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What is stokes line and anti stokes line in Physics?

In physics, Stokes lines and anti-Stokes lines are lines on a Raman spectrum that correspond to low and high energy shifts, respectively, due to inelastic scattering of light. Stokes lines occur at lower frequencies than the incident light, while anti-Stokes lines occur at higher frequencies than the incident light. These shifts provide information about the vibrational modes in a molecule.


What is the relationship between the energy equation and the Navier-Stokes equations in fluid dynamics?

In fluid dynamics, the energy equation and the Navier-Stokes equations are related because the energy equation describes how energy is transferred within a fluid, while the Navier-Stokes equations govern the motion of the fluid. The energy equation accounts for the effects of viscosity and heat transfer on the fluid flow, which are also considered in the Navier-Stokes equations. Both equations are essential for understanding and predicting the behavior of fluids in various situations.


What are the key assumptions underlying the Navier-Stokes equations?

The key assumptions underlying the Navier-Stokes equations are that the fluid is continuous, incompressible, and viscous. These equations also assume that the flow is steady and that the forces acting on the fluid are balanced.


What is the derivation of Stokes' Law?

Stokes' Law is derived from the balance of forces acting on a small spherical particle moving through a viscous fluid at low Reynolds numbers. The law describes the drag force experienced by the particle as it moves through the fluid.


What is the derivation of Stokes' Law and how does it relate to the motion of small particles in a fluid?

Stokes' Law, derived by Sir George Stokes in the 19th century, describes the drag force experienced by small particles moving through a fluid. It states that the drag force is directly proportional to the particle's velocity and size, as well as the viscosity of the fluid. This law is important in understanding the motion of small particles in a fluid, such as how they settle or move in response to external forces like gravity or fluid flow.