When such bodies are subjected to a sinusoidally oscillating stress, the strain is neither exactly in phase with the stress ( as it would be for a perfectly elastic solid ) nor 90 degrees out of phase ( as it would be for a perfectly viscous liquid ) but rather exhibits a strain that lags the stress at a value between zero and 90 degrees: i. e., Some of the energy is stored and recovered in each cycle, and some is dissipated as heat.

When designing objects, Engineers must ensure the mechanical resonance frequencies of the component parts do not match driving vibrational frequencies of motors or other oscillating parts, a phenomenon known as resonance disaster.

An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, consists of an inductor, represented by the letter L, and a capacitor, represented by the letter C. When connected together, they can act as an electrical resonator, an electrical analogue of a tuning fork, storing energy oscillating at the circuit's resonant frequency.

When a high voltage from an induction coil was applied to one tuned circuit, creating sparks and thus oscillating currents, sparks were excited in the other tuned circuit only when the circuits were adjusted to resonance.

When a metal wire is subjected to electric force applied on its opposite ends, these free electrons rush in the direction of the force, thus forming what we call an electric current.

When a metal wire is connected across the two terminals of a DC voltage source such as a battery, the source places an electric field across the conductor.

When placed in an electric or magnetic field, equal but opposite forces arise on each side of the dipole creating a torque τ:

When any wire ( or other conducting object such as an antenna ) conducts alternating current, electromagnetic radiation is propagated at the same frequency as the electric current.

When EM radiation at the frequences for which it is referred to as " radio waves " impinges upon a conductor, it couples to the conductor, travels along it, and induces an electric current on the surface of the conductor by moving the electrons of the conducting material in correlated bunches of charge.

When the net electric charge of an object is non-zero and motionless, the phenomenon is known as static electricity.

When a pedal is off or inactive, the electric audio signal coming in to the pedal is diverted onto a " bypass ", resulting in a " dry " signal which continues on to other effects down the chain.

When Godzilla tries to kill Kong with his atomic breath, an electrical storm arrives and revives Kong, giving him the power of an electric grasp.

When the electric current is applied, the larger molecules move more slowly through the gel while the smaller molecules move faster.

When the electric field applied across an insulating substance exceeds in any location the threshold breakdown field for that substance, the insulator suddenly becomes a conductor, causing a large increase in current, an electric arc through the substance.

When asked why he didn't name the album " Electric Church " instead of " Electric Ladyland ", Hendrix said some ladies were " electric too ".

When guitarist Charlie Christian used the amplified electric guitar to improvise horn-like, single-line melodies in the jazz context, jazz and blues musicians became interested in the potential of the louder, new electric guitar.

When voltage is applied, the liquid crystals shift to a tilted position allowing light to pass through and create a gray-scale display depending on the amount of tilt generated by the electric field.

When physical chemist Richard Williams applied an electric field to a thin layer of a nematic liquid crystal at 125 ° C, he observed the formation of a regular pattern that he called domains ( now known as Williams Domains ).

When an external electric field is applied to the liquid crystal, the dipole molecules tend to orient themselves along the direction of the field.

When an electric field is applied to the LC layer, the long molecular axes tend to align parallel to the electric field thus gradually untwisting in the center of the liquid crystal layer.

When Guericke held his hand against the ball and turned the shaft quickly, a static electric charge built up.

When the prototype electric pickup they were developing finally worked to his satisfaction, Beauchamp asked former National shop craftsman Harry Watson to make a wooden neck and body to which the electronics could be attached.

When an electric current is passed through the coil it generates a magnetic field that activates the armature, and the consequent movement of the movable contact ( s ) either makes or breaks ( depending upon construction ) a connection with a fixed contact.

When they employed them in parallel connected electric distribution systems, closed-core transformers finally made it technically and economically feasible to provide electric power for lighting in homes, businesses and public spaces.

When South America became attached to North America creating the Isthmus of Panama, the Arctic region cooled due to the strengthening of the Humboldt and Gulf Stream currents, eventually leading to the glaciations of the Pleistocene ice age, the current interglacial of which is the Holocene Epoch.

When the circuit is solved, the circuit element currents may have positive or negative values.

When inserted together with a galvanometer, into a tuned electrical circuit, it could be used as a very sensitive rectifying detector of high frequency wireless currents, known as radio waves.

* When working with continuous currents, the passage of a strong current lowers the resistance of the body for feeble currents.

When very large fault currents are injected into the earth, the area around the point of injection may rise to a high potential with respect to distant points.

When the bottom of the sea has a small inclination, for example at the continental slopes, the sedimentary cover can become unstable, causing turbidity currents.

When two Ocean current | currents collide, they create eddies.

When they strike the antenna of a radio receiver, the waves excite similar ( but less powerful ) radio frequency currents in it.

When one inductor is closely coupled to another inductor through mutual inductance, such as in a transformer, the voltages, currents, and number of turns can be related in the following way:

When the currents from all these atoms are put together, they create the same effect as a macroscopic current, circulating perpetually around the magnetized object.

When ideas of democracy spread and national currents emerged from ca.

When paddling downstream paddlers can use some advanced paddle strokes along with differing currents to quickly turn their boat, one of these strokes is the duffek.

When a paddler moves from one of these currents to the other they can use the duffek stroke to quickly turn their boat into the direction of the current.

When released by devices on the ground, the fine particles are carried downwind and upwards by air currents after release.

When this bend brings the currents into more perpendicular contact with the shore it can amplify the surge, and when it bends the current away from the shore it has the effect of lessening the surge.

When a high voltage is applied across the surface, leakage currents may cause localized heating and progressive degradation and charring of the underlying material.

When the Natives are ready, Canopus impose a " Lock " on Rohanda that links it via " astral currents " to the harmony and strength of the Canopean Empire.

When ideas of democracy spread and national currents emerged about 1820, identification was mixed between Danish and German.

When the displacement currents are included, Kirchhoff's current law once again holds.

When X < sub > L </ sub > equals X < sub > C </ sub >, the reactive branch currents are equal and opposite.

When a time-varying electric current is passed through the coil, it creates a time-varying magnetic field around it, which in turn induces azimuthal electric currents in the rarefied gas, leading to the formation of a plasma.

When Diana entered the southern Gulf of Mexico, the trough of low pressure in that vicinity weakened and steering currents caused the storm to head westward.