Mathematica can be used to increase the precision of your measurements of the time delays. called sound analysis.nb shows examples using some of the commands below. You should save your les as .wav les from audacity, using Export. microphones. supplied equipment. a value for the speed of sound in air.
exists and is an alternate of . Making the world better, one answer at a time. After blood clots, the fluid that remains is referred to as serum. Plasma is the fluid portion of the blood before clotting or in the presence of an anticoagulant. SerumAfter blood clots, the fluid that remains is referred to as serum.
Generally blood doesn't clot after death : Within about 60 minutes after death , blood can not clot . This is due to the fact that vessels mainly capillaries after death release chemicals called fibrinolysins . So fluidity of blood is a common finding at many autopsies . It is however claimed that deaths that occur due to lack of oxygen (asphyxial deaths) remain liquid for longer period of time .