Timp

"Big Ben", marele ceas al Palatului Westminster din Londra, unul dintre cele mai renumite ceasuri din lume.

Timpul este mersul înainte continuu și nedefinit al existenței și al evenimentelor care survin într-o succesiune după toate constatările ireversibile din trecut, prin prezent, spre viitor.^[1]^[2]^[3] Timpul este unul dintre conceptele fundamentale ale fizicii și filosofiei. Este o măsură a duratei evenimentelor și are diferite înțelesuri în funcție de contextul în care este definit. În fizică, timpul este o dimensiune a naturii și poate fi văzută ca o măsură a schimbării. În accepția fizicii clasice, timpul este un continuu. Fizica modernă (mai precis, teoria mecanicii cuantice) dispută însă această calitate, sugerând că ar exista doar continuu spațiu-timp. În filosofie, timpul este definit ca un flux neîntrerupt, ireversibil, care nu poate curge decât într-un singur sens. Este deci un continuu în care evenimentele se succed de la trecut, prin prezent, spre viitor, și în cadrul căruia se desfășoară toate procesele din natură. Definirea cu exactitate a timpului este o sarcină dificilă, atât în filozofie, cât și în știință.

^ „Oxford Dictionaries:Time”. Oxford University Press. 2011. Arhivat din originalul de la 4 iulie 2012. Accesat în 18 mai 2017. The indefinite continued progress of existence and events in the past, present, and future regarded as a whole
^
- „Webster's New World College Dictionary”. 2010. Arhivat din originalul de la 5 august 2011. Accesat în 9 aprilie 2011. 1.indefinite, unlimited duration in which things are considered as happening in the past, present, or future; every moment there has ever been or ever will be… a system of measuring duration 2.the period between two events or during which something exists, happens, or acts; measured or measurable interval
- „The American Heritage Stedman's Medical Dictionary”. 2002. Arhivat din originalul de la 5 martie 2012. Accesat în 9 aprilie 2011. A duration or relation of events expressed in terms of past, present, and future, and measured in units such as minutes, hours, days, months, or years.
- „Collins Language.com”. HarperCollins. 2011. Arhivat din original la 2 octombrie 2011. Accesat în 18 decembrie 2011. 1. The continuous passage of existence in which events pass from a state of potentiality in the future, through the present, to a state of finality in the past. 2. physics a quantity measuring duration, usually with reference to a periodic process such as the rotation of the earth or the frequency of electromagnetic radiation emitted from certain atoms. In classical mechanics, time is absolute in the sense that the time of an event is independent of the observer. According to the theory of relativity it depends on the observer's frame of reference. Time is considered as a fourth coordinate required, along with three spatial coordinates, to specify an event.
- „The American Heritage Science Dictionary @dictionary.com”. 2002. Arhivat din originalul de la 5 martie 2012. Accesat în 9 aprilie 2011. 1. A continuous, measurable quantity in which events occur in a sequence proceeding from the past through the present to the future. 2a. An interval separating two points of this quantity; a duration. 2b. A system or reference frame in which such intervals are measured or such quantities are calculated.
- „Eric Weisstein's World of Science”. 2007. Accesat în 9 aprilie 2011. A quantity used to specify the order in which events occurred and measure the amount by which one event preceded or followed another. In special relativity, ct (where c is the speed of light and t is time), plays the role of a fourth dimension.
^ „Time”. The American Heritage Dictionary of the English Language (ed. Fourth). 2011. Arhivat din originalul de la 19 iulie 2012. A nonspatial continuum in which events occur in apparently irreversible succession from the past through the present to the future.

[1] „Oxford Dictionaries:Time”. Oxford University Press. 2011. Arhivat din originalul de la 4 iulie 2012. Accesat în 18 mai 2017. The indefinite continued progress of existence and events in the past, present, and future regarded as a whole

[DefRefs02-2] 
„Webster's New World College Dictionary”. 2010. Arhivat din originalul de la 5 august 2011. Accesat în 9 aprilie 2011. 1.indefinite, unlimited duration in which things are considered as happening in the past, present, or future; every moment there has ever been or ever will be… a system of measuring duration 2.the period between two events or during which something exists, happens, or acts; measured or measurable interval

„The American Heritage Stedman's Medical Dictionary”. 2002. Arhivat din originalul de la 5 martie 2012. Accesat în 9 aprilie 2011. A duration or relation of events expressed in terms of past, present, and future, and measured in units such as minutes, hours, days, months, or years.

„Collins Language.com”. HarperCollins. 2011. Arhivat din original la 2 octombrie 2011. Accesat în 18 decembrie 2011. 1. The continuous passage of existence in which events pass from a state of potentiality in the future, through the present, to a state of finality in the past. 2. physics a quantity measuring duration, usually with reference to a periodic process such as the rotation of the earth or the frequency of electromagnetic radiation emitted from certain atoms. In classical mechanics, time is absolute in the sense that the time of an event is independent of the observer. According to the theory of relativity it depends on the observer's frame of reference. Time is considered as a fourth coordinate required, along with three spatial coordinates, to specify an event.

„The American Heritage Science Dictionary @dictionary.com”. 2002. Arhivat din originalul de la 5 martie 2012. Accesat în 9 aprilie 2011. 1. A continuous, measurable quantity in which events occur in a sequence proceeding from the past through the present to the future. 2a. An interval separating two points of this quantity; a duration. 2b. A system or reference frame in which such intervals are measured or such quantities are calculated.

„Eric Weisstein's World of Science”. 2007. Accesat în 9 aprilie 2011. A quantity used to specify the order in which events occurred and measure the amount by which one event preceded or followed another. In special relativity, ct (where c is the speed of light and t is time), plays the role of a fourth dimension.

[3] „Webster's New World College Dictionary”. 2010. Arhivat din originalul de la 5 august 2011. Accesat în 9 aprilie 2011. 1.indefinite, unlimited duration in which things are considered as happening in the past, present, or future; every moment there has ever been or ever will be… a system of measuring duration 2.the period between two events or during which something exists, happens, or acts; measured or measurable interval

[4] „The American Heritage Stedman's Medical Dictionary”. 2002. Arhivat din originalul de la 5 martie 2012. Accesat în 9 aprilie 2011. A duration or relation of events expressed in terms of past, present, and future, and measured in units such as minutes, hours, days, months, or years.

[5] „Collins Language.com”. HarperCollins. 2011. Arhivat din original la 2 octombrie 2011. Accesat în 18 decembrie 2011. 1. The continuous passage of existence in which events pass from a state of potentiality in the future, through the present, to a state of finality in the past. 2. physics a quantity measuring duration, usually with reference to a periodic process such as the rotation of the earth or the frequency of electromagnetic radiation emitted from certain atoms. In classical mechanics, time is absolute in the sense that the time of an event is independent of the observer. According to the theory of relativity it depends on the observer's frame of reference. Time is considered as a fourth coordinate required, along with three spatial coordinates, to specify an event.

[6] „The American Heritage Science Dictionary @dictionary.com”. 2002. Arhivat din originalul de la 5 martie 2012. Accesat în 9 aprilie 2011. 1. A continuous, measurable quantity in which events occur in a sequence proceeding from the past through the present to the future. 2a. An interval separating two points of this quantity; a duration. 2b. A system or reference frame in which such intervals are measured or such quantities are calculated.

[7] „Eric Weisstein's World of Science”. 2007. Accesat în 9 aprilie 2011. A quantity used to specify the order in which events occurred and measure the amount by which one event preceded or followed another. In special relativity, ct (where c is the speed of light and t is time), plays the role of a fourth dimension.

[3] „Time”. The American Heritage Dictionary of the English Language (ed. Fourth). 2011. Arhivat din originalul de la 19 iulie 2012. A nonspatial continuum in which events occur in apparently irreversible succession from the past through the present to the future.

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