Examples of instantaneous in the following topics:

 Instantaneous velocity is the velocity of an object at a single point in time and space as calculated by the slope of the tangent line.
 One way is to look at our instantaneous velocity , represented by one point on our curvy line of motion graphed with distance vs. time.

 These are two snapshots of the instantaneous displacement of the plane when being driven in one of its modes.

 The instantaneous power of an angularly accelerating body is the torque times the angular velocity: $P = \tau \omega$.

 Perfectly rigid connectors cannot stretch nor deform, and transfer forces instantaneously from one side of the connection to the other.

 We know that the current through an inductor L cannot be turned on or off instantaneously.
 However, this is also not instantaneous, since the inductor opposes the decrease in current by inducing an emf in the same direction as the battery that drove the current.

 The angular velocity describes the speed of rotation and the orientation of the instantaneous axis about which the rotation occurs.

 Energy can enter or leave, but not instantaneously.

 You might think that when something makes a noise that you hear it instantaneously but, in reality, it goes through many steps first.

 Lorentz force f on a charged particle (of charge q) in motion (instantaneous velocity v).

 Emission of a gamma ray from an excited nuclear state typically requires only $10^{12}$ seconds: it is nearly instantaneous.