In meteorology, the term isotherm refers to a contour line that connects points on a weather map that have equal temperatures at a given time. Just as contour lines on topographical maps are used to show gradients of elevation, isotherms are used to show gradients of temperature. Isotherms usually are shown in five- or 10-degree intervals on maps. The temperature differences they delineate are often indicated by different colors. The curve of an isotherm is shaped by variations in temperature across the area being mapped.
Biotin is vital to cell proliferation, which is why it is a valuable tool in hair growth. When ingested, biotin reacts with cell enzymes and plays a vital part in producing amino acids, which are the building blocks of protein.
Biotin is a popular supplement for hair, skin, and fingernails, though there is little evidence to suggest that taking biotin supplements can stop hair loss or stimulate hair or nail growth. Similarly, using biotin shampoo or other hair products is unlikely to produce any benefit.: Biotin is a water soluble B-vitamin (B7). It is essential for good nail and hair growth. Biotin is involved the biochemical metabolism of proteins, carbohydrates and fats into energy. It also plays a part in the synthesis of fatty acids.