Friction friction and wear in so-called self-lubricating materials. Fluid friction occurs between fluid layers that are moving relative to each other. This internal resistance to flow is named "viscosity". In everyday terms, the viscosity of a fluid is described as its "thickness". Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. The less viscous the fluid, the greater its ease of deformation or movement. All real fluids (except superfluids) offer some resistance to shearing and therefore are viscous. For teaching and explanatory purposes it is helpful to use the concept of an inviscid fluid
God Makes the Rivers to Flow God Makes the Rivers to Flow God Makes the Rivers to Flow is an anthology of spiritual texts for use in meditation, assembled by Eknath Easwaran. Condensed versions have been published under the titles Timeless Wisdom (book) and Sacred Literature of the World (audio recording). First published as a book in the US in 1982, progressively enlarged or revised versions of "God Makes the Rivers to Flow" were also issued in the US in 1991, 2003, and 2009. English editions have been published in India, and a French edition has been published. The book has been reviewed in newspapers, magazines,