The wind is a powerful force in nature, why can't we physically see it?
88862
when you consider that wind is comprised of oxygen, nitrogen, carbon dioxide, and other gases with little to no color the question becomes how could you see wind. sure you can see results of air circulation like moving plants, dust, and papers moving, but you are not seeing air or wind merely the results of it moving. smoke in the air is about the closest you can get to seeing air itself move.
916449
probably gravity. it's the most likely. without gravity there would be no wind, running water or sea waves. think about it for a second it'll make sense
639560
The wind is just the observable and measurable manifestation of air molecules being drawn en masse from one place to another by a differential in atmospheric pressure between the two places.  What causes most of these pressure differentiations is (a) earth's rotation creating friction between the lower and upper components of the atmosphere, and (b) temperature gradients in the atmosphere and the oceans caused by the heating action of our star, the Sun.\n\nLet's go fly a kite!
1078843
It all comes down to faith. No, you didn't see those things happen, and you can't see God, although you can see His creation. However, you can't see the wind, either, yet you know or have faith, that it's there when you feel it, right? Or if you are inside, and cannot feel it, but you see the trees waving back and forth, you know, or believe, or have faith, that it's there, because you see the effects of it, right? Or how about if you go to sit down on the couch; you don't question it, or it's ability to hold you, you just plunk your butt down on it, right? Well, that is faith. You have faith it will hold you. This is why Christians believe the Bible. we have faith. And I think it must just be in circles you hang in (which makes sense, if you're not a believer) that religion (I'm assuming you mean belief in God by that) is dying out, becuase from what I can see, young people are hungrier than ever for relationship with God.
107927
You can't see the wind, only the leaves and limbs as they respond to its ebb and flow. You can't touch the wind but it touches you with it's warm summer breezes and winter's blustery blow. But, you can hear the wind as it whips through the trees. Try to catch the wind you wind up on your knees.\n\nOff the top of my head. This was fun!!
1157163
Who said you could see it? You can make an educated guess that there is gravity due to its consumption of materials but you cant actually see gravity!
185273
The primary reason you can't see very far along the ground is because of air pressure. The lower your elevation, the more dust/air particles are condensed. When you look up, you're perceiving light that only has to travel through the air above you, while when you are looking at something else on the ground, the light has to travel through a lot more particles. Pollution obviously makes this a lot worse.\n\nAssuming you had a perfectly clear view, you still wouldn't be able to see that far because of the earth's curvature. It's easiest to do this by looking at over a large body of water. On a perfectly clear day, you will notice that you can actually perceive a slight curve near the horizon. The ancient Greeks calculated a rough approximation of the earth's size by measuring the size of a building or other object, and then going out on a ship until they could just barely see it. Then they measured its perceived height at that point, and how far they traveled out to sea. Using some simple geometry, they calculated the curvature of the earth and its size. It was relatively accurate.
1163440
because hot air rises and cold air sinks.\n\nit creates pressure changes, which make air particles move rapidly, hence we have wind.
588066
Well, we would have to know what plant you are referring to, now wouldn't we?\n\nBut generally, plants that are exclusively pollinated by insects would have a flower structure that would make it difficult for the pollen to be blown about by the wind.  These would be flowers that were deep and narrow, enclosing the anthers.  And they would generally have an area where nectar is secreted and held, so as to attract insects.  Other plants might have flowers that permitted wind pollination, but might also have flowers structured to take advantage of insect activity in a similar manner.\n\nThere are a very great many plants that are pollinated by insects, especially bees, but which can also pollinate by wind, by animals such as hummingbirds, even by water.
311578
It IS the amount of atmosphere, but primarily because of the refraction it causes.\n\nThink of it as looking through a rainbow from the side.  As light travels through dense layers of air, it bends, and the different colors in white light emerge.
661147
This is EARTH SCIENCE, not religion...:(\n\nA rainbow appears from refraction (not reflection) of sunlight through water in the atmosphere.  The circumstances for us seeing them usually happen around sunrise and sunset, since the refraction occurs in a circle around the source of light (the sun), only half of which is visible since the other half would be on the ground.  When the sun is higher in the sky, that same circular angle around the light source puts the whole thing on the same plane as the ground.  \nIt's simple refraction of light, simple physics -- doesn't have anything to do with god.
809883
It's our nature as human beings to be trapped in the perspective of our own tiny sliver of reality. Humanity as a whole has great difficulty stepping back and seeing the bigger picture.
483599
the other answers are somewhat correct but unnecessarily long....\n\n1. the rainbow is actually a circle that is partially visible as an arch due     \n    horizon limitations.\n\n2.  it is a circle because the light source ( the sun ) is a circle.
229431
What we consider the physical universe is limited by physical laws. The universe that we can comprehend beyond those laws has limits that we can not comprehend. One such limit is the speed of light if matter in the universe exceeds the speed of light relative to our observation point it will pass out of existence as far as we can detect. A black hole is another such limit to our universe, infinite time, distance etc. The Begy concept of gravity(a substatement in the atomic model) describes a big bang which has no beginning and no end, infinite energy. which we can only detect as the force of gravity. Hey theres another limit!
408414
The easy answer is, of course, from the potato salad and burrito you had earlier. A more dignified answer is at Scientific American. \n\nSimply put, wind is the motion of air molecules. Two concepts are central to understanding what causes wind: air and air pressure. Air comprises molecules of nitrogen (about 78 percent by volume), oxygen (about 21 percent by volume), water vapor (between 1 and 4 percent by volume near the surface of the earth) and other trace elements. Every time we breathe, the air we inhale is composed of about the same relative ratios of these molecules, and a cubic inch of air at ground level contains about 1020 molecules. \n\nAll of these air molecules are moving about very quickly, colliding readily with each other and any objects at ground level. Air pressure is defined as the amount of force that these molecules impart on a given area. In general, the more air molecules present, the greater the air pressure. Wind, in turn, is driven by what is called the pressure gradient force. Changes in air pressure over a specified horizontal distance cause air molecules from the region of relatively high air pressure to rush toward the area of low pressure. Such horizontal pressure differences of all scales generate the wind we experience. \n\nThe areas of high and low pressure displayed on a weather map in large part drive the (usually) gentle ambient wind flow we experience on a given day. The pressure differences behind this wind are only about 1 percent of the total atmospheric pressure, and these changes occur over the range of multiple states. The winds in severe storms, in contrast, are a result of much larger and more concentrated areas of horizontal pressure change. Tornadoes are great examples. In June 2003 Tim Samaras of Applied Research Associates placed a scientific probe in the direct path of an F4 (devastating) tornado near Manchester, S. Dak. He found that the air pressure dropped by 10 percent of the total atmospheric value over the radius of the tornado. The magnitude of this air pressure change, and the very short distance over which it occurred, explains why the winds are so destructive in this phenomenon: air molecules are very quickly accelerated into the very low pressure at the center of the tornado where the water vapor contained in the air often condenses, creating the often visible "condensation funnel."
367563
WHAT IS WIND?\n\nMovement of air between pressure systems as they try to balance out is called wind. Air flows from high pressure systems to low ones to try to reach equilibrium. In the constantly developing and changing system of the atmosphere this never actually happens.
119190
Technically yes, you would be able to see to the edge provided nothing was obscuring your view (like buildings or trees).  The problem is that dust, water vapor, and other impurities in the atmosphere would place some limitations on how far you could see.