23 APR 2012 by ideonexus

 Fossils and the Age of the Earth

In the mountains of Parma and Piacenza, multitudes of shells and corals filled with worm-holes may be seen still adhering to the rocks, and when I was making the great horse at Milan a large sack of those which had been found in these parts was brought to my workshop by some peasants... The red stone of the mountains of Verona is found with shells all intermingled, which have become part of this stone... And if you should say that these shells have been and still constantly are being created ...
Folksonomies: geology fossils
Folksonomies: geology fossils
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Leonardo da Vinci sees evidence that mountains were once under the sea.

09 SEP 2011 by ideonexus

 An Experiment in Evaporation and Condensation finds Eleme...

Salt water when it turns into vapour becomes sweet, and the vapour does not form salt water when it condenses again. This I know by experiment. The same thing is true in every case of the kind: wine and all fluids that evaporate and condense back into a liquid state become water. They all are water modified by a certain admixture, the nature of which determines their flavour.
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From Aristotle's "Meteorology". An example of knowing something from experiment.

21 MAY 2011 by ideonexus

 The First Moments After Birth

After the baby is born, most doctors, including myself, hold it in our lap momentarily, to allow baby blood in the placenta to pass by gravity through the umbilical cord back into the baby, and to wipe the baby as clean as possible with gauze squares. We feel this is a substitute for the animal mother's licking her baby. This probably has nothing to do with cleanliness but serves as a dermal reflex. It is amazing how many babies void or empty their bladders upon this stimulation. It has been ...
Folksonomies: pregnancy childbirth
Folksonomies: pregnancy childbirth
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What happens medically and biologically in the first moments after a baby is born.