`` By observing the conductor '', he says with a twinkle in his eyes, `` I learned how not to conduct ''.

By observing which areas of the brain take up the radioactive isotope, we can see which areas of the brain are more active than other areas.

By the end of his premiership his puppet would often be shown observing the latest fiasco and ineffectually murmuring " oh dear ".

By observing reflections, any unsoldered pins of a ball grid array device can be detected.

By contrast, in " Patterns of Force ," where the crew discovers that a Federation cultural observer has contaminated the culture he was supposed to be observing by having blatantly reformed a planet's government to emulate Nazi Germany, they help the local resistance overthrow the government.

By invisibly observing the crew of the Romulan vessel, Ro and La Forge soon discover that the accident, as well as the damage to the Romulan ship, is the result of a Romulan weapons test, and that the Romulans are now performing a subtle act of sabotage that will destroy the Enterprise-D the moment that ship accelerates to warp drive.

By observing and recording the animals ’ escapes and escape times, Thorndike was able to graph the times it took for the animals in each trial to escape, which eventually resulted in a learning curve.

By observing how the Canadian dollar behaves against the US dollar, foreign exchange economists can indirectly observe internal behaviours and patterns in the US economy that could not be seen by direct observation.

* By police officers observing traffic, and issuing citations to motorists who violate the signal.

# By observing the addresses as approached by the transmitter.

By observing parallax, measuring angles and using geometry, one can determine the distance to various objects in space, typically stars, although other objects in space could be used.

By sunrise, the successful observer will be observing the last few objects low on the eastern horizon, hoping to see them before the sky becomes too bright due to the rising sun.

By observing the flow into an elemental square in an x-y Cartesian coordinate system, we have:

By observing the flow into an elemental square in an r – θ polar coordinate system, we have:

The prescribed readings for the Sunday are from the Epistle to the Romans, " By Christ's death we are dead for sin " (), and from the Gospel of Matthew a passage from the Sermon on the Mount about better justice than the justice of merely observing laws and rules ().

By maintaining a regular sleep schedule and observing good sleep hygiene, one can reduce chances of sleep paralysis.

By observing the eye movement and eyelids, the examiner is able to obtain more information about the extraocular muscles, the levator palpebrae superioris muscle, and cranial nerves III, IV, and VI.

By observing this rule, precise control of paint volume and line width and character can be achieved.

By 1803, Accum had published a series of articles in Nicholson's Journal, which discussed a number of subjects: investigating methods to determine the purity of medicines, determining the existence of benzoic acids in vanilla extract, observing the explosivity of sulphur-phosphorus mixtures.

By observing people with brain damage, his theory was made more concrete.

By observing the mercury in the column while releasing the air pressure with a control valve, one can read the values of the blood pressure in mm Hg.

By 1827, Pons's eyesight had begun to fail, and he retired from observing altogether shortly before his death.

By the mid-1960s, several studies identified the gradual reduction in cellular immunity in old age, observing that in a cohort of 1, 000 people who lived to the age of 85, approximately 500 ( i. e., 50 %) would have at least one attack of herpes zoster, and 10 ( i. e., 1 %) would have at least two attacks.

By 1861, Patrick-Henri, then a colonel in the Imperial Guard Cavalry observing the Union and Confederate armies during the American Civil War, mentions that his mother is " very lonely " so it may be assumed that Sharpe has died sometime before that date.

By all means the most important distinction is that between those total-cost apportionments which superimpose a distribution of admittedly unallocable cost residues on estimates of incremental or marginal costs, and those other apportionments which recognize no difference between true cost allocation and mere total-cost distribution.

By this time the main difference between light and battle cavalry was their training ; the former was regarded as a tool for harassment and reconnaissance, while the latter was considered best for close-order charges.

By the end of the story, there is little physical difference between the body of the hero, now called Andrew, and humans equipped with advanced prosthetics, save for the presence of Andrew's artificial positronic brain.

By developing something better, Babbage had rendered the difference engine useless in the eyes of the government.

By definition, it is the amount of energy gained by the charge of a single electron moved across an electric potential difference of one volt.

By inserting the energetic definitions of the ionization potential and electron affinity into the Mulliken electronegativity, it is possible to show that the Mulliken chemical potential is a finite difference approximation of the electronic energy with respect to the number of electrons., i. e.,

By July 1944, it was in any case too late for Goebbels and Speer ’ s internal coup to make any real difference to the outcome of the war.

By Bernoulli's principle, this implies a pressure difference and therefore lift.

By comparing the times of the eclipses, the difference in longitude of Paris to Uranienborg was calculated.

By the third week, this difference between the two groups had disappeared.

By measuring the frequency of the returned signal and comparing that with the original, the difference can be easily measured.

By tuning the frequency of the local oscillator f < small >< sub > LO </ sub ></ small >, the resulting difference frequency f < small >< sub > LO </ sub ></ small >-f < small >< sub > d </ sub ></ small >

By dividing the difference in y-coordinates by the difference in x-coordinates, one can obtain the slope of the line:

By measuring the difference in time between the pulse being transmitted and the echo being received, it is possible to determine how far away the object is.

By Morpheus's estimation, then, of there being an approximate 200 year difference between the era in the Matrix and the era of the real world, with the knowledge that Neo's time is actually the 6th incarnation of the Matrix ( and an estimated 200 years or so for each incarnation ), that could potentially mean the year in the real world is closer to the year 3399.

By the early 2000s, there was little price difference between a hub and a low-end switch.

By contrast, passband bandwidth is the difference between a highest frequency and a nonzero lowest frequency.

By the time of the Union of Lublin in 1569, there was not much difference between the administrative and judicial systems in force in Lithuania and Poland.

By conquering foreign markets, the issuing rulers would enjoy extra income from seigniorage ( the difference between the value of the coin and the value of the metal the coin was made of ).

By the 1950s, there was no statistically significant difference between Republicans and Democrats on tariff policies.

By the time it arrives at the water mill the difference in levels between the leat and the main stream is great enough to provide a useful head of water – several metres ( perhaps 5 to 15 feet ) for a watermill, or a metre or less ( perhaps one to four feet ) for a water-meadow.

By separating positive and negative charges, electric potential difference is produced, generating an electric field.

By 1990, the difference in income between Argentina and the other Latin American countries was much smaller.

By night, he becomes an efficient waiter though he finds it difficult to tell the difference between the " in " and " out " doors to the kitchen, or to successfully deliver a roast duck to table through a busy dance floor.