Lami's theorem. (mechanics). When three forces act on a particle in equilibrium, the magnitude of each is proportional to the sine of the angle between the other two. 1  Facebook.
Variable reactions: Brown recluse spider's bite can cause no reaction, a mild reaction, an immediate or a delayed reaction. With a significant reaction a which blister appears after bit. The surrounding skin becomes hard, swollen & can be red, white & blue. A deep lesion can develop which can eat through fat and muscle.
In many cases a brown recluse spider bite will feel like nothing, and the individual may not notice until it is too late. At first the bite will exhibit no serious signs. After a few hours pain and itching may occur. Vomiting, nausea, and fever are all common symptoms associated with a severe brown recluse spider bite.