Golf Ball Dimples Increase Distance Travelled 90+ Y/O Ad Trade Card

Description

Golf Ball Dimples Increase Distance Travelled 90+ Y/O Ad Trade Card
NOTE:
THESE ARE NOT POSTCARDS
THEY ARE TRADE/ADVERTISING CARDS.
THEY ARE MUCH SMALLER THAN A STANDARD POSTCARD
AND
THERE IS ADVERTISING TEXT ON THE BACK!
THE CARD DIMENSIONS ARE APPROXIMATELY
2 5/8 '' x 1 3/8 ''  or  6.5 cm. x 3.5 cm.
ORIGINAL 90+  YEAR OLD TRADE  ADVERTISING CARD
A GOLF BALL
The reason why golf balls have dimples is a story of natural selection. Originally, golf balls were smooth;
but golfers noticed that older balls that were beat up with nicks, bumps and slices in the cover seemed
to fly farther. Golfers, being golfers, naturally gravitate toward anything that gives them an advantage on
the golf course, so old, beat-up balls became standard issue.
At some point, an aerodynamicist must have looked at this problem and realized that the nicks and cuts
were acting as "turbulators" -- they induce turbulence in the layer of air next to the ball (the "boundary
layer"). In some situations, a turbulent boundary layer reduces drag.
NOTE:
THE REVERSE SIDE HAS TEXT ABOUT THE IMAGE ON THE FRONT SIDE
THE CARD DIMENSIONS ARE APPROXIMATELY
2 5/8 '' x 1 3/8 ''  or  6.5 cm. x 3.5 cm.
NOTE:
THE IMAGE ABOVE IS LARGER THAN THE CARD
TO SHOW THE DETAIL.
SEE SCALED IMAGE ABOVE.
THIS CARDS IS NOT A MODERN REPRODUCTION
THIS CARD IS 90+ YEARS OLD
IT IS NOT PERFECT AND THIS CARD MAY HAVE
SLIGHT PAPER LOSS
SMUDGING
ROUNDED CORNERS
SURFACE CREASE
SEE THE IMAGES ABOVE!
22
WE COMBINE SHIPPING
BUY 1 TO 4 TRADE ADVERTISING CARDS AND THE TOTAL TO SHIP IS
BUY 5 TRADE ADVERTISING CARDS AND SHIPPING IS FREE
NOTE:
ON LARGER INTERNATIONAL ORDERS WE MAY REQUIRE REGISTERD
MAIL AND WILL SPLIT THE COST WITH THE BUYER.
INQUIRE IF CONCERNED!