time

Time is the indefinite continued progress of existence and events that occur in apparently irreversible succession from the past through the present to the future. Time is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the conscious experience. Time is often referred to as the fourth dimension, along with the three spatial dimensions.
Time has long been an important subject of study in religion, philosophy, and science, but defining it in a manner applicable to all fields without circularity has consistently eluded scholars. Nevertheless, diverse fields such as business, industry, sports, the sciences, and the performing arts all incorporate some notion of time into their respective measuring systems. Two contrasting viewpoints on time divide prominent philosophers. One view is that time is part of the fundamental structure of the universe—a dimension independent of events, in which events occur in sequence. Isaac Newton subscribed to this realist view, and hence it is sometimes referred to as Newtonian time. The opposing view is that time does not refer to any kind of "container" that events and objects "move through", nor to any entity that "flows", but that it is instead part of a fundamental intellectual structure (together with space and number) within which humans sequence and compare events. This second view, in the tradition of Gottfried Leibniz and Immanuel Kant, holds that time is neither an event nor a thing, and thus is not itself measurable nor can it be travelled.
Time in physics is unambiguously operationally defined as "what a clock reads". Time is one of the seven fundamental physical quantities in both the International System of Units and International System of Quantities. Time is used to define other quantities—such as velocity—so defining time in terms of such quantities would result in circularity of definition. An operational definition of time, wherein one says that observing a certain number of repetitions of one or another standard cyclical event (such as the passage of a free-swinging pendulum) constitutes one standard unit such as the second, is highly useful in the conduct of both advanced experiments and everyday affairs of life. The operational definition leaves aside the question whether there is something called time, apart from the counting activity just mentioned, that flows and that can be measured. Investigations of a single continuum called spacetime bring questions about space into questions about time, questions that have their roots in the works of early students of natural philosophy.
Furthermore, it may be that there is a subjective component to time, but whether or not time itself is "felt", as a sensation, or is a judgment, is a matter of debate.
Temporal measurement has occupied scientists and technologists, and was a prime motivation in navigation and astronomy. Periodic events and periodic motion have long served as standards for units of time. Examples include the apparent motion of the sun across the sky, the phases of the moon, the swing of a pendulum, and the beat of a heart. Currently, the international unit of time, the second, is defined by measuring the electronic transition frequency of caesium atoms (see below). Time is also of significant social importance, having economic value ("time is money") as well as personal value, due to an awareness of the limited time in each day and in human life spans.



View More On Wikipedia.org
  1. O

    International  US Sig CEO faces German jail time...

    CEO Of U.S. Gun-Maker Faces Jail In Germany What a hot mess.
  2. Fieryotaku

    Having trouble with a time frame a business gave me.

    I went to a business which shall be left unnamed and dropped off 2 firearms for work one was a laser stipple and the other was a cerakote job. I was told 1-1.5 weeks for the stipple and 4-6 for the cerakote. I am now 3 weeks in on the stipple job and so far they haven't even gotten to the...
  3. rdb241

    Time to move?

    When Gun Laws Cause An Exodus From A State - Bearing Arms
  4. Reno

    Leave negative feedback? Story time...

    Warning! :s0137: I experienced my first annoying/sketchy NWFA transaction. The type that rivals Armslist. The story: Buyer is from Keizer. Has 9 positive feedbacks on his thingy. He reaches out to me on my AR15 listed asking if I’d sell just the upper. Sure. Price agreed to was $200...
  5. turbo_vanner

    First time casting issues

    Hey guys, just got some lead, a lee production pot, and a 230gr mold to cast some subs for my 300blk. I dont have a thermometer that will work with the lead for the moment, but i tried casting it hot, cool, inbetween, with the mold cold to hot, didnt seem to make a difference. 99% of my...
  6. A

    Oregon  Time To Lay Some New Sod

    This is it ladies and gentleman. It's time to grow some more grassroots. We need to set aside our differences and unify our efforts to minimize the damage to our gun rights that is occurring in the State of Oregon. Let's face it we are outnumbered and our gun rights will not come out of this...
  7. D

    Time to contact your Oregon legislators to oppose gun laws.

    Ok NW Firearms folk who live in Oregon.... this is my first political post, maybe my last. I have to tell you that I'm scared to death that the Oregon Legislature will cripple our ability to acquire, own and use firearms. Now I see a lot of reactionary posts about how bad this legislation...
  8. D

    Time to contact your legislators to oppose gun laws. I'm scared of what is ahead!

    Ok NW Firearms folk who live in Oregon.... this is my first political post, maybe my last. I have to tell you that I'm scared to death that the Oregon Legislature will cripple our ability to acquire, own and use firearms. Now I see a lot of reactionary posts about how bad this legislation...
  9. T

    Oregon  Medford, OR alert. Time to get active (event today, 01/11/2019).

    As many have seen in other threads, the anti-gun bills that continue to demonize legal gun ownership are coming. It is time to step-up and get active. First up? Just found out a few minutes ago that in Medford, a public "march for our lives" forum is meeting at 5:30pm TODAY, January 11th...
  10. American123

    Wanted a 1 time purchase price hobby - tomahawk throwing

    As if I didn't have enough things keeping me busy, recently I got the itch to purchase some tomahawks. Why? The predominant reason being that I wanted something fun, low cost / 1 time expense that I could enjoy doing in the gaps between range visits. I can't legally shoot in my back yard...
  11. Nick Burkhardt

    Oregon  Salem Rally time Tuesday 1/15

    PATRIOTS: The plan is to meet at the Capitol in Salem on Tuesday, January 15th 11AM to 3PM and rally. Also present a redress of grievances to Sen and House Leaders. That list is LONG! PLEASE bring Gadsden flags....and-- if you want to-- wear yellow shirts or yellow vests. We are going to...
  12. N

    Washington  Police chief: Time for a gun sanctuary

    Police chief: Time for a gun sanctuary
  13. A

    National  Does anybody know what the status is on bumpstock ban?

    I am trying to figure out when the ban begins?
  14. N Monty

    Oregon - Want to hunt rabbit for the first time this weekend.

    Hi, I've never done any hunting before, but hopefully this weekend I want to get out and hunt rabbit. I've taken a basic hunter's ed course, but outside of that, I have no idea where to start. My understanding is that in Oregon, most rabbits are unprotected game, except the white-tailed rabbit...
  15. Tony617

    Other State  At the only gun shop in Thousand Oaks, fearful residents decide it's time to buy a gun

    At the only gun shop in Thousand Oaks, fearful residents decide it's time to buy a gun
  16. ma96782

    Travel advice: Visit Seattle, have good time.

    Travel advice? "Come to the coast, visit Seattle.....have a good time." Or.....why not Chicago? What do the cities have in common? A: DEMS in positions of power and LIBERALS galore as their voting base. Aloha, Mark
  17. The Heretic

    If you could go back in time...

    To what point in time would go? Caveat - it would be a one way trip. Where would it be? What would you do? What would you take if it was only what you could carry (including anything you could put on a cart/etc. that you could pull/push yourself)? What guns and knives, if any, would you take?
  18. tac

    Wrong time, wrong place....

    for the pigeon, that is. Look carefully to see the unfortunate bird fly straight in front of the cannon as it fires... Liveleak.com - What are the odds?! Pigeon gets shot by cannon 'leaves not a trace behind............'
  19. Helocat

    9mm Subs + 300blk subs = Can time

    With the recent addition to Cans that were released I am on a mission for subsonic rounds. In anticipation of the hush metal I brought in some 165gn 9mm FMJ RN from Xtreme Bullets out of ID. 3.8gn of TiteGroup seated to 1.21 they are very quiet, clean and hit hard down range. Like thump in...
Top Bottom