The viscosity of a non-Newtonian fluid. can generally be affected by the application of. what is called a shear stress. Examples of. shear stresses are squeezing, stirring, agitat-. ing, or applying mechanical pressure to the. surface of a fluid.
A newborn senses all of these tastes except one: Experiments suggest that babies canât taste salt until they are about 4 months old (Beauchamp et al 1986). But newborns love sugar solutions--the sweeter, the better. In fact, when babies are given a sugar solution immediately before a painful procedure--like a heel prick--they cry less. Newborns also seem to like the taste of glutamate, which is found in breast milk (Beauchamp and Pearson 1991).
Once your baby has turned 6-8 months old, with your pediatricianâs consult, you may then begin to offer very small amounts of water. If you think your baby is âthirstyâ and would like a drink, try water. If you decide to offer fruit juice as a âdrinkâ try waiting until baby is at least 8 months old.