What's the difference between epoch and era?

Epoch


Definition:

  • (n.) A fixed point of time, established in history by the occurrence of some grand or remarkable event; a point of time marked by an event of great subsequent influence; as, the epoch of the creation; the birth of Christ was the epoch which gave rise to the Christian era.
  • (n.) A period of time, longer or shorter, remarkable for events of great subsequent influence; a memorable period; as, the epoch of maritime discovery, or of the Reformation.
  • (n.) A division of time characterized by the prevalence of similar conditions of the earth; commonly a minor division or part of a period.
  • (n.) The date at which a planet or comet has a longitude or position.
  • (n.) An arbitrary fixed date, for which the elements used in computing the place of a planet, or other heavenly body, at any other date, are given; as, the epoch of Mars; lunar elements for the epoch March 1st, 1860.

Example Sentences:

  • (1) The adaptive filter processor was tested for retrospective identification of artifacts in 20 male volunteers who performed the following specific movements between epochs of quiet, supine breathing: raising arms and legs (slowly, quickly, once, and several times), sitting up, breathing deeply and rapidly, and rolling from a supine to a lateral decubitus position.
  • (2) The results indicate that the different EEG frequency bands during a given EEG epoch are generated by neural populations in different brain locations.
  • (3) The majority of classes have over 200 discrete epochs.
  • (4) By means of the adaptive estimation of the variance of respiratory movements, an amplitude-time window is calculated to choose between epochs with breaths and apnoea.
  • (5) Speaking in Athens last November, the Italian philosopher Giorgio Agamben discussed an epochal transformation in the idea of government, "whereby the traditional hierarchical relation between causes and effects is inverted, so that, instead of governing the causes – a difficult and expensive undertaking – governments simply try to govern the effects".
  • (6) The effect was chiefly on the frequency of state changes and less on epoch durations.
  • (7) The author rejects the proposition, encountered in some parts of the psychoanalytic and social-science literature, that certain types of disturbances correspond to certain epochs or forms of society.
  • (8) In overt schizophrenics, late epoch stability was low in all EPs.
  • (9) EPOCH was administered intravenously once a week with the dosage of 3,000-9,000 IU for 8 weeks.
  • (10) The prolonged neurophysiological effects of stimulation may allow the use of maximum effective intervals between optimal epochs of stimulation so that any cerebellar damage can be minimized.
  • (11) Median heart and respiratory rate, respiratory variability, and median extent of three types of heart rate variation were determined for each epoch, and the minute-by-minute correlations between seven pairs of parameters were determined for quiet sleep, rapid eye movement sleep, and waking in each recording.
  • (12) The short-term variability of the selected EEG measures and their suitability as a sample estimate were assessed by computing the coefficient of variation from all selected epochs of a given subject at baseline.
  • (13) But what use are such skills when addressing the enormity of this new epoch?
  • (14) It is argued that, during the first two and last periods, all quantities of genetic interest, such as the gametic frequencies, the mean fitness, the linkage disequilibrium, and the linkage disequilibrium ratio, Z, change with time in essentially the same manner, characteristic of the particular epoch concerned and determined in this paper, and therefore, when quasilinkage equilibrium occurs, it is a transitional phenomenon.
  • (15) Evidence for the hypothesis was found only during the EEG-epoch one second before the answer.
  • (16) The automatic analysis scored fewer epochs as stages wake, rapid eye movement (REM), and 2 and more as stages 1, 3, and 4.
  • (17) Finally, an epoch by epoch analysis is described, with the aim of achieving a more detailed evaluation of the intergroup variability.
  • (18) In the first set of experiments (n = 8), placebo or CS (30 mg) was given, followed by four 15-min epochs of alveolar hypoxia (8% O2, 5% CO2, 87% N2) each separated by 30 min of alveolar normoxia (21% O2).
  • (19) Two averaging strategies were assessed: (1) averaging the entire pre- and poststimulus epoch point for point across individuals and (2) averaging the voltage of Pa at the latency of Pa for each individual.
  • (20) Finally, it is demonstrated that the probability of a false-positive decision may increase by an order of magnitude if the Rayleigh test is not performed once, for a fixed number of epochs specified in advance, but is carried out repeatedly during an ongoing experiment until either one of the tests indicates the presence of an evoked response or the upper limit for the number of epochs is exceeded.

Era


Definition:

  • (n.) A fixed point of time, usually an epoch, from which a series of years is reckoned.
  • (n.) A period of time reckoned from some particular date or epoch; a succession of years dating from some important event; as, the era of Alexander; the era of Christ, or the Christian era (see under Christian).
  • (n.) A period of time in which a new order of things prevails; a signal stage of history; an epoch.

Example Sentences:

  • (1) "In my era, we'd get a phone call from John [Galliano] before the show: this is what the show's about, what do you think?
  • (2) After the emperor's death, they are named after an era chosen for them; thus Hirohito is known exclusively in Japan as Showa Emperor.
  • (3) The viral titer was 10(1.8) tissue culture infective doses (TCID) higher than that of commercial ERA vaccine.
  • (4) Thanks to the groundbreaking technology and heavy investment of a new breed of entertainment retailers offering access services, we are witnessing a revolution in the entertainment industry, benefitting consumers, creators and content owners alike.” ERA acts as a forum for the physical and digital retail sectors of music, and represents over 90% of the of the UK’s entertainment retail market.
  • (5) We have now entered the era of climate change induced loss and damage.
  • (6) In an era when citizens expect choice, the council argue, the old model of local government no longer works.” Northants uses the word “right-sourcing” to describe the process of offloading services.
  • (7) He is seeing clubbers with their hands in the air again: "In the dubstep era everyone just stood there and nodded their heads.
  • (8) In an article for the Nation, Chomsky courts controversy by arguing that parallels drawn between campaigns against Israel and apartheid-era South Africa are misleading and that a misguided strategy could damage rather than help Israel's victims.
  • (9) Russia may be on the point of walking out of a major cold war era arms-control treaty, Russian analysts have said, after President Obama accused Moscow of violating the accord by testing a cruise missile .
  • (10) This deal also promotes the separation of the single market and single currency – a British objective for many years that would have been unthinkable in the Maastricht era.
  • (11) The new era of medical economics emphasizes prospective payment and alternative delivery systems.
  • (12) Once availed of the fallacy that athletes are role models, there’s a certain purity that feels almost quaint in an era of athlete as brand.
  • (13) A “shock to the system” is precisely how his adviser Kellyanne Conway has repeatedly described the new era.
  • (14) So the worst start to a campaign in the Roman Abramovich era has condemned Chelsea to the top of the Premier League table.
  • (15) The report’s concluding chapters raised dire warning that the operations of contemporary child protection agencies were replicating many of the destructive dynamics of the Stolen Generations era.
  • (16) The modern era of leg lengthening has therefore brought two things: new technical versatility to correct complex and coexisting deformities and new concepts of the biology of lengthening that are not device specific and can be applied with most lengthening devices.
  • (17) Pallo Jordan , the ANC's chief propagandist in exile during the apartheid era, made no effort to hide his emotions.
  • (18) These infections must have been more common in the pre-antibiotic era and perhaps a search of the older literature would have been more fruitful.
  • (19) In 1994, he appeared as himself in the television special Smashey and Nicey, the End of an Era.
  • (20) The club’s increase in capacity from 35,000 at the Boleyn Ground to 60,000 at the former Olympic Stadium also makes it the biggest and most successful stadium move in Britain in the modern era.” The club’s vice-chairman, Karren Brady, added: “David Sullivan, David Gold and I have always believed in the West Ham fanbase and knew we could fill the new stadium “Reports consistently show that we have highest average capacity in the Premier League and every game in our final season at the Boleyn Ground sold out within days of going on sale.