The wing would have been a severe obstruction to apprehension of an object on the ground. ( 1 law) The act of seizing or taking by legal process; arrest. 2  1855, Elizabeth Gaskell, North and South, ch.  The warrant had been issued for his apprehension on the charge of rioting. The act of grasping with the intellect; the contemplation of things, without affirming, denying, or passing any judgment; intellection; perception.
Shocking your pool at the correct time can make a big difference to your pool. If you shock your swimming pool mid day in the middle of the direct sun the swimming pool shock will burn out of the pool faster. The best time to shock the swimming pool is after the sun goes down. Shocking the pool after the direct sunlight has passed over the pool is the best time to shock your pool.
Shock Your Pool. While under normal conditions you want to be sure you keep your chlorine levels at around 1 -3 ppm, you should also shock your pool to be sure you kill off any bacteria or algae that might grow. How often you do this depends on the area in which you live and how often you use the pool. At a minimum you should shock your pool every month but if you get a lot of rain or it is especially hot you may want to consider shocking it every week or every two weeks.