Sending the smoke down 1 m cost 7 Pa of draft — Franklin's stove and the buoyancy budget
·7 min read
The chimney top never moves, yet one descending leg breaks the draft. We write out the buoyancy ledger, then find the fire temperature at which smoke spills into the room.
The Weight Sits on Top and She Still Rights Herself — Metacentric Height and the Free Surface Effect
·8 min read
Whether a floating body capsizes is not decided by where the centre of gravity sits relative to the buoyancy centre. It is decided by the second moment of the waterplane.