## Daniel Bernoulli

His discovery was the first time that an analysis of water flowing from a hole in a container was correct. His discovery was that, as iterated above, that a rise in pressure would cause a decrease in speed and a decrease in pressure would cause an increase in speed. Bernoulli largely created his principal based on the theory of conservation of energy. (The law of conservation of energy states that energy can be neither created nor destroyed, and therefore the sum of all the forms of energy in the system is constant.) He used the conservation of energy as well as pumps and other machines that are used to raise water to come up with this principle.Daniel Bernoulli (1700-82), son of Johann I, was born on Groningen, Netherlands. Of all the Bernoullis, he was perhaps the greatest mathematician. Daniel also had the widest interests which includes medicine, biology, physics, mechanics, and astronomy. Daniel originally planned a career business and medicine. Like other family members, however, he was drawn to the field of mathematics. Between 1725 and 1732, he taught mathematics at the Academy of Science in St. Petersburg, Russia. He then went to the University of Basel, where he taught anatomy, botany and then physics. Daniel's most important work was in mechanics. He was the founder of the science of hydrodynamics, the study of moving fluids. One of his main contributions in this area is Bernoulli's Principle, which states that the pressure in a fluid decreases as its velocity, or speed, increases. Daniel is also noted for his work in calculus and probability theory, especially as it applies to games. He's also considered one of the founders of the kinetic theory of gases, which helps explain the property and behavior of gases. Between 1725 and 1749, Daniel won many prizes for his work on astronomy, gravity, tides, magnetism, and ocean currents.