How long does it take to become a psychiatrist? Typically, it takes about 8 years of post-undergraduate study to become a board-certified psychiatrist â 4 years to complete your M.D. degree plus another 4 years of residency.
âOobleck,â named for the mysterious green substance described in the Dr. Seuss classic Bartholomew and the Oobleck, is a non-newtonian fluid meaning it doesnât follow Newtonâs laws of motion. A non-newtonian fluid (like oobleck or silly putty) has a different viscosity depending on the force applied. By contrast, newtonian fluids (like water) have a constant viscosity at a given temperature. No matter how fast you stir them they never get thicker or thinner. Oobleck is a mixture of cornstarch and water.
But dip your hand slowly into the mix, and see what happensâyour fingers slide in as easily as through water. Moving slowly gives the cornstarch particles time to move out of the way. Oobleck and other pressure-dependent substances (such as Silly Putty and quicksand) are not liquids such as water or oil. They are known as non-Newtonian fluids. This substance's funny name comes from a Dr. Seuss book called Bartholomew and the Oobleck.