Rodents Are Smarter Than The Average 5th Grader - Bernoulli Principle

[Jim H - VA USA]

In the experiment below, you blow to pick up the ping pong ball. Neat.

 

[scruffy]

How do you know the rodent is "smart", and not just operating from reflex?

 

[Jim H - VA USA]

How do you know the rodent is "smart", and not just operating from reflex?

I think you mean "instinct," but it was simply intended to be a fun thread title (a takeoff of the game show "Are you smarter than a 5th Grader.")

I suppose we we could test it, and ask a bunch of 5th graders to build an underground burrow on flat ground which is ventilated by natural circulation.

 

[hjmick]

Of course they are, they didn't shut down their schools for a pandemic...

 

[scruffy]

I suppose we we could test it, and ask a bunch of 5th graders to build an underground burrow on flat ground which is ventilated by natural circulation.

Birds have magnets in their brains, they know where north is without using a compass.

Sharks and skates have electroreceptors, they can tell if you put an insulator or a conductor in the water

 

[ReinyDays]

Er ... the P'dogs are using Venturi's principle ... Bernoulli's Principle only effects a single flow ... P1v1 = P2v2

​

 

[Flash]

Most people thing that it is the airplane engine noise that makes an airplane fly. However, the real thing that keeps an airplane flying is only a theory by an Italian.

 

[ReinyDays]

Er ... Navier was French ... Stokes was English/Irish ... it's Navier/Stokes that keeps airplanes aloft ... although fifth-graders aren't usually familiar with system sets of partial differential equations ...

 

[Jim H - VA USA]

Er ... the P'dogs are using Venturi's principle ... Bernoulli's Principle only effects a single flow ... P1v1 = P2v2

​

Fine.

Bernoulli's work explains the reasons for the Venturi effect which results. Bernoulli published his work before Venturi was born.

Arguably, Boyle (P1V1=P2V2) took a huge step in the right direction. Bernoulli added flow, and Venturi added a second flow.

Regards,
Jim

 

[scruffy]

Er ... Navier was French ... Stokes was English/Irish ... it's Navier/Stokes that keeps airplanes aloft ... although fifth-graders aren't usually familiar with system sets of partial differential equations ...

Navier-Stokes is what makes them crash.

For instance - here is a nice gentle Navier-Stokes pattern, and you can see that depending where the airplane is, it encounters directional forces.

Here are more interesting and more dangerous solutions, "pockets of turbulence".

Navier-Stokes is a special case of a more general model of coupled oscillators called Kuramoto-Sivashinsky. The main difference is weak phase coupling, which doesn't really happen in fluid dynamics.

Kuramoto-Sivashinsky equation - Encyclopedia of Mathematics

encyclopediaofmath.org

 

[scruffy]

Fine.

Bernoulli's work explains the reasons for the Venturi effect which results. Bernoulli published his work before Venturi was born.

Arguably, Boyle (P1V1=P2V2) took a huge step in the right direction. Bernoulli added flow, and Venturi added a second flow.

Regards,
Jim

By the way, the vortices and so on ("dynamic attractors") are enormously important in information processing, where the medium is bits rather than water or air (but, same math).

This is called a Hopf fibration, in this case a directional vortex. You can get this in a fluid for example, with a few jets pointed in the right direction.

This has applications in physics, in Sir Roger Penrose's twistor theory, and in the brain, where similar type matrices are in play, and there in both cases no external jets are required.

 

[ReinyDays]

Navier-Stokes is what makes them crash.

For instance - here is a nice gentle Navier-Stokes pattern, and you can see that depending where the airplane is, it encounters directional forces.

View attachment 759943

Here are more interesting and more dangerous solutions, "pockets of turbulence".

View attachment 759944


Navier-Stokes is a special case of a more general model of coupled oscillators called Kuramoto-Sivashinsky. The main difference is weak phase coupling, which doesn't really happen in fluid dynamics.

Kuramoto-Sivashinsky equation - Encyclopedia of Mathematics

encyclopediaofmath.org

Could you label your charts ... they make no sense otherwise ...

NS is how we get our gravity vector pointed "up" ... non-intuitive but true ... it's the nature of fluids at environmental temperatures ... your link only related to the one-dimensional problem, for which the analogy is hydrostatic pressure ... the degenerate form of NS ...

Still works ... the air foil cause high pressure below, low pressure above ... the pressure force then gives lift ... ask a pilot why that's important ... where are the pressure and flux factors in KS? ...

 

[james bond]

I think it's Bernouli Principle I use it in my tennis game with heavy topspin. It usually surprises a stranger if they aren't used to it.

 

[ReinyDays]

I think it's Bernouli Principle I use it in my tennis game with heavy topspin. It usually surprises a stranger if they aren't used to it.

Very close...

Magnus effect - Wikipedia

en.wikipedia.org

...and thank you for this wonderful opportunity ...

GO GIANTS ...

 

[james bond]

Very close...

Magnus effect - Wikipedia

en.wikipedia.org

...and thank you for this wonderful opportunity ...

GO GIANTS ...

Lol, Magnus Effect is part of Bernoulli.

 

[ReinyDays]

Lol, Magnus Effect is part of Bernoulli.

Can't you read? ... the article says this is caused by the pressure force ... you're mixing your fluid flows again ...

 

[BasicHumanUnit]

Read the thread...pretty obvious the animals are smarter.

BTW..animals didn't build enough nuclear weapons to play tit for tat annihilation of it's own species.

Indeed, humans are far inferior to all other living creatures.

/Discuss further to certify this

 

[ReinyDays]

Read the thread...pretty obvious the animals are smarter.

BTW..animals didn't build enough nuclear weapons to play tit for tat annihilation of it's own species.

Indeed, humans are far inferior to all other living creatures.

/Discuss further to certify this

They've had a longer time to test ...

Plants are the smartest, they take solar energy and make their own food ... and have been for damn near 3 billion years ... humans got nothing on them ...

 

[james bond]

They've had a longer time to test ...

Plants are the smartest, they take solar energy and make their own food ... and have been for damn near 3 billion years ... humans got nothing on them ...

Lol. Humans are the smartest as they have free will.