Recent content by Simon F

The location of the carousel/turntable is not important because the rotating system is the carrousel/turntable not the Earth. This is not a Foucault pendulum experiment. The shape of the required centripetal force to get a Coriolis-only mode is known since 1835. A direct consequence of the...

There is no choice if you want to display a Coriolis-only effect. The classical carousel experiment is wrong. Students who do not understand why the classical carousel experiment is "Coriolis-centrifugal" and not advised for teaching won't understand why the physical modes in rotating systems...

I think I was wrong making a proposal on a web forum. Anyway, I hope it could illuminate some minds here about how wrong the mainstream education communicates about the Coriolis force. In 1876, Adolf Sprung showed that it was necessary to curve down the turntable to get the Coriolis-only...

Klebba and Stommel 1951 https://pubs.aip.org/aapt/ajp/article-abstract/19/4/247/1034339/A-Simple-Demonstration-of-Coriolis-Force?redirectedFrom=fulltext Edwards and Edwards 2021...

My topic was about presenting an alternative equation without Coriolis and centrifugal terms. I dot not want to spend too much time talking about the problem of associating the Coriolis force and the carousel experiment. Geophysicists know since Klebba and Stommel 1951 how to see the...

Hello, Persson 2015 : "whereas the condition that the Coriolis force is solely responsible for the deflection is justified on a rotating planet, but not on a turntable" [turntable=small carousel]. "A proper intuitive understanding of the [Coriolis-only] deflection over a rotating planet, on a...

Hello, You can read Persson 2015 in details which is the most documented article recently. Also you can read Edwards and Edwards 2021. The carousel experiment is famous for the Coriolis force topic, I am not lying. Irony is that it is a poor/fake demo of the force. The Coriolis force is a mode...

The carousel In the context of the Coriolis force, the carousel experiment is the observation of an all straight motion by one sitting on a rotating carousel. For a disputable reason, this carousel experiment has been tied to the "demonstration of Coriolis force" which explains its huge...

As was repeatedly shown by Anders Persson, https://rmets.onlinelibrary.wiley.com/doi/10.1002/qj.2477 <link removed> the "carousel experiment" is a poor case to show the Coriolis force despite claims it show the "Coriolis effect". Indeed, the Coriolis force, if it was alone (which is true for...

In 1959, rotating systems were still studied through "elastoid-inertial" oscillations. https://journals.ametsoc.org/view/journals/atsc/16/2/1520-0469_1959_016_0199_anooat_2_0_co_2.pdf This expression was clever and profoundly meaningful because it exactly describes what physics lies behind the...

I found it was important to "break the rule" for the centrifugal force topic but now I regret it, you are right. My last topic about the Coriolis force contained videos released by truly academic scientists/institutions.

Hello, I had been a young researcher and furthermore had a lot of spare time in 2024 to investigate fundamental matter which was unresolved in my mind despite years of writing equations. This investigation includes finding the most interesting texts (either peer-reviewed or not) of truly...

Hello, Phillips, N. A., 2000: An Explication of the Coriolis Effect. Bull. Amer. Meteor. Soc., 81, 299–304, https://doi.org/10.1175/1520-0477(2000)081<0299:AEOTCE>2.3.CO;2. Phillips, N. What Makes the Foucault Pendulum Move among the Stars?. Sci Educ 13, 653–661 (2004)...

The standard explanation of the Foucault pendulum is purely kinematic: the plane of oscillation stays fixed in inertial space while the planet rotates beneath it. But Norman Phillips (2000, 2001) showed that real forces — the horizontal component of Newtonian gravitation and centrifugal...

The Coriolis-only mode proves that only the Coriolis term with a minus sign can be an acceleration and the Coriolis force is defined, with the minus sign, exactly for the Newtonian analogy to work in this direction. This is why I start any explanation of the Coriolis force from the Coriolis term...