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.
All salts usually have additives in them that can break down over time: Table salt (NaCl) has iodine in it which breaks down. Many times moisture from the air contributes to changes in the long run. MgSO4 (epsom salt) likes to absorb water from the surrounding air. Once it does sufficiently, you will notice over time that it clumps together and forms nodules. If you see this, you can say that it has expired in a sense, it is not the same stuff as the day you bought it.