When the shuttlecock is well below net height, players have no choice but to hit upwards.

When the shuttlecock is near to net height, players can hit drives, which travel flat and rapidly over the net into the opponents ' rear midcourt and rearcourt.

When the angular velocity of this co-rotating frame is not constant, that is, for non-circular orbits, other fictitious forces — the Coriolis force and the Euler force — will arise, but can be ignored since they will cancel each other, yielding a net zero acceleration transverse to the moving radial vector, as required by the starting assumption that the vector co-rotates with the planet.

When this field is instead studied using the QED vacuum of quantum electrodynamics, it is seen that the plates do affect the virtual photons which constitute the field, and generate a net force — either an attraction or a repulsion depending on the specific arrangement of the two plates.

When investors and managers perform DCF analysis, the important thing is that the net present value of the decision after discounting all future cash flows at least be positive ( more than zero ).

When the group of covalently bound atoms bears a net charge, the group is referred to more properly as a polyatomic ion or a complex ion.

When light makes multiple reflections between two or more parallel surfaces, the multiple beams of light generally interfere with one another, resulting in net transmission and reflection amplitudes that depend on the light's wavelength.

When diamagnetic material is placed in a magnetic field, a magnetic dipole tends to align itself in opposed polarity to that field, thereby lowering the net field strength.

When the fish are old enough they are freed from the net to mature in the open sea.

When a magnetic field is applied, the dipoles will tend to align with the applied field, resulting in a net magnetic moment in the direction of the applied field.

When an external magnetic field is applied to an assembly of superparamagnetic nanoparticles, their magnetic moments tend to align along the applied field, leading to a net magnetization.

When the net force on the system is zero, the torque measured from any point in space is the same.

When using contracts, a supplier should not try to verify that the contract conditions are satisfied ; the general idea is that code should " fail hard ", with contract verification being the safety net.

When some other piece is chosen it is known as " underpromotion ", and the piece selected is most often a knight, used to execute a checkmate or a fork giving the player a net increase in material compared to promoting to a queen.

When net income is composed of large non-cash items it is considered low quality.

When the disk undergoes a full clockwise revolution, the bicycle wheel will not return to its original position, but will have undergone a net rotation of.

When the membrane is in thermodynamic equilibrium ( i. e., no net flux of ions ), the membrane potential must be equal to the Nernst potential.

When rain came, the swamp overflowed into the ditch, washing Tuna-roa into the meshes of the net.

When a mail server receives a connection from a client, and wishes to check that client against a DNSBL ( let's say, dnsbl. example. net ), it does more or less the following:

When net chloride flows out of the cell, GABA is excitatory or depolarizing ; when the net chloride flows into the cell, GABA is inhibitory or hyperpolarizing.

When the net flow of chloride is close to zero, the action of GABA is shunting.

When the temperatures are the same, no net evaporation of water in air occurs ; thus, there is no cooling effect.

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 oscillating electric currents flow at the correct voltages within radio antennas, radio waves are generated.

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 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.