When the car is moving to the left, each successive wave is emitted from a position further to the left than the previous wave.

When the source of the waves is moving toward the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave.

When considered as particles, they are known as photons, and each has an energy related to the frequency of the wave given by Planck's relation E

When the antidromic stimulus reaches the motor neuron cell bodies, a small portion of the motor neurons backfire and orthodromic wave travels back down the nerve towards the muscle.

When pushed all the way in, the specified component wave form becomes absent from the mix.

When the modulation rate is on time scales much slower than the cavity lifetime and the time period over which energy can be stored in the lasing medium or pumping mechanism, then it is still classified as a " modulated " or " pulsed " continuous wave laser.

When a full tank was opened, the wave of water sluiced away the overburden to expose the bedrock underneath and any gold veins.

When it was found in 1900 by Max Planck that the energy of waves could be described as consisting of small packets or " quanta ", Albert Einstein further developed this idea to show that an electromagnetic wave such as light could be described as a particle ( later called the photon ) with a discrete quantum of energy that was dependent on its frequency.

When more than one person uses the same craft to ride a wave together, it is known as " tandem " surfing.

When Sentaro was in danger, Skuld created a huge wave which saved him, although Urd, who was nearby, stated that it would have caused a huge flood if she hadn't been there to help contain it.

When the wave enters shallow water, it slows down and its amplitude ( height ) increases.

When the tsunami's wave peak reaches the shore, the resulting temporary rise in sea level is termed run up.

When viewed through this formalism, the measurement of the wave function will randomly " collapse ", or rather " decohere ", to a sharply peaked function at some location.

When the wave reaches the end of the line, in general, there will be a reflected wave which travels back along the line in the opposite direction.

When this wave reaches the source, it adds to the transmitted wave and the ratio of the voltage and current at the input to the line will no longer be the characteristic impedance.

When using this convention, left or right handedness is determined by pointing one's left or right thumb away from the source, in the same direction that the wave is propagating, and matching the curling of one's fingers to the direction of the temporal rotation of the field at a given point in space.

When determining if the wave is clockwise or counter-clockwise circularly polarized, one again takes the point of view of the source, and while looking away from the source and in the same direction of the wave ’ s propagation, one observes the direction of the field ’ s temporal rotation.

When words can be used in a more fresh and primitive way so that they strike with the force of sights and sounds, when tones of sound and colors of paint and the carven shape all strike the sensibilities with an undeniable force of data in and of themselves, compelling the observer into an attitude of attention, all this imitates the way experience itself in its deepest character strikes upon the door of consciousness and clamors for entrance.

When the plague strikes, he finds himself trapped in a city with which he feels he has no connection.

When Young's career began, pitchers delivered the baseball underhand and fouls were not counted as strikes.

When the key is pressed, the tangent strikes the strings above, causing them to sound in a similar fashion to the hammering technique on a guitar.

When light strikes a material, most of the light is absorbed while a smaller amount of a particular frequency or wavelength is reflected.

When the hammer strikes, the head gets stopped by an opposite force coming from the target ; which is equal and opposite to the force applied by the head to the target.

When the colonial administration rejected the People's Assembly's recommendations, Nkrumah organized a " Positive Action " campaign on 01 January 1950, including civil disobedience, non-cooperation, boycotts, and strikes.

When ionizing radiation strikes a semiconductor, it may excite an electron out of its energy level and consequently leave a hole.

When a returning reflection strikes another discontinuity, some of the signal rebounds in the original signal direction, creating multiple echo effects.

When a photon of sufficient energy strikes the diode, it excites an electron, thereby creating a free electron ( and a positively charged electron hole ).

When the second mallet strikes the bar the first mallet is removed.

When a hollow-point hunting bullet strikes a soft target, the pressure created in the pit forces the material ( usually lead ) around the inside edge to expand outwards, increasing the axial diameter of the projectile as it passes through.

When Perseus arrives in Larissa, he participates in some funeral games and accidentally strikes Acrisius on the head with a discus, killing him and fulfilling the prophecy.

When ionizing radiation strikes the tube, some of the molecules of the fill gas are ionized, either directly by the incident radiation or indirectly by means of secondary electrons produced in the walls of the tube.

When Hymir refuses to provide Thor with bait, Thor strikes the head off Hymir's largest ox to use as his bait.

When whites used economic retaliation local Blacks seeking school integration in 1956 after the US Supreme Court ruling declaring segregation in public schools to be unconstitutional, students came to their support with hunger strikes, boycotts, and mass marches.

When Perry took over in 1994, the Bosnian Serbs were besieging Sarajevo, the Bosnian capital, but the Serbs were forced to draw back in face of a UN ultimatum and warning of air strikes.

When a clavichord key is pressed, a small metal tangent strikes a string and remains in contact with it for as long as the key is held down.

When the fee goes up to two bars, Farwell strikes DeCruz with the gold bricks, killing him.

When the UV photon strikes a phosphor molecule, it momentarily raises the energy level of an outer orbit electron in the phosphor molecule, moving the electron from a stable to an unstable state ; the electron then sheds the excess energy as a photon at a lower energy level than UV light ; the lower energy photons are mostly in the infrared range but about 40 % are in the visible light range.

When a bowler bowls two strikes in succession, within a game, the bowler has scored a " double ".

When a bowler bowls three strikes in succession, within a game, the bowler has scored a " triple " ( also called a " turkey ").

When light strikes a charged photocathode plate, electrons are emitted through a vacuum tube that strike the microchannel plate that cause the image screen to illuminate with a picture in the same pattern as the light that strikes the photocathode, and is on a frequency that the human eye can see.

When subjected to an electromagnetic field the paramagnetic particles change spacing, modifying their color and reflective properties.

When Louise goes below deck momentarily, a large, strange cloud on the horizon passes over the craft, leaving a reflective mist on Scott's bare skin.

When Kate tells Durant, he removes the reflective faceplate from a " robot " to reveal the face of a crew member.

When a longitudinal sound wave strikes a flat surface, sound is reflected in a coherent manner provided that the dimension of the reflective surface is large compared to the wavelength of the sound.

When the mirror was placed in the same position as the original plate of glass, the reflective part blocked a portion of the miniature building behind it and also reflected the stage behind the camera.

When criticised for composing a light-hearted, and sometimes reflective work rather than a sombre one, for such a sombre topic, Ravel replied: " The dead are sad enough, in their eternal silence.

When the liquid is pumped out, the glass turns retro reflective again.

When worn with a helmet cover, the PASGT helmet is also often fitted with a band around it that has two reflective patches ( sometimes known as cat eyes ) on the rear intended to reduce friendly fire incidents.

When these are later peeled off the plate, they retain a highly reflective gloss.

When the silver reaches the aluminium, an electric short circuit forms, and galvanic corrosion then rapidly degrades the reflective layers.

When it was rediscovered in the late 1960s, it was considered remarkably modern and reflective of the pathfinding style in which Langgaard composed.

When a beam intersects with a reflective or refractive polygon, a new beam is created in a similar fashion to ray-tracing.