e exploded successfully. To mo
st observe
rs the brilliance of the light from t
he explosion--watched through dark glasses--overshado
wed the shock wave and sound that arr
ived later. Many witnesses
remember the sound bouncing off the
mountains creating an echoing effect. Hans Bethe, one of the contributing scientists, wrote "it looked like a giant magnesium flare whic
ed a whole minute but was actually one or two seconds.
The white ball grew and after a few seconds became clouded with dust wh
from the ground and rose and left be
