Slower water at the banks; why the air is blue; fading motion
Three red-chalk notes on currents, the colour of the sky, and the weakening of violent motion
This red-chalk page gathers three brief observations with no accompanying drawings. Water flowing near the bed and the banks runs slower than the rest because collisions there throw it into eddies. The air appears blue because of the darkness that lies beyond it, for black and white together make blue. Finally, all violent motions grow weaker the farther they travel from their cause.
On this page
Why water is slower near bed and banks
The water that runs near the bed and the banks will be slower than the rest, because of the collisions there that produce eddies.
Why the air is blue
The air is blue because of the darkness that lies beyond it, for black seen through white yields blue.
Violent motion weakens with distance
All violent motions grow weaker the more they depart from their cause.