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# Why does a golfball have dimples on its surface?

###### Wiki User

###### 2007-10-21 17:23:57

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## Related Questions

###### Asked in Golf, Tiger Woods, Golf Equipment

### How do they put dimples on a golf ball?

Dimples are placed on a golfball by a large machine called a
Ball Stamper, made by American Industrial Equipment Corporation,
which was first founded on February 22nd of 1842 by James Marshall
Windham III. The first one could only place 2 of the 336 dimples on
a ball in one second. It took almost 2 minutes to place all 336
dimples on one ball! The latest models can put all 336 dimples on
the ball instantly, on up to 6000 balls at a time. That's over 2
million dimples at once!

###### Asked in Biology, Genetics

### What is the phenotype of an individual with one allele for dimples and on allele for no dimples?

This would depend on whether the allele for dimples is dominant
or recessive.
If the allele for dimples is dominant and the no dimples allele
is recessive then the phenotype of the individual would be dimpled.
If the allele for no dimples is dominant and the allele for no
dimples is recessive then the dimples will not be expressed. If
these alleles are codominant then the dimples will be expressed but
not as much as in an individual who has both alleles for
dimples.

###### Asked in Golf

### A golf ball has a diameter of 4.1cm and the surface has 150 dimples of radius 2mm Calculate the total surface area?

You didn't finish the question but I assume that you mean the
surface area minus the area of the dimples.
The surface area of a sphere is 4π*r^2 and since the diameter is
4.1 cm, the radius is half of that or 2.05 cm.
Hence the surface area of a sphere of radius 2.05 = 4*π*(2.05)^2
=52.8101725 cm^2
----------
Now for the dimples. They are circles taken out of the surface
of the sphere and hence each has an area of π*r^2 and there are 150
of these.
One cm is 10 mm (cm is hundredth, mm is thousandth)
So the radius of the dimples is 0.2cm
150 * π * (0.2)^2 = 150 * π * (0.04) = 6πcm^2 = 18.8495556
cm^2
----------
Now we subtract the area of the dimples from the area of the
sphere:
52.8101725 cm^2
18.8495556 cm^2
------------------------------- Subtract
33.9606165 cm^2
ANSWER: 33.9606165 cm^2 is the surface area of the golf ball
minus the area of the dimples.

###### Asked in Golf, Biology

### If you have dimples will your child have dimples?

Not necessarily, dimples are a dominant gene and if neither you
nor your spouse passed it on, the baby will not have dimples. The
chance of your child not having dimples is probably 1/4. However,
if BOTH your parents have dimples, it is possible there will be a
100% chance of the baby having dimples. It's complicated. Basically
there is a three fourths chance of dimples.