Possibly, you are thinking of Alternating Current?
Kinetic energy moves back and forth. This is the energy associated with the motion of an object. For example, a swinging pendulum or a vibrating guitar string demonstrate kinetic energy moving back and forth.
A pendulum swings back and forth rapidly due to gravity and inertia.
AC current moves in a wire by periodically reversing direction, flowing back and forth in response to the alternating voltage source. The electrons in the wire oscillate back and forth, creating an electric field that propagates through the wire and carries the energy along with it.
When you move the magnet back and forth near a coil of wire, it induces an alternating current in the wire. The direction of this induced current changes as the magnet moves due to Faraday's law of electromagnetic induction, which states that changing magnetic fields induce an electromotive force (emf) in a conductor.
It is called vibrations.
Kinetic energy moves back and forth. This is the energy associated with the motion of an object. For example, a swinging pendulum or a vibrating guitar string demonstrate kinetic energy moving back and forth.
something moves back and forth
A pendulum swings back and forth rapidly due to gravity and inertia.
AC current moves in a wire by periodically reversing direction, flowing back and forth in response to the alternating voltage source. The electrons in the wire oscillate back and forth, creating an electric field that propagates through the wire and carries the energy along with it.
When you move the magnet back and forth near a coil of wire, it induces an alternating current in the wire. The direction of this induced current changes as the magnet moves due to Faraday's law of electromagnetic induction, which states that changing magnetic fields induce an electromotive force (emf) in a conductor.
AC (alternative current) goes back and forth (the flow of the current changes periodically) DC (direct current) has a continuous flow
It is called vibrations.
Electromagnetic energy moves back and forth between the Earth and the Sun through radiation. This energy is responsible for heating the Earth's surface and driving atmospheric processes.
The water current that moves sand in a zigzag pattern along a beach is called a longshore current. It is caused by waves breaking at an angle to the shoreline, creating a flow of water parallel to the coast that carries sand particles in a back-and-forth motion.
then the egg will most likely being moving back and forth as well, especially if the chick is almost ready to be hatched
Alternating current.
... Current surges back and forth.