leonardo da vinci : the codex leicester

how does a river start on top of a mountain?

Not because a sponge in the mountain sucks the water upward from below.
Not because heat from the sun draws the water up the mountain. For rivers also start on mountain peaks in regions with a cold climate.
The water also cannot be drawn upward by the heat and emerge out of the mountain as a river, because in that case the water would have evaporated. And that is not possible, for the water would have to reach the opening of the mountain cavern, hence would have to rise to the roof of the cavern and then condense. But the roofs of caverns are typically dry.






  1. does the earth have a circulatory system of water?
  2. can it be proven that the interior of the earth is permeated with underground streams?
  3. how does a river start on top of a mountain?
  4. why doesn't water cover the entire earth?
  5. did water originally come from the earth's interior?
  6. why does water flow upwards if it is blocked directly at the source?
  7. why doesn't evaporated water rise?
  8. why does more water flow out of an underground stream than from a higher region?
  9. how does water behave in a container when someone knocks the container?
  10. how can one dispel the error that claims the sea level is higher than the highest mountain?
  11. how can one determine the weight of a ball in parts?
  12. does the length of a pipe influence the speed of the flow through it?
  13. how can one determine the volume of evaporated water?
  14. why does smoke change its speed when ascending?
  15. ändert sich das wassergewicht, je nachdem, wie man eine wassergefüllte rohre neigt?
  16. how does a water bubble seal itself?
  17. why is the sky blue?
  18. how does air thicken?

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