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rohit199622
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when we need to find the direction of radial velocity should we move our right hand from the omega (angular frequency) vector to the radius vector ?or opposite ?
rohit199622 said:when we need to find the direction of radial velocity should we move our right hand from the omega (angular frequency) vector to the radius vector ?or opposite ?
WannabeNewton said:I believe rohit is referring to the following equation from rigid body dynamics: ##\mathbf{v} = \boldsymbol{\omega}\times \mathbf{r}##.
wannabeNewton said:i believe rohit is referring to the following equation from rigid body dynamics: ##\mathbf{v} = \boldsymbol{\omega}\times \mathbf{r}##. In this case, if you want to use the right-hand rule, you would point your fingers in the direction of the angular velocity and curl them towards the position vector.
The direction of radial velocity refers to the direction in which an object is moving towards or away from an observer. It is measured along the line of sight between the observer and the object.
The direction of radial velocity is measured using the Doppler effect, which causes a shift in the wavelength of light emitted by an object depending on its relative motion towards or away from the observer.
Knowing the direction of radial velocity is important in understanding the motion and behavior of celestial objects such as stars and galaxies. It can provide valuable information about the structure and dynamics of these objects.
Yes, the direction of radial velocity can change over time as the relative motion between the observer and the object changes. This can be due to factors such as the object's orbit, gravitational interactions, or its own motion through space.
The direction of radial velocity is used in astronomy to study the movement and distribution of celestial objects. It is also used to identify and characterize planets, exoplanets, and other objects in our universe.