When looking for a long-term partner more conventional altruism may be preferred which may indicate that he is also willing to share resources with her and her children while when looking for a short-term partner heroic risk-taking, which may be costly signal showing good genes, may be more preferable.

When the Israelites, led by Joshua toward the Promised Land, arrived at the banks of the River Jordan, the Ark was carried in the lead preceding the people and was the signal for their advance ( Joshua 3: 3, 6 ).

When compressed, the crystal produces a small electrical current, so when placed under the bridge saddle, the vibrations of the strings through the saddle, and of the body of the instrument, are converted to a weak electrical signal.

When analog television was developed, no affordable technology for storing any video signals existed ; the luminance signal has to be generated and transmitted at the same time at which it is displayed on the CRT.

When gastric hydrochloric acid reaches the nerves in the gastrointestinal mucosa, they signal pain to the central nervous system.

When the signal drive to the amplifier is increased, the output also increases until a point is reached where some part of the amplifier becomes saturated and cannot produce any more output ; this is called clipping, and results in distortion.

When conjugation is initiated by a signal the relaxase enzyme creates a nick in one of the strands of the conjugative plasmid at the oriT.

When the Laplace transform is performed on a discrete-time signal ( with each element of the discrete-time sequence attached to a correspondingly delayed unit impulse ), the result is precisely the Z transform of the discrete-time sequence with the substitution of

When the key was not in use, that switch was kept closed, so that a signal was continually sent.

When she was half a mile away, Baralong ran up a signal flag indicating that she was going to rescue Nicosians crew.

When Datis surrendered and was ready for retreat, the Ionians climbed the trees and gave the Athenians the signal that the cavalry had left.

When the Athenian line was ready, according to one source, the simple signal to advance was given by Miltiades: " At them ".

When the trumpet signal for the start rang out, Antony's fleet began issuing from the straits, and the ships moved into line and remained quiet.

When the infant BBC Television service was started in 1936, Rediffusion, which had supplied cable radio services since 1928, started providing " Pipe TV " to its customers who had difficulties tuning into the weak TV broadcast signal.

When the bridge was in use, boaters would signal the operator, who would start a diesel engine and rotate the bridge to the open position on a large gear.

When the keyboard processor detects that a key has changed state, it sends a signal to the CPU indicating the scan code of the key and its new state.

When Greek orthography was codified by grammarians in the Hellenistic era, they used a diacritic symbol derived from this half-H shape to signal the presence of / h /, and added as its counterpart a reverse-shaped diacritic to denote absence of / h /.

When the power supply to the amplifier is first switched on, electronic noise in the circuit provides a signal to get oscillations started.

When such a system is subject to an impulse ( or any signal of finite duration ) it will respond with an output waveform which lasts past the duration of the input, eventually decaying exponentially in one or another manner, but never completely settling to zero ( mathematically speaking ).

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 a pilot moves the control column ( or sidestick ), a signal is sent to a computer ( analogous to moving a game controller ) the signal is sent through multiple wires ( channels ) to ensure that the signal reaches the computer.

When it appeared that the revolt would succeed, the Thrintun elders built and used a psychic amplifier that forced every sentient being in the galaxy to commit suicide, the signal repeating for centuries.

When disruptive change has penetrated to the third level of social order, the process of disruption rapidly reaches a point of no return.

When this water level has been reached, inject steam into the wheel until the temperature reaches that shown in Column B of Table 2.

Neurons generate electrical signals that travel along their axon s. When a pulse of electricity reaches a junction called a synapse, it causes a neurotransmitter chemical to be released, which binds to receptors on other cells and thereby alters their electrical activity.

When the child reaches skeletal maturity ( 18 to 25 years of age ), all of the cartilage is replaced by bone, fusing the diaphysis and both epiphyses together ( epiphyseal closure ).

When the total vapor pressure reaches the pressure surrounding the liquid, boiling occurs and liquid turns to gas throughout the bulk of the liquid.

When the process of escape and return reaches an equilibrium, the vapor is said to be " saturated ," and no further change in either vapor pressure and density or liquid temperature will occur.

) When the orthodromic stimulus reaches the muscle fiber, it elicits a strong M-response indicative of muscle contraction.

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 a particular substance, whether chemical or biotic — reaches unsafe levels in the bloodstream, the body can effectively dilute — or at least maintain equilibrium of — the offending substances by storing it in new fat tissue.

When the actuator reaches the desired position, the two signals ( incoming and outgoing ) cancel each other out and the actuator stops moving ( completing a feedback loop ).

When he finally reaches the cables, Andoh tries to stop him from releasing them.

A Power stroke: When the piston reaches a point just before top dead center, the spark plug ignites the fuel mixture.

When it reaches the towns of Saugatuck and Douglas it stops and enters Lake Michigan.

When this news of his family ’ s execution reaches him, Macduff is stricken with grief and vows revenge.

When the voltage of C1 right-hand plate ( Q2 base voltage ) becomes positive and reaches 0. 6 V, Q2 base-emitter junction begins diverting a part of R2 charging current.

When the water reaches the coastline, the corresponding coastal ponds, both freshwater and brackish, fill to capacity and beyond, spilling over into the sea.

When the timer reaches 0: 00, the blinds go to a higher level.

When the air reaches a high altitude, where the temperature is low, water vapor condenses into clouds, which rain onto the Earth's surface, completing the water cycle.

When a neurotransmitter is released at a synapse, it reaches its highest concentration inside the narrow space of the synaptic cleft, but some of it is certain to diffuse away before being reabsorbed or broken down.

When the game score reaches three points each, the receiver chooses which side of the court ( advantage court or deuce court ) the service is to be delivered on the seventh and game-deciding point.

When the incident angle is increased sufficiently, the transmitted angle ( in air ) reaches 90 degrees.

# When a pair reaches 5 points in the final game, the pairs must switch ends of the table and the team that receives the service must switch receiver.

When the bus reaches its destination, the passengers on the bus — including the narrator — are gradually revealed to be ghosts.