Bernoulli, Daniel (February 8, 1700 - March 17, 1782) is the most distinguished of the second generation of the Bernoulli family of Swiss mathematicians. He was a Swiss physicist and mathematician who made important discoveries in hydrodynamics. He was the only member of his family to make a mark in physics. He investigated not only mathematic but also such fields as medicine, biology, physiology, mechanics, physics, astronomy, and oceanography. Bernoulli's theorem, which he derived, is named after him.
Daniel Bernoulli was the second son of Johann Bernoulli, who first taught him mathematics. After studying philosophy, logic, and medicine at the Universities of Heidelberg, Strasbourg, and Basel, he received an M.D. degree (1721); and in 1723-24 he wrote Exercitationes quaedam Mathematicae on differential equations and the physics of flowing water, which won him a position at the influential Academy of Sciences in St. Petersburg, Russia. Bernoulli lectured there until 1732 in medicine, mechanics, and physics, and he researched the properties of vibrating and rotating bodies and contributed to probability theory. In that same year he returned to Basel to accept the post in anatomy and botany. By then he was widely esteemed by scholars and also admired by the public.
Daniel's reputation was established in 1738 with Hydrodynamica, in which he considered the properties of basic importance in fluid flow, particularly pressure, density, and velocity, and set forth their fundamental relationship. The Hydrodynamica is both a theoretical and a practical study of equilibrium, pressure and velocity of fluids. He put forward what is called Bernoulli's principle, which states that the pressure in a fluid decreases as its velocity increases. He also established the basis for the kinetic theory of gases and heat by demonstrating that the impact of molecules on a surface would explain pressure and that, assuming the constant, random motion of molecules, pressure and motion increase with temperature.
Bernoulli's Principle Many times I have found myself watching a baseball game and wondering, "Why does the ball curve?" ... An eighteenth century scientist, named Daniel Bernoulli, devised Bernoulli's Principle. ... This is due to Bernoulli's Principle. ... Bernoulli's Principle can easily be seen through a venturi Tube. ... This is how a venturi tube can prove Bernoulli's principle. ...
Bernoulli's principle was an early formulation of the subsequent idea ofthe conservation of energy?. ... Bernoulli thought of thecorpuscles? ... Bernoulli's principle was centerd around the notion that we suppose a small portion of liquid flow from one point to another point, and that change of position is affected without incurring any waste of energy. From the principle of conservation of energy, it may be asserted that the total energy is not changed during the displacement. ... Bernoulli's foregoing principle explains a number of phenomena about the behavior of li...
How do Planes and Helicopters Fly? How do planes and helicopters fly? With the tremendous weight of an aircraft, one might conclude that sheer magic must surely be at work. But in fact, there are many solid principles that explain this magical phenomenon. We owe our understanding of these...
To better understand why the pressures acting on an airfoil can leave the state of equilibrium we will refer to a principle discovered by a Swiss physicist. Daniel Bernoulli, the man for which Bernoulli's Principle is named, made a discovery which aviation is dependent upon. His principle simply says that, "as the velocity of a fluid increases, its internal pressure decreases" ("Private," 1996, p. 17). ... Bernoulli's findings allowed engineers to manipulate the shape of an airfoil in order to create these unequal pressures. ...
Leibniz's students, the Swiss Bernoulli brothers, used calculus to solve this and other problems, such as finding the curve of quickest descent connecting two given points in a vertical plane. In the 18th century, the great Swiss-Russian mathematician Leonard Euler, who had studied with Johann Bernoulli, wrote his Introduction to the Analysis of Infinites, which summarized known results and also contained much new material, such as a strictly analytic treatment of trigonometric and exponential functions. ...
He is known for his formulation of a hydrostatic principle and a device for raising water still uses for developing countries known as Archimedes screw. ... Archimedes principle indicates that the upward buoyant force that is exerted on a body immersed in a fluid whether fully or partially submerged is equal to the weight of the fluid that the body displaces. ...
