1636 The Chronicles of Dr. Gribbleflotz by Kerryn Offord, RickBoatright 528 Pages, Published 2016 by Baen Books ISBN-13: 978-1-62579-516-8, ISBN: 1-62579-516-5
"“No, it can't,” Phillip agreed. “It isn't hot enough. However, a sufficiently large
cannonball hitting a barrel of gunpowder can easily turn it into a cloud of dust and
stave pieces.” “How does a cloud of dust cause an explosion?” Phillip looked
around his laboratory. “Get that stool and place it in the middle of the room.”
While Johann was moving the stool, Phillip opened a clay pot and measured
some fine black powder onto a sheet ..."