Education, self-education and personal growth - methods, lessons

Daniel Bell (born May 10, 1919, New York, New York, USA - died January 25, 2011, Cambridge, Massachusetts) was an American sociologist and journalist who used sociological theory to reconcile what , in his opinion, were the inherent contradictions of capitalist societies. He introduced the concept of a mixed economy, combining private and public elements

Mechanical devices are often used in human activities. The reliability of moving parts in any mechanism is ensured by reducing friction and deformation. For this, special materials called antifriction are used. Their main purpose is to reduce the coefficient of friction, facilitating the sliding of the moving surfaces of mechanisms. This article will consider the anti-friction properties of various materials used for these purposes

Nickel silver is a metallic alloy consisting predominantly of copper with additions of nickel and zinc. In some way, it is an analogue of an older alloy of the same composition - cupronickel, but cheaper than it. Nickel silver is used to make parts of measuring instruments, medical instruments, jewelry, cutlery and much more

At the end of the 19th century, a theory was formulated, the authors of which were not familiar with each other, but at the same time came to the same conclusion. They were William James and Carl Lange. Their theory described emotions and corresponding manifestations in a person. What are scientists talking about? How can the knowledge described in this theory be applied?