why are nuclear cooling towers shaped the way they are shaped?
347092
Many (square?) cooling towers are open on all sides through wooden or fiberglas slates that allow air to enter and mix with the sprayed water to be cooled.  The water droplets partially evaporate giving up much of their heat then fall to the cooling tower basin below the tower where the "cooled" water is pumped back into the plant to extract more waste heat.  The water is recycled perhaps to extract heat from giant condensers to create very low pressures (partial vacuums) at the turbine discharge permitting the turbine-generate to generate far more electricity than if the turbine discharged directly to the atmosphere.\n\nHyperbolic (hour-glass shaped?) cooling towers perform the same function and likely are more expensive to build than cylendrical (or square) cooling towers but the advantage is that all air enters at the bottom of the cooling tower (not through the sides) and passes up through the entire tower height producing a "chimney" effect that strengthens the draft promoting better heat rejection.  The reduced diameter would increase air velocity (like a ventouri tube) to counter the downward pressure of the water drops.
605515
It is not exactly round, just looks that way.\n\nSee webpage below for the correct shape.
731498
The orbitals themselves have no real "shape".  The graphical representations you are looking at are actually density maps of where an electron in that orbital is most likely to be found.\n\nIf you take a look at an "f" orbital, for example, you'll see that the "shape" is not contiguous.  It looks like a hourglass going through a donut.  Electrons being the happy things they are can appear the various different permitted energy levels around a nucleus and can even "tunnel" outside the atom itself.  Just remember when you're looking at those pictures that you're not really looking at shapes but density graphs of where an electron in that type of orbital can most probably be found.
820312
Because air preasure is distributed evenly and in all directions. Notice that if you blow on a bubble it changes shape temporarily, but only as long as the preasure on it is from one side. After you stop blowing it returns to perfectly round.
346117
Because they look cooler that way.
215864
Protons and neutrons certainly do have a shape, in the same way that an electron in orbit around a nucleus has a shape (it's a probability cloud).\n\nI'm not aware of any measurements of proton/neutron shapes.  There are experiments that measure the shape of nuclei (groups of protons and neutrons).  Nuclei are generally spherical, but they are known to have squashed shapes due to angular momentum (some are extremely non-spherical).  Protons/neutrons are probably very close to spherical as well, but proabably slightly squashed too because they do have angular momentum (spin).
1143659
If you are talking about the shape that you always see in cartoons, round at the bottom and coming to a point at the top, then it doesn't.\n\nThe raindrop shape is an invention of artists or whoever.  High speed photography shows that raindrops take the shape of flattened spheres due to air resistance.\n\nYou can read about it here: http://www.islandnet.com/~see/weather/history/lenard.htm
1122346
Cf: atomic bombs and nuclear power plants. They use the conversion of a tiny amount of mass to lots and lots of energy.
1070746
It has something to do with a mysterious underlying mathematical principle. Generally, functions are curved. Laws of nature obey simple mathematical formulas. When averaged together, round shapes are formed.
728166
This is because of their unique dome shape which draws the center of mass to its center axis and prevents it from breaking. Hence, a much larger force is required to break it then u expect. This dome shape is so powerful that if properly designed it can become unbreakable no matter how much load u put on them. This thing can see some old forts that have a dome on their ceiling which adds to their strength. Even now the modern structures which are being built today have dome shape as it provides strength to them and also contributes in prevention from earthquake.
15792
It is that shape because it comes down a long shape tunnel and with pressure. So it is compress together.
349292
They are round because that shape can withstand the most amount of pressure without exploding/collapsing. The shape is also called a pressure vessel.
280905
During some nuclear tests, they wanted to see how air moved near the explosion.  Just before the detonation, they launched rockets that produced a lot of smoke in their exhaust.  These smoke trails served as reference lines so they could see how the air moved.  I always wondered about this, too, until I recently saw this explanation.  I'm sorry I don't remember the source.\n\nWhat is really weird is some of the Howard Edgerton images of the first few instants of A-bomb explosions where the electric current induced in the tower guy wires is vaporizing the wires!  See the 7th photo.
983012
Your book,the reading table,the trees,themountins,a monument,a fridge or an airconditioner ll contain right angle.Actually there is a branch of mathematics known as Trigonmetry which helps us to find the exact mesurements of high structures without actually measuring it with the help of the right angle they form with the ground
616835
The shape of a roof approximates the shape of an airplane wing. Air flowing rapidly over the roof generates lift, lifting the roof off the building.
1137273
No it was built to take hurricane wind and earthquakes. \n\nDuring an interview in August 2001 the designer did comment that if a half fueled 707 were to fly into the tower it would stand.
997610
They are shaped by the wind and heat.\nSee in\nhttp://allaboutweather.tripod.com/cloudclassification.htm