Water flows into a sealed inner cone filled with quicklime, which is mostly calcium oxide.

The inner cone was irregular and poorly defined.

Adjust the flame until the inner blue cone is 1 to 1 1/2 inches long.

Replies: The inner blue cone, whereby the upper tip is the hotest point.

The inner cone is not solid, but has a slot cut through the center to form another section of waveguide.

The inner cone is allowed to rotate within the outer.

As the inner cone rotates, the total signal length changes, more at the wide end than the narrow.

The inner cone is where the acetylene and the oxygen combine.

The tip of this inner cone is the hottest part of the flame.

And there - not large yet wonderfully sinister - was the active inner cone.