3 ms·
See also https://en.m.wikipedia.org/wiki/Kugelblitz_(astrophysics) https://en.m.wikipedia.org/wiki/Kugelblitz_(astrophysics)
by ars 5y ago
See also https://en.m.wikipedia.org/wiki/Kugelblitz_(astrophysics) https://en.m.wikipedia.org/wiki/Kugelblitz_(astrophysics)