so here’s the math: A millisecond is 10 to the minus 3rd degree. A microsecond is 10 to the minus 6th degree. A nanosecond is 10 to the minus 9th degree. A femtosecond is 10 to the minus 15th degree. And an attosecond is 10 to the minus 18th degree.