what is first time or space?

Question

out of mass,time,energy space

Answer 1

If I am not mistaken ... i think the chcken came first.

Answer 2

No one really knows, but string/M theory has set the background for some really bizarre WAG's.

First, there is a minimum time interval. It's called Planck Time, which is...

"In physics, the Planck time (tP), is the unit of time in the system of natural units known as Planck units. It is the time it would take a photon travelling at the speed of light in a vacuum to cross a distance equal to the Planck length.[1] " [See source.]

A Planck Length (lP) is about 1.6 X 10^-35 meters. Then, by definition, tP = lP/c; where c ~ 300,000,000 m/sec the speed of light. Thus we have tP = 1.6 X 10^-35 m/3 X 10^8 ~ .55 X 10^-43 sec.

Although we could mathematically divide tP = lP/c by some number n and get tP/n, the result would have no real physical meaning because tP ~ 10^-43 sec is as small as it gets. That is, Planck Time is the smallest real time if lP is the smallest length that exists in our universe as string/M theory suggests.

Second, Brian Greene, of "The Elegant Universe" fame, WAGs the possibility that our big bang, the birth of our known universe, came from two parallel universes colliding. Their changes in momentum then let loose the enormous energy that became the BB in our half of the two parallel universes.

But this presupposes a change in position over some duration. If that is the case, something at least akin to time must have existed before the two universes collided. Otherwise there could be nothing like motion or, similarly, velocity which is v = delS/delt; where delt is the change or passage of time and delS is the change in position.

[NB: One other possibility exists: quantum jitter; where quanta pop into and out of space spontaneously and instantaneously without the passage of time. But such phenomena have not been observed or measured for anything larger than subatomic particles; certainly not for universes.]

Now to your question. If by "space" you mean our known universe, then time pre-existed that if the collision of parallel universes did in fact cause the BB. That follows because somethng at least like time had to exist for those two big guys to collide. So time came first before all that mass and energy of the big bang.

Answer 3

Well, I don't really know. But I personally believe that they are all intertwined. E=mc^2 means that energy and mass are same fundamental stuff in different forms. When energy lumps together into mass, it warps space and time, and causes things to accelerate toward it. This is a deep question.

Answer 4

First I'd like to state that I am not a physics professor or researcher or anything kind of authority on space-time. I'm merely someone whom has read quite a lot of literature on the subject and am offering my opinion as to what I believe.

Theoretically, time existed prior to space (the universe). Space (the universe) would not have begun without an infinitesimal passage of time. What we refer to as time has always existed with space (the universe) being formed within this time. However, as intelligent life, we humans developed methods for measuring the evolution of the universe by applying time frames (days, years, eons, etc.). In essence, time is but a measure of the rate of evolution of the universe which we apply to measure how evolved it has become.

In conclusion, no time = no space.....no space = no need for time

Answer 5

this question doesn't make sense...
you should rephrase it.

---edit 1
to the retards that answered above, there is no smallest measure of time, but i can name some smaller than a nanosecond...picosecond? femtosecond? attosecond? zeptosecond? yoctosecond?
now yocto is the smallest SI prefix, but not necessarily the smallest measurement of time.

Answer 6

a nano second.