Similar to irritated.
A state that has been perturbed, ie, disturbed slightly. Often, the trick is that if you have a state whose time evolution is required, and a very similar state's time evolution is known, then we can try to model it such that the former is a perturbed state of latter and go ahead and solve it, that is , a small disturbance like electric or magnetic field is imparted to the latter state, which makes it the former state. Let me be more explicit, a Hamiltonian H can be considered to be made of 2 parts, H = H0 + delta H , where H0 is a known Hamiltonian, and delta H is a disturbance imparted to it, to make it H. And as I said earlier, typically the disturbance is either an electric field or a magnetic field.
Restoring force, in a physics context, is a variable force that gives rise to an equilibrium in a physical system. If the system is perturbed away from the equilibrium, the restoring force will tend to bring the system back toward equilibrium.
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Impediment
I think you mean 'pertuRbed'. Perturbed means to be anxious or unsettled. We were perturbed by the children's unpredictable behaviour.
Disturbed, agitated, uneasy, troubled.
I was quite perturbed when I saw all the additional fees added to my phone bill.
That is the correct spelling of "perturb" (to upset or imbalance).
Perturbed means feeling anxious, unsettled, or upset about something. It can also refer to being disrupted or altered from a normal state.
Perturbed and annoyed are slightly different in what they mean. Being perturbed means you are upset or anxious and being annoyed means that you are irritated or angry.
"One of my roommates became perturbed by my off-key singing in the shower." "The interuption of my nap left me greatly perturbed." "The gravity of Neptune has perturbed the orbits of several small planetoids."
Perturb means that something is very upsetting. For instance, even though it was raining outside, she didnâ??t let that perturb her.
The girl was really perturbed of the way her dad was reacting with his sickness.
Perturbed.
Similar to irritated.
Worried Anxious Upset Perturbed Troubled Distressed Uneasy Apprehensive Agitated (This is if you want to say something like, "His mother looked concerned.")