时间

關於事件先後順序、過去與未來的物理量

OverviewAI-generated

Time is a scalar quantity and independent variable, often represented by the symbols t and τ. It functions as a measurable set and is a subclass of both sequence and measurable set. As a component of spacetime, time is studied by the philosophy of space and time and general relativity. It includes parts such as time intervals and is distinct from the concept of time itself.

The subject is maintained by WikiProject Time, WikiProject Physics, WikiProject Astronomy, and WikiProject Philosophy. It appears in the Brockhaus and Efron Encyclopedic Dictionary, Zedler, Großes vollständiges Universallexicon aller Wissenschaften und Künste, and the Encyclopædia Britannica 11th edition. Time is depicted by the work Truth unveiled by Time and is referenced by 2,043 other encyclopedia articles. It is also a topic on Stack Exchange and has a dedicated category on Commons.

Synthesized by Vinony from 20 facts across 3 sources: Wikidata, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Research

5,788,078 papers

Screen time and mental health in college students: Time in nature as a protective factor.Journal of American college health : J of ACH · 2024Deyo A, Wallace J, Kidwell KMDOI: 10.1080/07448481.2022.2151843
Time-dependent covariates in the Cox proportional-hazards regression model.ReviewAnnual review of public health · 1999Fisher LD, Lin DYDOI: 10.1146/annurev.publhealth.20.1.145
Strategic time in negotiation.ReviewCurrent opinion in psychology · 2019Carnevale PJDOI: 10.1016/j.copsyc.2018.12.017
Psychological time and intertemporal preference.ReviewCurrent opinion in psychology · 2019Kim BK, Zauberman GDOI: 10.1016/j.copsyc.2018.06.005
Time marking in perception.ReviewNeuroscience and biobehavioral reviews · 2023White PADOI: 10.1016/j.neubiorev.2023.105043
Time in relation to goals.ReviewCurrent opinion in psychology · 2019Etkin JDOI: 10.1016/j.copsyc.2018.04.013
Why time poverty matters for individuals, organisations and nations.ReviewNature human behaviour · 2020Giurge LM, Whillans AV, West CDOI: 10.1038/s41562-020-0920-z
It's time for happiness.ReviewCurrent opinion in psychology · 2019Mogilner CDOI: 10.1016/j.copsyc.2018.07.002

via PubMed

Wikidata facts

Instance of: independent variable
Subclass of: measurable set
Part of: spacetime
Has part: time interval
Image: MontreGousset001.jpg

Show 10 more facts

Commons category: Time
topic's main category: Category:Time
topic has template: Template:Time topics
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
different from: time
described at URL: www.w3.org/2006/time
Stack Exchange tag: stackoverflow.com/tags/time
manifestation of: measurable set
quantity symbol (string): τ
depicted by: Truth unveiled by Time

Sources (4)

via Wikidata · CC0

Article · 中文

時間是一种尺度，在物理定义是标量，藉著时间，事件发生之先后可以按过去-现在-未来之序列得以确定（时间点/時刻），也可以衡量事件持續的期間以及事件之間和间隔长短（时间段）。在閔考斯基時空中，時間是除了空間三個維度以外的第四維度。長久以來，時間一直是宗教、哲學及科學領域的研究主題之一，但學者們尚且無法為時間找到一個可以適用於各領域、具有一致性且又不循環的定義。在商業、工業、體育、科學及表演藝術等領域都有一些各自來標示及度量時間的方法。一些簡單，爭議較小的定義包括「時間是時鐘量測的物理量。」及「時間使得所有事情不會同時發生。」時間在國際單位製中的基本單位是秒，1967年起採用的定義為「銫-133原子在基態下的兩個超精細能級之間躍遷所對應的輻射的9192631770個周期的時間。」哲學家對於時間有兩派不同的觀點：一派認為時間是宇宙的基本結構，是一個會依序列方式出現的維度，像艾萨克·牛顿就對時間有這樣的觀點。包括戈特弗里德·莱布尼茨及伊曼努爾·康德在內的另一派認為時間不是任何一種已經存在的維度，也不是任何會「流動」的實存物，時間只是一種心智的概念，配合空間和數可以讓人類對事件進行排序和比較。換句話說，時間不過是人為便於思考宇宙，而對物質運動劃分，是一種人定規則。

Abstract from DBpedia / Wikipedia · CC BY-SA