why is a tennis raacket's head frame oval shaped?
103046
I feel I can answer this question well because I've not only been a tennis player for the last 37 years, I'm also a Mechanical Engineer as well as a nationally certified  tennis instructor.\n\nThe connection of the racquet's shaft to the racquet's head affects the location of the sweet spot. And, it's always better to have the sweet spot located further from the direction of the grip because you gain greater leverage and, therefore, more power.\n\nSince the shaft has the tendency to move the sweet spot in the wrong direction (away from the head and closer to the grip), the racquet designers make the head oval, instead of circular, to overcome this tendency. Indeed, the elongation of the oval head returns the sweet spot to a position higher on the head thereby restoring power.
833914
slightly - it's not perfectly spherical.
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.
1038330
A NEW REEBOK TENNIS COSTUME DESIGNED AS PER WIMBLEDON NORMS.
358036
The most efficient shape for an egg would be a sphere. This would need the least amount of shell to enclose a given volume, and as shell is an "expensive" thing for birds to make (in terms of energy/ food resources/ minerals). That's a good thing in evolutionary terms.\n\nThe "egg" shape is a modification of the sphere that can stop the egg from rolling away and breaking! This is most obvious in birds that nest on sea cliffs (such as gannets). Push a gannet's egg and it rolls around in a circle. That may be a reason the asymmetric shape evolved originally. This effect is less pronounced in birds that have evolved to make cup-shaped nests, as it's no longer necessary, so in some cases their eggs have lost this ability to roll in a circle even though they're still oval.
112010
topspin actually makes the ball come down fater so you may be swinging your tennis racket through with the face of racket too open.\n\nif the racket's face is pointed upwards or is flat then when you swing from low to high the ball will go long every time. You have to get the racket's face closed and swing from low to high in order to generate topspin. It is tough at first but once yo get it tennis is that mouch more fun.
722697
The shape is completely random, based on how air currents (wind and updrafts) are moving around and inside the cloud. You get so many cloud shapes over time that a few random patterns are bound to resemble something else we're familiar with, such as a heart or a dog.
441669
It is called the footspot.  It is the center of the footstring, the imaginary line accross the table at the second diamond from the rack end of the table.  The footspot is where the first ball in the rack is placed.\n\nJust fyi, at the other end of the table that line is called the headstring.  This is accross the breaking end of the table from second diamond.  The area inside that line is commonly called "the kitchen".
148308
Why would anyone buy Oval wheels? The are supposed to be ROUND for a reason!
823662
it shows the direction that the wind is coming from. \nthis is because it normally has a huge tail and a small head. the wind blows the huge tail, and the head points towards where the wind is coming from.
679460
because the shell is formed by the animals ribs which have expanded outward and fused together. i didn't believe it at first when my diversity teacher told me but i recalled a turtle shell i had as a child and when you looked inside the vertebral column was fused to the top of the shell which makes sense when you consider the rib expansion factor.
175675
what the hell does this have to do with tennis?
1061912
its supposed to look like a sideways heart.. the more 3's are more hearts..
890639
Skulls are not perfectly round.  http://www.infovisual.info/03/013_en.html
639806
Prince O3 Silver Oversize tennis racquet packs plenty of power, dampened and comfortable feel at impact and with generous sweetspot is forgiving from all areas of the court. \nThe open string pattern makes it spin friendly and at net this racquet offers a nice blend of power, stability and forgiveness. \nIt is suited for players who wants power.... I prefer this racquet
423452
Yes her face is oval, but so is Jennifer Lopex, Cyntiha Nixon, Julia Roberts, Cate Blanchett and Natalie Portman to name a few. Faces who are oval are usually syncled, that is if you would split it into two halfs, verticly or horitzonally, you would find out that it is almost a perfect match either way. The coincide very well. But are not neccerely 'perferct'. I for example find Jennifer Aniston very beautiful woman and her face has the triangle shape.
693221
It's a face that is not flat.  A cone has two faces: the base which is flat and the rest of the cone which is curved.