Is viscosity just a function of time?
469523
Yes, but something with a high viscosity in "normal" time would still have a high viscosity reletive to other substances in "fast-world" time.  Like any other form of measuerment, it can not stand alone without reference objects.\n\nSomething flows "slowly" only when compared to things that flow faster than it.  For example when I'm working on low-mass stellar evolution, anything that doesn't take a million years to happen I tend to describe as "a very fast event"
944027
*sigh* Another debatable query enslaved to the limited senses of us mortals, yet forced in all its calamity by our fascination. Here goes.\n\nEinstein shook the fundaments of the Scientific Community when he introduced his Theory Of Relativity and Special Theory Of Relativity back in 1905. He was considered everything from Nostradamus to Jesus. This pinnacle of his life was not attained in mere pondering. Let me expalin to you this fragment of his theory.\n\n  In theoretical suppositions, the space-time connoction bear themselves in alliance. Any change inflicted on one dimension is prone to affect another.\n\n When we say that we will only age a bit, while the Earth has conquered years and decades, we mean to say, that, time being relative to every individual, along with its flow, may hasten up, if we start to function at a velocity of extremes.\n\n If time IS relative (No humane way to confirm), then a higher velocity achieved could result in a hastened flow in the fluid of the "Fourth Dimension" of time. Such relativity was all that he wished to make us understand.\n\n As far as the aging is concerned, provided that we have armour to protect us from the friction effects of such a speed, we are going to age alright. Since our molecules are being relative to the molecules of the rest of the universe, they are not going to change much. Yet RELATIVELY they will alter a decade or more (backwards)!\n\n*sniff* Einstein, I salute you!
18016
Since solids do not flow, then no for most.  Although, not all solids are the same.  Looking at amorpheous solids such as glass and newer metals that were supercooled as a liquid.  Glass has an extremely high viscocity because it is a liquid that is flowing really slowly.  If you look at the case of the cathedrals built in the old times, glass is thicker as it is closer to the ground.
527798
viscosity is the stickness/thickness of liquid. It is a constant for each liquid in relation to its temperature because when you heat stuff up, it flows a little better.\n\nexample: if you heat up honey it goes from being really viscous to flowing better than water at near boling temperatures. You can also look at metals this way too, if you met metal, the hotter the metal, the faster it will flow to where  ever you are trying to get it to go. Lava is a good example as well.
138504
not technically in the way we know it. According to Einstein time as the measure of distance in the figurative Universe can be turned back by exceeding a speed of the speed of light squared times the mass of the components at this speed. Read steven Hawking a history of time to learn further on the subject. Time in terms of the chemical equation, namely reactants to products can be reversed by this step. However, in respect to redoing certain moments in life, no. The only force which can do that is God.
1012627
Kinematic Viscosity, ν, so called because it relates to the motion of the fluid. you know "kinematics" means "motion". it units are length^2/time or m^2/sec. Kinematic viscosity is defined as the dynamic viscosity divided by the density of the fluid..\nTherefore, if density changes with temperature or pressure, the kinematic viscosity will also change. For gas applications, kinematic viscosity is a strong function of pressure.\nBecause density is an intrinsic property in itself, it can be argued that kinematic viscosity is not a precise measure of internal fluid friction. However, kinematic viscosity is the preferred unit when the shear stress and shear rate of the fluid is influenced by the density. \nAn example of this is the measurement of viscosity using gravity techniques such as a cup with a small orifice in the bottom. With this type of measurement device, a specific volume of fluid passes through the orifice and the time it takes for the volume of fluid to pass through the orifice is proportional to the fluid viscosity. However, it also depends on the density of the fluid since the more dense the fluid, the faster it will flow through the orifice. The property being measured in this example is then the kinematic viscosity and not the dynamic viscosity. I think you understand why the viscosity calculated in the above example is called as kinematic instead of dynamic.
226812
Wouldn't that depend on the amount of salt in the water? Or are you talking specifically about fully saturated water?\n\nThe viscosity of water is 0.890 × 10^-3 Pa*s.\nThe viscosity of our ocean is 1.002 x 10^-3 Pa*s.
136568
well, we all assume that time flows in one direction and one thing follows another. Maybe that's just the way we see it. Try to imagine that you were a cartoon, 2D on a page, you have no concept of the 3rd dimension. If we could se everything that had happened at once, time wouldn't be linear but I digress. In effect non-linear time means that one thing would not necessarily come after the other e.g. I wrote this 'before' you asked the question.
211808
Visocity of fluid depends on---\n* Temprature--From everyday experience, it should be common knowledge that viscosity varies with temperature. Honey and syrups can be made to flow more readily when heated. Engine oil and hydraulic fluids thicken appreciably on cold days and significantly affect the performance of cars and other machinery during the winter months. In general, the viscosity of a simple liquid decreases with increasing temperature (and vice versa). As temperature increases, the average speed of the molecules in a liquid increases and the amount of time they spend "in contact" with their nearest neighbors decreases. Thus, as temperature increases, the average intermolecular forces decrease. The exact manner in which the two quantities vary is nonlinear and changes abruptly when the liquid changes phase.\n\n* Pressure--Viscosity is normally independent of pressure, but liquids under extreme pressure often experience an increase in viscosity. Since liquids are normally incompressible, an increase in pressure doesn't really bring the molecules significantly closer together. Simple models of molecular interactions won't work to explain this behavior and, to my knowledge, there is no generally accepted more complex model that does. The liquid phase is probably the least well understood of all the phases of matter.\n\n* material--Viscosity is first and foremost a function of material. The viscosity of water at 20 °C is 1.0020 millipascal seconds (which is conveniently close to one by coincidence alone). Most ordinary liquids have viscosities on the order of 1 to 1000 mPa·s, while gases have viscosities on the order of 1 to 10 µPa·s. Pastes, gels, emulsions, and other complex liquids are harder to summarize. Some fats like butter or margarine are so viscous that they seem more like soft solids than like flowing liquids. Molten glass is extremely viscous and approaches infinite viscosity as it solidifies. Since this process is not as well defined as true freezing, some believe (incorrectly) that glass may still flow even after it has completely cooled, but this is not the case. At ordinary temperatures, glasses are as solid as true solids.\n\n* Time--Some fluid viscisity are also affected by time like\n                            A thixotropic fluid undergoes a decrease in viscosity with time, while it is subjected to constant shearing.\n      This is essentially the opposite of thixotropic behavior, in that the fluid's viscosity increases with time as it is sheared at a constant rate.\n* Shear rate also affects fluid viscosity. Dilatant are examples.
708348
The only way you could answer yes to this question is for an outside observer. What I mean is, inside a strong enough gravity field, time will appear to slow down from an outside observer's point of view. However, you will not notice the effects from inside and time will pass normally for you.
1182812
Viscous dissipation of fluid means the fluid is relatively thick in consistency.  The fluid will flow at a slow rate because of this.  It's the difference between the rates of flow of fluids such as water and motor oil or honey.  The greater the viscosity, the slower the flow.  Greater viscosity will cause the fluid to flow at such a slow rate that the fluid will appear to coat the surface that it is on.  Again, motor oils of varying viscosities will display this characteristic to lesser or greater degrees.
109422
This is pretty close to an question that was asked previously.\n\nI presume you mean Velocity= Distance/time, and you want the derivatives with respect to time t (for velocity in a 1-dimensional space; velocity strictly speaking is a vector and needs magnitude and direction). \n\nThe first derivative of velocity with respect to time is called acceleration. The second derivative of velocity with respect to time is called the boost or jerk. \n\nYou have not stated if distance D is a function of time or not. Assume that D is a constant. \n\nThen dV/dt=-D/t^2 is the acceleration\n\nAnd d/dt(dV/dt)=2D/t^3 is the boost.
212744
torque is only a function of speed if you are refering to the mechanics of generating torque. IE. engines have optimal speeds for generating maximum torque. but torque is a measure of twisting force, and is (in the physics world) independent of speed.
250190
This is really simple stuff. Newtons is force, seconds is time, meters is length, and meters per second is length per time, or velocity.
168069
assuming your statement is true, then\na=k/t\nwhich gives t=k/a\nso time is a nonlinear function of acceleration.\nGraphically, the plot of a versus t is not a straight line (it is a hyperbola)
1085576
F = d/dt(mv) [the time deravitive of the momentum] = dp/dt  where p is the momentum\n\nWork = Energy = F x distance\n\nPower = Energy/time\n\nPower = (F x distance)/time\n\nPower = [(dp/dt) x distance]/t\n\nremember dp/dt = d/dt(mv) = m dv/dt + v dm/dt
1163741
time is a relative thing....it's a measure that isn't even the same  in normal situations.as an example:u are sitting on a bench, you hae your clock with u,someone else ifs flying in a supersonic, he has his clock with him,in a hundred years or so his clock will show less than yours.time travel...well that's another complex thing...you see if somone were to travel at light speed it would gain a lot of time comparing to someone travelling at sublight speeds.there is a theory that if someone were to orbit the earth let's say , in it's oposite spining direction at a faster than light speed it would reach it's start position...BEFORE the actual start time, thus travelling in the past , but faster then light speeds can't be reached .other temporal anomalies apear in wormholes.