the period of time, the sidereal day, during which the earth makes one complete revolution on its axis relative to a particular star. The mean sidereal day lasts 23 hours 56 minutes 4.1 seconds of the mean solar day.
In this corner: a vent stack is series of vertical pipe vents that passes through at least two stories and is meant to maintain atmospheric pressure in the drainage system. The vent stack usually runs parallel with the soil/waste stack and may either extend up through the roof or connect to a stack vent. And in this corner: a stack vent is the uppermost portion of a soil/waste stack that continues the pipe from above the highest connected fixture out the roof.
Smokers are designed with vents on both the top and bottom of the smoker unit. Typically, the bottom vents are used to fan or fuel the flame inside. Adjusting the bottom vent either flames your fire or smolders it. The top vents are the ones that are typically used to control the heat inside the smoker. The more you open the vents, the more heat will escape out. The tighter you keep them closed, the more the heat will remain inside the smoking unit. 3 people found this useful.