Book, Paragraph

 1  II,  9|            to explain lightning and thunder, and further whirlwind,
 2  II,  9|           collision is what we call thunder. This collision is analogous,
 3  II,  9|       impact on dense clouds causes thunder: the variety of the sound
 4  II,  9|          interrupted. This then, is thunder, and this its cause.~It
 5  II,  9|         after the collision and the thunder, though we see it earlier
 6  II,  9|             gleam of this fire, and thunder the hissing noise of its
 7  II,  9|      lightning actually is prior to thunder and does not merely appear
 8  II,  9|          most careless explanation. Thunder, lightning, and the rest
 9  II,  9|      concretions in the same way as thunder and lightning are discretions,
10  II,  9|            theories of others about thunder and lightning: some maintaining
11  II,  9|       shining through the cloud and thunder its extinction, the fire
12  II,  9|         under it, and in the clouds thunder. The essential constituent
13  II,  9|            it is ejected and causes thunder and lightning and the other
14  II,  9|            same nature.~So much for thunder and lightning.~
15 III,  1| constitution rare, it gives rise to thunder and lightning. But if it
16 III,  1|          falls on the object first. Thunder, too, splits things not
17 III,  1|          all.~We have now explained thunder and lightning and hurricane,