Sean Carroll - What is Time? Subscribe to Science Time: / sciencetime24 #science #shorts #time
Пікірлер: 58
@luudest Жыл бұрын
Sean Carol‘s videos are timeless.
@dennisgalvin25218 ай бұрын
The universe is timeless.
@wanderingknight10 Жыл бұрын
“Here is a cup of time…”. Lol
@JohnnyAngel8 Жыл бұрын
One thing is certain: time is of the essence.
@dennisgalvin25215 ай бұрын
His mentioning of the need to change your views when good information comes along is very true because if you think you know it all then you've stopped learning. Good video, really enjoyed it.
@maryloulindquist7453 Жыл бұрын
Thanks... that has been a question of mine. Please ignore idiotic remarks by people who have zero understanding of how difficult such a topic is to explain
@RetiredSignDude Жыл бұрын
Sean wrote a book: "From Eternity to Here" which you can buy cheap in the used form. Amazon has some; mostly decommissioned library books. The subject is so complex, that I have turned it into bathroom reading- a page here, a page there. There is massive amounts of interesting stuff; almost comprehensible
@dgodrummer8110 Жыл бұрын
thanks! another great one Paul Davies - About Time
@d.c.california1856 Жыл бұрын
I Wish I Had The Time…
@mikehall2611 Жыл бұрын
Thyme is a substance 🌿
@IzFaztАй бұрын
Time is a rythm in the 11th dimension that synchronizes strings. Time is not a 4 dimensional entity. But it has a stabilizing effect in the 4th dimension and keeps things moving, predictable for the laws of the Universe.
@anotherstupidfeature6 ай бұрын
A man creates a concept called time. Then he begun to believe it's out there somewhere. A very familiar story in the world of beliefs.
@t00by00zer Жыл бұрын
There is no dark matter. There are inadequate theories applied to anomalous observations.
@hackerman8364 Жыл бұрын
Time is something humans experience but have absolutely no clue what it is ,and the "dimensional" explanation is not adequate because: 1)time appears to be relative and influenced by gravity 2) multi dimensional object can be described without necessarely having a time dimension. Im not a physicist so correct me if im wrong
@michaelkahn8744 Жыл бұрын
Alternative Explanation of Dark Matter and Dark Energy - Newly suggested model of Universe can easily explain Dark Matter and Dark Energy Einstein’s theory of General Relativity states that spacetime is curved by the presence of mass. This curvature influences the motion other objects with mass and gives rise to gravitation. Thus, gravity is a result of geometric features in spacetime. However, we also observe gravitational effects - curvature of spacetime - in areas without any detectable mass. This has given rise to the concept of dark matter, which is matter that does not interact in any detectable way with normal matter, except through gravity. So, there is some large quantity of dark matter scattered throughout the universe, which curves spacetime and causes gravitational effects just like normal matter, but we cannot see or detect it with any known method. An alternative theory to the identity of dark matter is proposed - it is not matter at all, but rather an intrinsic curvature of spacetime. In other words, spacetime is not naturally flat. Even in the absence of matter, we observe some inherent curvature of spacetime. So, the question is now - why is spacetime naturally curved? Why is it not flat in the absence of mass? The universe is 4-dimensional, with 3 spatial dimensions and one dimension in time. Rather than consider time as a linear dimension, we can consider it as a radial one. Therefore, rather than describing the universe with a Cartesian coordinate system, we describe it with a 4-dimensional spherical coordinate system - 3 angular coordinates, φ1, φ2, φ3, and one radial coordinate in time, t. We live on the 3-dimensional surface of a 4-dimensional bubble which is expanding radially in time. Thus, the Big Bang represents t=0, the beginning of time. The crucial point is that the expansion of the universe is not homogeneous in all directions. The expansion rate at one point on the bubble’s surface may differ slightly from another point near it. The universe is only roughly spherical in 4 dimensions, the same way that the Earth is only roughly spherical in 3 dimensions. The same way we observe local mountains and valleys on the surface of Earth, we observe local “mountains” and “valleys” on the surface of the universe bubble. The inhomogeneity of the expansion of the universe has given rise to natural curvature of spacetime. This natural curvature causes the phenomenon of “dark matter”. “Valleys” in spacetime pull matter in, similarly to the warping of spacetime of massive objects. So “dark matter” is really “valleys” in spacetime that are expanding slower than the regions surrounding it. These valleys tend to pull matter in and create planets, stars, and galaxies - regions of space with higher-than-average densities of mass. Conversely, “mountains” in spacetime will repel matter away, an “anti-gravitational” effect, which gives rise to cosmic voids in space where we observe no matter. Each point on the surface of the universe bubble traces out a time arrow in 4-dimensional space, perpendicular to the surface. These time arrows are not parallel to each other since the universe is not flat. This causes points to have nonzero relative velocity away from each other. It is generally accepted that the universe is expanding faster than observable energy can explain, and this is expansion is believe to be still accelerating. The “missing” energy required to explain these observations has given rise to the theory of dark energy. The time dilation caused by non-parallel time arrows can be proposed as an explanation for dark energy. Alternatively, dark energy is real energy coming from potential energy gradients caused by non-parallel time arrows. As a sanity check, we can calculate the expansion rate of the universe based on the universe bubble model. Since the radius of the universe bubble is expanding at the speed of light in the time direction, it increases at 1 light second per second. Therefore, the “circumference” of the 3-dimensional surface increases by 2π light seconds per second, or about 1.88*10^6 km/s. This expansion is distributed equally across the 3-dimensional surface, so the actual observed expansion rate is proportional to the distance from the observer. At present, the age of the universe is estimated to be 13.8 billion years, so the radius of the universe bubble is 13.8 billion light years, or about 4233 megaparsecs (3.26 million light years to 1 Mpc). Thus, we can calculate the expansion rate of the universe, per megaparsec from the observer, as: Expansion rate = ((d(circumference))/dt)/radiusofuniverse=(1.88*〖10〗^6 km⁄s)/(2π*4233Mpc)=(1.88*〖10〗^6 km⁄s)/26598Mpc=70.82(km⁄s)/Mpc The popularly accepted empirical expansion rate is 73.5 + 2.5 km/s/Mpc, so our calculated value is close. There may be some additional source of expansion (or observed red shift) to make up for the discrepancy. For example, if two adjacent points have some gravitational gradient due to non-parallel time arrows, then light passing through these points will be red-shifted. - Cited from www.academia.edu/82481487/Title_Alternative_Explanation_of_Dark_Matter_and_Dark_Energy
@crazestyle83 Жыл бұрын
Thyme is 100% a substance you can measure 😂
@imbusylad1306 ай бұрын
Bro thought he was hilarious
@gregoryhead3827 ай бұрын
Atomic permittivity: ((Rydberg speed Rydberg electric impedance))^-1 is that one time, reciprocal velocity to ohm. 1 Coulomb atom.
@toninmiri568 Жыл бұрын
Time is space. It goes on forever. It dosent stop. It never began. It will always be here. See time and space are both rhe same
@wearethefruitoftheuniverse Жыл бұрын
Time is change. What changes? The flow of substance. Therefore substance moving can account for time. But where is the energy coming from once you reach the bottom? Perhaps a massive pulsating toroidal flow powers everything, down to the magnetic fields that look like it as well
@nakedb1976 Жыл бұрын
I'm drinking a hot cup of time right now. It's good to the last drop.
@dennisgalvin25215 ай бұрын
Time doesn't have temperature
@MojiWord Жыл бұрын
Time is like Faith! Like Faith, Time is a (soft-ware) soft-substance of changing states...with a special formation method alongside space as placeholder i.e. SPACETIME. Time like Faith is the evidence of things not seen i.e. repulsive gravity, force with the effects of space expansion and time evolution. These are essentially particles of special formations! Time's measurements, like Faith's, can be compared to the size, such as size of a mustard seed or Planck's distant (velocity*time), but in the context of Spacetime, can be compared to a cup, a valley, etc. shapes with curvature with or without the presence of a mass.
@user-oo8kp6jk5h4 ай бұрын
We could say time is movement otherwise there wouldn’t be time if everything was stationary
@ez1803 Жыл бұрын
The universe and everything in it is expending, that's time
@dennisgalvin25215 ай бұрын
That's not time, it's just the progress of existence?
@Kevin-production Жыл бұрын
Using quantum law you can argue that time can have more than one dimension! And it doesn’t complicate any understanding of the world we might have, it just explain it differently
@urieleaabzu Жыл бұрын
Imagine if time turned out to be a substance, lol
@agut5587 Жыл бұрын
Time is relative, the human brain accepts it because it's been trained to. All other living creatures are guided by the seasons. Time does not exist.
@dgodrummer8110 Жыл бұрын
so, perspective is everything our realities are based on...??? I concur.
@MojiWord Жыл бұрын
Frogs 🐸 know what time ⏲️ to call for mating...they only call at night time!
@lucidmoses Жыл бұрын
even if time could move in the other direction there would be no way to measure it.
@dennisgalvin25215 ай бұрын
You could, just get a clock that goes in that direction.
@chhewee Жыл бұрын
My theory is that time is not linear but is the universe itself,shaped like the infinity sign,♾️ with endless grooves on its plane.Which are different timelines.And some advanced species know how to move or cross into different ones, using various methods that humans will eventually remember.😊
@MrBaconHawk Жыл бұрын
Eh, something like that 🤣
@chhewee Жыл бұрын
Addendum :I do lean more towards the circle with infinite circles model, and in the center is the creator. Also wormholes could be portals to different timelines created by friction rubbing against the other timeline next to it. 👍
@Sarconthewolf Жыл бұрын
Time is speed or expansion of the universe. It's how fast you are moving through the universe. Speed and time are one in the same.
@joeyhall3333 Жыл бұрын
Time only exists in the minds of humans😂❤
@leroy.jackson.480410 ай бұрын
Humans consciousnessly measure time, animals instinctly measure and react to time.
@adminservicesupdate97646 ай бұрын
Time is experienced by many creatures. Many animals know simple cause and effect, and understand a particular action begets a particular response. That understanding alone is a basic understanding of time. It is conceivable that when a bear returns to a garbage can one night after finding food there, it understands finding food occurred in the past, and the bear understands the past is not the present.
@shlaugen Жыл бұрын
I want a cup of Time please. Hold the age
@behnamzadeh1936Ай бұрын
Universe dont move only inflation move's in multiverse.behnam multiverse.i let you know because you like space and time
@jackbradley4737 Жыл бұрын
People on KZfaq comments always think they’re smarter than physicists.
@stella_7mccarty6499 ай бұрын
Look like endoscopy
@pelasgeuspelasgeus46343 ай бұрын
Do you have an answer to what is causing a second to have that specific duration? Also, does a second have the same duration across the universe? If you can't answer these then don't speak.
@Chicxulub65M Жыл бұрын
Time is money.
@hannah.M736 ай бұрын
truth
@GiganticMythicalSpaceFishWhale20 күн бұрын
Would tìmè stìll èxìst if it doesn't flow?
@hondro74303 ай бұрын
So time is not space or matter? So time is time? I feel like I missed the point, or there was no point.
@kindabugz Жыл бұрын
4️⃣7️⃣
@richardyoung5293 Жыл бұрын
SPACETIME IE TIME IS ALOT MORE THAN A LANGUAGE HOMIE -TIME IS PHYSICAL-ITS IS PART OF THE GRAVITATIONAL FIELD PRODUCED BY MASSIVE OBJECTS -MASS WARPS SPACE TIME THUS TIME PASSES MORE SLOWLY CLOSE TO A MASSIVE BODY LIKE THE EARTH -THE MORE MASSIVE THE OBJECT THE SLOWER TIME PASSES
@genomatrix1Ай бұрын
Kinda sketchy, missing some facts, but all in entertaining
@johnsontako Жыл бұрын
Here is a cup of 3 dimensions. Here is a cup of the forth dimension. Here is a cup of gravity. Here is a cup of dark energy. The truth is we are making things up.
@NicolasLekai Жыл бұрын
dark matter isn t particles...it s the matrix of possible switch settings. like a block chain . and gravity is the force that puts the switches into motion .