What is Time?

[seer]

What is a clock? Something physical, that vibrates, that keeps time. Time is just about counting vibrations of a physical object.

No, from what I read Time can actually slow or speed up an atomic clock. And like in my OP gravitational waves influence or change time.

[Sparko]

Um you need to take a physics class. Electrons and other elementary particles are made up of quarks, which are made up of charms, which are basically energy packets. Matter is concentrated energy, to put it simply. Thus E=MC2

[firstfloor]

No, from what I read Time can actually slow or speed up an atomic clock. And like in my OP gravitational waves influence or change time.

I think you are referring to time dilation which is how the clocks of different observers (different in terms of motion or gravity) run at different rates from the point of view of the other observer. In the observers own locality there is nothing to tell him that his own clock is running differently to normal.

[firstfloor]

Electrons are made up of quarks, ...

Actually, no, electrons are thought to be elementary particles.

[Sparko]

Actually, no, electrons are thought to be elementary particles.

I guess you are right. They are leptons. oops.

[JonF]

Um you need to take a physics class. Electrons and other elementary particles are made up of quarks, which are made up of charms, which are basically energy packets. Matter is concentrated energy, to put it simply. Thus E=MC2

Hadrons are comprised of quarks. Many subatomic particles are not hadrons, especially electrons.

"Charm" is physicist humor for one flavor (type) of quark; there are up, down, top, bottom, strange and charm.

[JonF]

No, from what I read Time can actually slow or speed up an atomic clock. And like in my OP gravitational waves influence or change time.

Time does not slow or speed up any clock. Velocity relative to the observer, acceleration, or gravity changes do. Any method of measuring tie is affected. It's not just as if somehow your grandfather clock's pendulum swing rate gets changed, what the clock measures is getting changed.

[Sparko]

Hadrons are comprised of quarks. Many subatomic particles are not hadrons, especially electrons.

"Charm" is physicist humor for one flavor (type) of quark; there are up, down, top, bottom, strange and charm.

yeah I realized my errors.

[klaus54]

Are you just kidding? If not, please explain what you think "physical" should be defined.

Your post was unintelligible. You might want to practice a clearer writing style as a well as clearer thinking.

To answer this post, what's NOT physical in our (or any!) universe? How would detect the non-physical?

And I reiterate that this post is garbled nonsense:

What the heck is meant by physical? If something like energy affects the thermodynamics of a hot object, why on earth is energy to be regarded as n-o-t physical!? eta and what the heck happened to E = mc2!?

[37818]

For simplistic reference, a neutron can decay into a proton, electron and an anti electron neutrino. Where a down quark decays into an up quark, an electron and the anti electron neutrino.

[Truthseeker]

Your post was unintelligible. You might want to practice a clearer writing style as a well as clearer thinking.

To answer this post, what's NOT physical in our (or any!) universe? How would detect the non-physical?

And I reiterate that this post is garbled nonsense:

Sorry. For one thing, I thought everybody would understand what "eta" means: "Edited to add the following."

[Truthseeker]

Seer, please ponder this question until you see what's wrong with your use of the phrase "not physical":

To answer this post, what's NOT physical in our (or any!) universe?

[klaus54]

Energy is certainly physical. What else would it be?

[bo]

I suppose, but it still seems fundamentally different than the other distance dimensions. Time can only ever be traversed in one direction, for example. (Right? )

Is it more or less a matter of convention? Or is it making a profound statement about reality that I'm missing?

Hi. I think if we imagine a spaceship, its trajectory at any given time is 1-dimensional space, but the space itself is multidimensional. The same with time. Our Universe is like a spaceship or a river. At any given point of the flow, the flow direction is 1-dimensional space, but the flow itself is multidimensional. If our Universe is a flow (like a water in the river), it can flow only in one direction at any given point. But a swimmer using force can swim in any direction.

[bo]

One more interesting thing about the Universe... It is like a river, maybe even the river without source and without mouth, but it can still have its begin and end in other time dimensions. Assume you are digging a channel and then the water fills it from underground and flows. Looking at the channel, you see where the water flows from and to, but it is neither the real beginning nor the end. You even can build boats and submarines (2-dimensional and 3-dimensional time travelers) and change any part of the channel as you like, use drengers to form islands, etc. But all those changes are incomprehensible for you until you jump out of the water.