As for the Little Dipper, it is circumpolar â always above the horizon â as far south as the tropic of Cancer (23.5 degrees north latitude). Stars in the Big Dipper via EarthSky Facebook friend Ken Christison. He captured this photo on September 9, 2013.
dwell time (usually uncountable, plural dwell times) (chiefly engineering) The period of time that a system or element of a system remains in a given state. The drone has a dwell time of about six hours when operating from an in-theater airfield. The part needs a total dwell time in the autoclave of 95 minutes. (military) The duty time soldiers have at their domestic home base between foreign deployments.
What is dwell : Dwell, or dwell time in ignition systems refers to the period of time that the coil is turned on, ie that current is flowing through the primary winding and the magnetic field is building up in the coil.he dwell is set by the relationship of the contact points to the rotating distributor cam and does not vary. The limiting factor is how fast we can reliably open (for a spark) and then close the points to let the coil primary current build up again, points bounce and durability are issues.