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Today's Creation Moment

Apr
01
God Shows Us the Earth from Space
Job 26:7
“He stretcheth out the north over the empty place, and hangeth the earth upon nothing.”
The Earth floats in space, attached to nothing, surrounded by a thin layer of air. What science has only just learned, the Bible has taught for thousands of years! Yes, while other ancients pictured...
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The Best Swimming Wing

Genesis 1:21a
"And God created great whales, and every living creature that moveth, which the waters brought forth abundantly, after their kind..."

An unusual example of a design in nature that runs counter to human common sense is found in the pectoral flippers of the humpback whale. The leading edge of these flippers, which one would intuitively expect to be smooth, actually sport evenly spaced bumps.

After all, airplanes, as well as birds, have sleek leading edges on their wings. These smooth edges would seem to be the most efficient at cutting through the air, which is a fluid, just like water. Puzzled about this, scientists recently made two models of the humpback's pectoral fins. One had a smooth edge, the other had the bumps that appear on real fins. These models were taken for testing in a wind tunnel. Not surprisingly, the smooth-edged fins performed like a standard wing. However, the humpback model did much better! It generated 8 percent more lift and a third less drag than the standard design. What's more, the bumpy wing could angle 40 percent more steeply into the air than the sleek model before it stalled. Since water, like air, is a fluid, these principles would apply to a real humpback fin, enabling humpbacks to be more nimble in the water.

This unusual design comes in handy for the humpback because they feed on fast-moving schools of nimble herring and sardines. Obviously, God gave them a special design to help them do this.

Prayer: 
Father, I thank You that Your thoughts are not our thoughts. Help me to think more like You. Amen.
Notes: 
Scientific American, 8-2004, pp. 18-19, "Bumpy Flying."