The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is, whichever is greater, it obtains a difference, or deviation. The guidance subsystem uses deviations to generate corrective commands to drive the missile from a position where it is to a position where it isn't and, arriving at a position where
Deep vein thrombosis (DVT), is the formation of a blood clot in a deep vein, most commonly in the legs or pelvis. A minority of deep vein thrombosis, an estimated 10%, occur in the arms. Symptoms can include pain, swelling, redness, and enlarged veins in the affected area, but some deep vein thrombosis have no symptoms. The most common life-threatening concern with deep vein thrombosis is the potential for a clot t
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