20 Things You Didn`t Know About... Time

Submitted by: eugenius 8 years ago in Science
http://discovermagazine.com/2009/mar/20-things-you-didn.t-know-about-time?=rssfeed

The beginning, the end and the funny habits of our favorite ticking force.
There are 73 comments:
Male 300
Koala, no. 17 isn`t wrong, as you stated. But what you said about being close to the speed of light isn`t wrong either. According to relativity, both would apply.

Also I find it quite funny how you tell Silverfalcon that there is no evidence for one of his points, then bring up a point that has no evidence itself.

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Male 2,592
time isn`t a force. its accepted that its the 4th dimension of our universe, but I question that in my own head. I just have a hard time connecting the concept of time with spacial dimensions. I know they`re related in some sense because one affects the other. But theres something else to it...
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Male 2,592
wow i shoulda read first, commented last because #1 was exactly what was on my mind haha. but i didn`t know they were thinking that too which is awesome
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Male 2,592
time isn`t a force. its accepted that its the 4th dimension of our universe, but I question that in my own head. I just have a hard time connecting the concept of time with spacial dimensions. I know they`re related in some sense because one affects the other. But theres something else to it...
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Male 2,576
Silverfalcon

On your second point, There is No evidence whatsoever for that.

Read up on Vacuum fluctuations. It is beleived the Universe is one in which the Symetry of particles "broke".

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Male 2,576
dragonshadoz

Then what happens to those who observe and are not on adrenaline? Wouldn`t time, for them remain the same? At least in Appearance?

If they see things as sped up, then the human who is on adenaline is incased in a time bubble, it would be the only way.

So, does time slow down and not notice, or is he more alert?

I`d go for the second one :-p

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Male 147
Gravity slows time
Time wasn`t around forever and started at the big bang
Time may someday literally run out

Time is very interesting indeed...

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Female 4,028
Time certainly is confusing. I mean, when you have adrenaline, your eyes can take in more "shots" per second, which is why time can seem to be in slow-motion when you`re in danger.
So I wonder... is real time in slow motion, but our eyes just don`t notice it?
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Male 555
My head hurts now...
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Female 495
I find the whole concept of time - the science of it and the philosophy of it - impossible to get my head around.

Thinking about what time is is just incredibly frustrating.

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Male 418
Hmmm, not the most interesting thing I have read. But not that bad for a blog.
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Male 2,576
aliachloe: It seems people roll down either side of the spectrum. You Either love me or hate me :-/

Isn`t that Right Baal? :-D

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Male 2,576
LazyMe484: The only reason I am quoting from Wikipedia is because you`ll accept it. If you knew what it is, or bothered researching it, you`d know better.

"The Planck time is the time a beam of light needs to travel 1 Planck length. According to quantum theory, 1 Planck time should be the smallest unit of time physics can reason about in a meaningful way."

Planck Lengh undergoes the same definition I gave for time, only with lengh.

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Male 62
Woohoo! I live in Buffalo, although I honestly never would have guessed we`re one of the fastest paced. If the drivers around here are anything to be example, I`d imagine we were pretty slow!
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Female 298
me3
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Male 1,244
Damn... I live in Sacramento, one of the three slowest cities...
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Female 1,095
Yayyy one of the slowest paced cities. I-I feel so effing accomplished.
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Female 299
me too dance... this stuff is what i love to read about.
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Male 250
that was a waste of time
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Female 209
i hate and love thinking about this stuff. just like where does the universe end. everything has to have an end, so what is at the end of the universe??? freaks me out
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Female 385
ughh! 2012?! not again. remember last time time stopped? it was like... like forever!
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Male 21
But...I did know those things :-|
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Male 8,302
Of course time can stop or repeat itself, haven`t you ever heard of a Repost??? :-)
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Male 4,547
Theelgeth:
We invented words for everything. That doesn`t mean that when we stop using the words they go away.
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Male 488
one time i knocked my clock off the wall and the battery fell out. i was standing in a very awkward position for 6 hours until my mom came in and noticed that the time in my room stopped
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Female 99
couldn`t time end now if we let it? like we invented the system to classify the phenomenon that was already happening, so if we got rid of it "time" itself would stop.
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Male 886
"Hw does time stop.. If everything was at a stndstill you could still be like. "We`ve been immobile"
one
two
three
four
five"

It`s not like you`re just frozen in place, I think it`s like EVERYTHING stops. Including thought, because thought could potentially allow for the recognition of time. Anyway, you wouldn`t know time stopped, and you can`t really comprehend it, but I think you could just basically think of it as the end of the universe. (I don`t really know all that much about the subject, though...)

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Male 492
i saw something on either discovery channel or science channel about time ending. it`s due to the creation of our moon, when the moon was created it sent the earth spinning, the moon is slowly but surly slipping further and further away from the earth, as the moon moves away our turning (cannot find sufficient word) slows. the reason days were 22-23 hours long way back in dino times is because the moon was closer and "newer" once the moon has slipped away, the earth will have slowed down on it`s axis thus causing "time" to stop.

at least that`s what i surmised from the program i watched.

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Male 15
Hw does time stop.. If everything was at a stndstill you could still be like. "We`ve been immobile"

one
two
three
four
five

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Male 2,148
How very uninteresting.

Time was a term created by man. It`s the infinite series of moments in existence. It can`t stop until existence stops.

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Male 92
"But...but Sarah Palin will not have been sworn in yet."

I`d rather time end than her being president.

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Female 60
I don`t think num 20 will actually happen-it seems impossible to me.
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Male 10,440
Koala > Nope. Planck time is the shortest. Time is quantized just like everything else.
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Male 42
"Time ends December 21, 2012."

But...but Sarah Palin will not have been sworn in yet.

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Male 486
Very interesting.
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Male 92
i dont get the whole mayan thing tho, cuz didnt the mayans get slaughters by the spanish,so they couldnt finish their calendar? o.O
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Male 1,220
Just read "The Restaurant At The End of The Universe." It will tell you everything you need to know.
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Male 2,229
Perfection, Time will not end December 21, 2012. The Mayan calender, which that date is based, just resets back zero. Like the odometer on ones car.
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Male 74
eventually time will just stop? that`s so eerie, it reminds me of hyrule castle in windwaker
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Male 670
I like Ender`s Game. It`s one of the best books I`ve ever read, which for me is saying a lot since the last book I had read before Ender`s Game was in 2006.
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Male 1,788
Time ends December 21, 2012.
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Female 471
So the reason I can`t get up in the freakin` morning is because some idiots took Benjamin Franklin`s joke seriously?!?! AAAARRRRGGGGHHHHHHH
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Female 741
Flashbacks make me feel like time goes slow.

I get scared time is stopping.

But I`m just tripping.

haaaa

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Male 593
I HATE DST!! therefore, I also hate BENJAMIN FRANKLIN! AAAHHHH!!!
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Female 298
If poo was time, then id have a lot of time on my hands right now.........awww..man.....

Ehhh. What?!?

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Male 323
If poo was time, then id have a lot of time on my hands right now.........awww..man.....
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Female 198
I just fell in love with KoalaMeatPie.
Ender`s Game series > every other book ever.
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Male 7,933
Time makes my head hurt
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Female 1,329
Regarding #20, when everything comes to a standstill, after time starts back up, could time start moving backwards? They didn`t say if time would go forward or backward.
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Male 45
So with number 20, we could all just randomly stop moving and be frozen there? Or am I just a dumbass?
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Male 2,576
20 There may be an end of time. Three Spanish scientists posit that the observed acceleration of the expanding cosmos is an illusion caused by the slowing of time. According to their math, time may eventually stop, at which point everything will come to a standstill.

--- Which is actually taken from Orson Scott Card`s "Children of the Mind" - the 4th / 5th Book in the "Ender`s Game" series.

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Male 1,136
I had a good time reading this.
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Male 3,425
Goood point. People always believe something if it is different to what they were told, yet most of these crazy conspiracy theories have little or no evidence to back them up.
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Male 2,576
20 There may be an end of time. Three Spanish scientists posit that the observed acceleration of the expanding cosmos is an illusion caused by the slowing of time. According to their math, time may eventually stop, at which point everything will come to a standstill.

-- Which is actually just a hypothesis with no substantial proof. Where as the actual acceleration of expantion is backup up to the ears.

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Male 3,425
3 milliseconds a century? I noticed that the days have been dragging on lately...
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Male 2,576
18 According to quantum theory, the shortest moment of time that can exist is known as Planck time, or 0.0000000000000000000000000000000000000000001 second.

Not exactly true, it`s more of the shortest amount of time which actually means anything. shorter than that and it`s pretty much like measuring a football field in inches, it`s just not practical or usefull.

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Female 1,653
*tries to think of time-related pun*
*can`t*

That was really interesting =]

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Male 2,576
17 Einstein showed that gravity makes time run more slowly. Thus airplane passengers, flying where Earth’s pull is weaker, age a few extra nano­seconds each flight.

WRONG. It`s due to the acceleration and closeness to speed of light.

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Male 330
Einstein`s theory of relativity was inspired by lightning. I`m pretty sure.
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Male 4,547
Pretty much, yes.

So all in all it`d probably be cooler to push someone in and watch, than to dive in yourself.

It`s probably wrong of me to suggest that, but I`m fairly certain the situation isn`t going to arise.

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Male 120
Baalthazaq, so while so to me it seems that I`m pulled in there quite fast, and destroyed. But to observer out of the black holes reach, it would seem that me moving one inch would take a million years?
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Male 4,547
Lord Panda: It depends whose reference point. To us, you will never enter. You`ll seem to freeze. To you, you`ll be behaving normally.
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Female 9,475
Can I have my time back? lol
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Male 4,547
I didn`t know: 5, 6, 14, 15.
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Male 120
17 Einstein showed that gravity makes time run more slowly. Thus airplane passengers, flying where Earth’s pull is weaker, age a few extra nano­seconds each flight.

So, does it mean that if I ever wandered by accident too close to black hole event horizon, time would continually slow down due to gravitational pull, and when near enough center would stop completely?

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Male 294
Vanwa, I`d actually thought the same thing about time that the spanish folks did and the description in the article isn`t quite right.

The big thing about relative theory is that no matter what speed you are going, the speed of light is always a constant. This does some funky things with observable time and space (e.g. Lorentz Contractions, Time Dilation, Observed energy in light, etc) that comes from a result of a different frame of reference.

Let`s look at the Lorentz Contraction. As you approach the speed of light (relative to someone at your start point) your frame of reference changes, the actual observed distance between things changes and shrinks. Now imagine if you were to return to your original frame of reference.

Everything would seem to be moving away from you as the Lorentz contraction reversed itself, thus the universe would appear to be "expanding", when in fact, you`re just "slowing down" or "changing reference frame".

Still

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Male 375
Now I have some more useless facts in my head in case the Jeopardy folks ever call back.
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Male 138
Look at all the other "things you didn`t know about" links. The one about sex is really interesting. If you read it and you are against homosexuality, you will no longer have an arguement. I`m not gay, but I believe they should have the same rights as heterosexuals. What`s more is, they did not choose to be gay. (read said article)
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Male 4,807
What a waste of time that was ... I just had to say that...LOL
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Male 94
Oh and I knew 1 but still pretty interesting.
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Male 94
I knew:
9, 13, 14, 15 & 17, so that`s only 15 things I didn`t know about time, I feel cheated.
But the ones I didn`t know were pretty interesting anyway.
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Female 357
Most of that I knew... but time slowing down? That would be weird.
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Male 1,620
Link: 20 Things You Didn`t Know About... Time [Rate Link] - The beginning, the end and the funny habits of our favorite ticking force.
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