Stephen Hawking - Time Dilation

[BlackOpAim]

i want to see more... send me a link to goes to the complete episode

[Honeybadger205]

Mechanics aren't powered by time, they are powered by energy. But time is still tiny fractions faster or slower in other regions or planets in the galaxy, but the clock or watch would show the time on Earth.

[frogfan101]

i think that time doesent slow your movents down but makes the movments of the outside world faster, and that poeple who are moving fast are really moving normally according to them and so are you when they see you

[frogfan101]

okay a clock is a machiene with runs at at a crtain speed so how can something like time outside effect it. time would have to be energy in order to have enough power to slow down the clock, more like friction. and that would mean that the true time is always the same but there its forced to be slower wich makes you age mormally because machienes humans and time dont seem to be connected anywhare

[Arvilian]

@frogfan101 how does it run at a certain speed? Is time really "outside"? If something is outside of time, how does it exist on the time-space continuum?

[shis0striker]

@frogfan101 time isnt clocks clocks "measure" time just like rulers measure distances... time is another dimension ( i guess) like space and stuff the pyramids dont slow down the clocks but the time itself

[frogfan101]

how can somthing mechanial  be affected by something totally different

[KorrazonCold]

Time starts now fool.

[opaldragon75]

An honest question: Does time dilation prove time beyond that which can be explained way by the laws of motions and energy?

say if a ship, traveling a 90% the speed of light, passes by a station, sitting still, by a 1 cm; will that cause a tear or a distortion in time due to the difference in temporal speed?

[Kabitu1]

@opaldragon75 The problem with all theories of physics, is that they are limited to "normal" cases. Newtons laws does not work at great speeds or on subatomic level. I guess Einsteinian physics have similar limits.

That is a very extreme case you are presenting. I dont know. I wonder if even the people at CERN could answer that. Perhaps we dont even have models fit for such cases.

[DevilMayFry]

In a speculative fiction book I read, Anathem, the universal rule of causality is kept intact because any time someone tries to travel back in time, they instead travel into another universe, so their presence cannot ruin cause and effect in their own universe.

[guitarriff1988]

So what about sky scrapers like the World Trade Center or Empire State Building would they slow down time?their mass is 10x heavier then the great pyramids of Giza cause it's all iron.

[WeAreStarStuff51]

@guitarriff1988 The time dilation caused by the pyramids in the video was just an analogy showing the relationship between mass and time dilation. They do slow down time (, as would skyscrapers, since they have mass), but by an infinitesimally small amount. I guess they thought it'd be easier to explain using a smaller mass like the pyramids rather than an object that really does cause signifcant dilation like a planet or black hole.

[guitarriff1988]

@WeAreStarStuff51 Ok,Are those camera affects 4:06 slow motion - 4:51 fast motion

For example if i'm running close to the pyramid would my buddy from further distance see me run that slow 4:06 or if i'm running 15 mph would it be 10mph to him?

And if he's running further away from the pyramid would i see him run that fast 4:51?or if he's running 15 would it seem like he's running 20mph to me?

[WeAreStarStuff51]

@guitarriff1988 If you were to try this with the pyramids you would see that the effect they portray in the video is exaggerated billions of times (3:54) Time would slow down, but it would be impossible to notice without incredibly precise clocks. If you were orbiting a black hole and had a telescope powerful enough to see people on earth then you should see a similar effect to the video. So the mass needed to see this kind of effect is immense and the pyramids, nor the earth are massive enough.

[guitarriff1988]

@WeAreStarStuff51 Oh ok thx buddy you helped out a lot :-) my physics teacher also said if i'm in the event horizon and my buddy out side of the BH, he sees me moving slow and slow and i'll freeze as i get close to the edge then i'll turn red and fade,but i'm all ready in the hole. so to him it's pretty much an optical illusion?Isn't the even horizon that glowing disk around the black hole? :-)

[dresio666]

I experience time dilation every day in my work

[Levitikai]

This made very little sense. Time dilation occurs when objects move closer to the speed of light. It's because of the speed the satellites orbit the Earth that causes them to have slower internal clocks than those on Earth's surface.

[jamariooo]

@Levitikai this has nothing to do with that, i think that its cause strong gravity somehow bends time

[bassindeface]

@Levitikai The satellites are not traveling fast enough for the speed to have an effect. It is the earth's mass that creates this phenomenon.

[Levitikai]

@bassindeface I understand it know after some thought. This is due to gravity pulling on light, isn't it? As we are closer to Earth, we experience more time dilation than the satellites because they are less effected by the gravitational pull and so their clocks can go faster than our own. I only realized this when I was thinking about black holes a week ago.

[nickmooreimages]

Since we are closer to the earth than satellites are, why do the satellites experience slower time?

[WeAreStarStuff51]

@nickmooreimages Satellites experience faster time

[rubikfan1]

thats why heavy people run slower,

[karchun9860]

@rubikfan1 U mean heavier people see people running much faster than they are - :p