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.
The dwell time is chosen based on the type of penetrant used, the material being tested, the flaws that are suspect, and even specific test conditions such as temperature.The emulsifier dwell time is extremely critical, especially when attempting to locate shallow or very small flaws.his particular group of discontinuity lends itself well to the Liquid Penetrant Inspection method. This is due to the fact that most service flaws are open to the surface of the component or material under evaluation.