jimharvard
Military
- Feb 2, 2011
- 5
I have observed a particular type of freshwater fish that appears to possess the ability to "instantly" stop its forward movement in water.
When this fish employs this behavior, there is no "slow" stop or "gliding" stop but an instant stop as though the fish had physicaly run into an invisible barrior. In a rough calculation of the mass and corresponding forward momentum of this fish, it appears that the expected inertia is greater than the surface area of the fish's fins available for applacation of opposite breaking force.
The best example that comes to my mind with this fish is something like opposing magnetic forces where the fish is able to instantly "stick" in place in the water.
Does anyone have a fluid dynamic theory or molecular chemical explanation for how this fish is able to seemingly overcome Newtonian mechanics?
thanks.. i'm new to this forum
jim coster, esquire, pittsburgh, pa
When this fish employs this behavior, there is no "slow" stop or "gliding" stop but an instant stop as though the fish had physicaly run into an invisible barrior. In a rough calculation of the mass and corresponding forward momentum of this fish, it appears that the expected inertia is greater than the surface area of the fish's fins available for applacation of opposite breaking force.
The best example that comes to my mind with this fish is something like opposing magnetic forces where the fish is able to instantly "stick" in place in the water.
Does anyone have a fluid dynamic theory or molecular chemical explanation for how this fish is able to seemingly overcome Newtonian mechanics?
thanks.. i'm new to this forum
jim coster, esquire, pittsburgh, pa