What is the speed of dark?

[outkastic2001]

time is da life line to everything in existence/universe. nothing could exist with out time, not even black. it's a lot deeper than a couple of numbers on your wrist watch



no such thing as a big bang. time/universe is infinite. neither one could exist without each other. If it did have a starting point, at what time did it start? There must be time to start time. there have to be time prior to that start time, cuz logically it's impossible to have a present without past. stop believing all these bullshit theories, cuz simply mathematics ain't never lie. plus dark matter is apart of da universe so there's no such thing as da universe expanding. it would be impossible for da universe to not exist in certain areas, cuz that would mean time would cease to exist in that imaginary region, which is impossible.

 

[Bigmanblack]

bump

 

[Cristar Mymine]

Avoid all of tekk's posts, please.

 

[mk23666]

There is no speed of darkness. Darkness just is.
Without light there is still darkness and even with light all around darkness remains in the form of shadow and shade. Light only reveals the varying amount of darkenss at any given moment or place.

Darkeness doesn't move, it's everywhere at once ... it just is. Light moves through the darkness not the other way around. Darkness doesn't expand, light retreats or moves to another area of the darkness.

Darkness can be thick or heavy, light or soft. Darkness can be all enveloping or confined to a spot. Darkness at any given time is good, bad and neither ... all at the same time.

Darkness is the framework on/in which the stuff of the Universe exists on/in. Darkness was the first, and will be the last. Darkness IS Alpha and Omega.

Embrace the dark ... Be darkness my friend.

 

[OLDSCHOOL]

Ok let me change it up

what is cold
do blind people dream if so about what if they have never seen anything what are their dreams about

 

[mk23666]

Ok let me change it up

what is cold
do blind people dream if so about what if they have never seen anything what are their dreams about

Cold is the opposite of hot. A lack/lessening of energetic activity.

Blind folk who have never seen anything in their life dream in darkness, sounds and sensations only ... they see nothing then too. Kinda make you wonder next, "How do they know when they are awake?" But then that could be asked of the sighted too.

 

[jopa65]

The Speed of Dark is the direct inverse of the Speed of Light.

Basic Law of Physics = Every Action Has An Equal and Opposite Reaction.

Light molecules (photons) need to displace space in the void ... light photons travel at a certain speed (100,000 miles a second or some crazy shit like that) and once those photons are gone, Darkness re-envelopes the void at the same speed.

It Darkness re-enveloped just a fraction too early, we'd never see the light. A fraction too late, and we'd see a "light pipe" like a shutter on a Camera as it closes its iris.

What's even crazier when you think about it ...
(1) The light we see from the stars tonight, that was cast in some cases 1,000 years ago. It's JUST reaching the Earth now.

(2) Traveling at LIGHT SPEED, and excluding the Sun, it would take us ~4 years to reach the nearest star Proxima Centauri.

4 years at LIGHT SPEED THE ENTIRE TIME.

Makes you think how small and insignifcant we are.

Most of what you have said here is utter nonsense.

In physics, action = reaction is mechanics. That's it. Enough with this speed of dark thing. Thank goodness that Charlie Brown guys sit this ridiculous thread straight.


"... need to displace space in the void... once those photons are gone..."

What!? Displace space? Da fuck are you talking about man?

Actually Darkness is faster than Light.. The expansion of the Universe is proof of that.

Darkness is spreading the fastest.

But there is no speed of darkness.

The expansion of the universe is proof of the speed of darkness? WTF?

You say "...Darkness is faster than light..." Then you say "But there is no speed of darkness"

I'll jst assume that you were high when you posted this.

The speed of light IS NOT a true constant because light has mass. The photon's, as light as they are have some trace masses and it can be acted upon and slowed even stopped in the presence of great gravitational forces.
That's why light can't escape a black hole.

Time is the one and only true constant. Nothing changes or stops time. Time cannot be transformed or bent.

When you bend space, you bend DISTANCE not time. The time that it takes you to travel that distance is shortened but time itself has not been changed.

I walk from NYC to DC ... it takes me a week.
I drive from NYC to DC .... it takes me 3 hours.
I fly from NYC to DC ... it takes me 50 minutes.

Time hasn't changed, but the amount of time I used to travel that distance has.

If I could find some magic portal to shorten the distance, I'd still be using time at a constant rate, just less of it.

Photons have zero mass. Every modern day physicists will tell you this. Any other way of interpreting photons as having mass is archaic.

Even if you use the argument of Energy, E = hf ; E = mc^2, where m = mass.
Or, the argument of photons have momentum (p), p = mv, where m = mass.

Both cases describe "relativistic mass", an ancient outdated concept. In modern physics, the true mass of a particle is its "invariant mass", m = sqrt{E^2/c^4 - p2/c2}. Which is = 0 for a photon.

And if you care, you can do the simple algebra to show that m = 0, if E = pc, c = speed of light.

The reason why photons can be deflected by a strong gravitational field or "can't escape a black hole" is NOT because they have mass but rather because they move along geodesics and the path they follow is independent of their mass. Also, photons have momentum and energy (vectors) which they couple to gravity which is why (in principle) they can generate curvature in space-time.

An understanding of General Relativity would have made this clear to you.

In physics:

THE SPEED OF LIGHT IS A PHYSICAL FUNDAMENTAL UNIVERSAL CONSTANT.

TIME IS A FUNDAMENTAL QUANTITY/QUANTIFIER.


Now, if you want to address the nature of time, then that's an issue of philosophical position and empirical deduction.

The End.

Been tryin to explain this to people Einstein got it fucked up

How?

time is da life line to everything in existence/universe. nothing could exist with out time, not even black. it's a lot deeper than a couple of numbers on your wrist watch

no such thing as a big bang. time/universe is infinite. neither one could exist without each other. If it did have a starting point, at what time did it start? There must be time to start time. there have to be time prior to that start time, cuz logically it's impossible to have a present without past. stop believing all these bullshit theories, cuz simply mathematics ain't never lie. plus dark matter is apart of da universe so there's no such thing as da universe expanding. it would be impossible for da universe to not exist in certain areas, cuz that would mean time would cease to exist in that imaginary region, which is impossible.

I will only address the part i highlighted because everything else you typed is rubbish and not note worthy.

As to the question of having a starting point prior to the starting point, this is a classic argument of causality and the "beginning" of time.

The human brain has evolved to perceive events and comprehend phenomena deterministically (cause and effect) in part due to our social orientation but primarily because of our "scale" of perception.

At the most fundamental level of physical description (the sub-atomic scales) events occur "indeterminately" - according to Quantum Theory/Mechanics.
Basically, shit happens. Causes with no effects, effects with no cause.

These "quantum events" are observable empirically measurable and testable phenomena that science harnesses quite routinely in technologies ranging from everyday electronic devices to chemical analysis.

Schroedinger, Bohr and Feynman couldn't understand it and I sure as hell can't.

My attempted answer to this is that the "beginning" of time was a quantum event. Then again I tend to view it more as an "emergence" of time.

 

[kdogg3270]

what is the speed of light (or sound for that matter) underwater?

 

[charlie dark]

I thought dark was lack of light as opposed to something tangible!!!

 

[charlie dark]

The speed of light IS NOT a true constant because light has mass. The photon's, as light as they are have some trace masses and it can be acted upon and slowed even stopped in the presence of great gravitational forces.
That's why light can't escape a black hole.

Time is the one and only true constant. Nothing changes or stops time. Time cannot be transformed or bent.

When you bend space, you bend DISTANCE not time. The time that it takes you to travel that distance is shortened but time itself has not been changed.

I walk from NYC to DC ... it takes me a week.
I drive from NYC to DC .... it takes me 3 hours.
I fly from NYC to DC ... it takes me 50 minutes.

Time hasn't changed, but the amount of time I used to travel that distance has.

If I could find some magic portal to shorten the distance, I'd still be using time at a constant rate, just less of it.

I would have to agree with this because if you hold up a mirror to a light source that light will be reflected in another directin for this to happent the light has to hit the reflective surface stop and bounce back in the other direction....no?

 

[jopa65]

what is the speed of light (or sound for that matter) underwater?

It's "slower" underwater than in a vacuum. However, I prefer to qualify it as the TRANSMISSION rather than speed of light being slower. Which depends on the optical density of the medium its in because the photons (electromagnetic waves) interact with the material (atoms, molecules) that make up the medium.

The ratio between the "speed" of light in a vacuum and in a given medium is the refractive index. Also look up Fermat's Principle if you wana go in.

Sound travels at different speeds in different mediums because the waves are mechanical vibrations or oscillating compressions or stresses determined by the medium in which they're propagated.

I would have to agree with this because if you hold up a mirror to a light source that light will be reflected in another directin for this to happent the light has to hit the reflective surface stop and bounce back in the other direction....no?

No. It doesn't "stop" per se. It just changes its path, whether its reflected or refracted. However, you can slow down pulses of light enough to "stop" or "freeze" or "trap" it in a low energy medium like a Bose-Einstein Condensate or a crystal.
http://www.livescience.com/common/media/video/player.php?videoRef=itm1005_freezinglight

 

[charlie dark]

No. It doesn't "stop" per se. It just changes its path, whether its reflected or refracted. However, you can slow down pulses of light enough to "stop" or "freeze" or "trap" it in a low energy medium like a Bose-Einstein Condensate or a crystal.
http://www.livescience.com/common/media/video/player.php?videoRef=itm1005_freezinglight

I dunno man!
If your going 10mph in one direction, how is it possible to go in the opposite direction without stopping if only for a fraction of time?

 

[kdogg3270]

It's "slower" underwater than in a vacuum. However, I prefer to qualify it as the TRANSMISSION rather than speed of light being slower. Which depends on the optical density of the medium its in because the photons (electromagnetic waves) interact with the material (atoms, molecules) that make up the medium.

The ratio between the "speed" of light in a vacuum and in a given medium is the refractive index. Also look up Fermat's Principle if you wana go in.

Sound travels at different speeds in different mediums because the waves are mechanical vibrations or oscillating compressions or stresses determined by the medium in which they're propagated.


good answer

 

[jopa65]

I dunno man!
If your going 10mph in one direction, how is it possible to go in the opposite direction without stopping if only for a fraction of time?

Think about wave-particle duality of light. Light is a wave and you can think of reflection as a redirection of the wavefront.

Or

When the photons/light-waves hit the surface of the mirror they interact with atoms that make it up causing little oscillations which propagate from atom to atom through polarization giving rise to the emission of secondary photons/light-waves which culminate into the reflected photons/light-waves. Oh, and some of it is refracted.

It's essentially a transfer of energy. Nothing ever stops. Everything is always moving.

Again, if you really wana go in, Richard Feynman's Path Integral Formulation in Quantum Electrodynamics describes this type of interaction.

Plus you could always do a Google search and you might come up with a simpler answer.

 

[Bruh In Law]

Gotta get high as hell before you come in this thread

 

[jopa65]

Bump

 

[oolong tea]

Bump

Thanks mister 15 day guy. Don't know how we'd ever end this thread without you.