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Dear Visitors,                                                                                                                                    April 21, 2017

Thank you for stopping at FlatEarthLunacy.com

As a scientist with college degree in Astronomy, minor in Physics and Mathematics, I was appalled to find folks telling outright falsities and presenting bad science to bolster suspicion of our known accepted reality - that the Earth is a beautiful blue globe.

This blog clearly shows scientific proofs that debunk everything that flat Earth proponents claim.  Here we also expose the comments those YouTube video channels delete, because they don't want you to see them.

The Earth is not flat.  That claim is a conspiracy theory perpetrated by ignorant people who have ulterior personal motives and agendas.

The Earth is a beautiful blue spheroid globe spinning on an axis 23.5° once each day, and orbiting the Sun every 365.25 days.

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kind regards,  Jonah The Scientist


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Rob Durham - Flat Earth and Foucaults Pendulum


Dear Rob Durham,

Up until time mark 4:56 your video is basically correct on how a Foucault pendulum behaves, and why.

But after that time mark you go sideways and start to make up your own mathematics and laws of nature, which have no scientific validation.

Fact:
In order for a pendulum experiment TO BE ACCURATE, precautions must be made to assure that the pendulum is NOT ACTED UPON BY ANY OTHER OUTSIDE FORCES OTHER THAN GRAVITY.

Therefore, yours is not a practical logic experiment...

1. Traveling with a swinging pendulum (the bus) at 500mph suspended from an airplane - could never physically be done. Bad choice.

2. The wind resistance of the bus alone would bring the airplane down.

3. And practically, how would you negate or counteract the wind resistance against the bus so that you could really measure the motion of the Foucault pendulum along the way?

But yes, it's just a (dumb) thought experiment.

After 1-hour, if your flight plan took into account the Coriolis force, you would still be traveling due north.

The Earth does rotate approximately 15 degrees in one hour. So what? That factor should be nowhere in your calculations, because the Earth's atmosphere, airplane, bus etc., all move along together at that same speed anyway.

Fact check = You FAIL
Your (Sin 50) * 15 degrees = 11.5 degrees has no barring on this experiment and does not need to be factored in.

The (Sin 50) factor already takes into account the difference in rotational speed due to latitude.

No additional correction for Earth rotation should be made.

We need to write the Earth's rotation vector Ω̂ Ω^ in the polar coordinates we use:

Ω̂ =Ωsinλẑ +Ωcosλcosθr̂ −Ωcosλsinθθ̂

The slow precession approximation is

θ˙=Ωsinλ

So then, the direction of the plane of oscillation of a pendulum with respect to the Earth rotates with an angular speed PROPORTIONAL to the sine of its latitude; thus one at 45° rotates once every 1.4 days and one at 30° every 2 days.

Fact check = You FAIL
The Foucault pendulum "does not dictate" any travel direction east or west. Only north our south.

Your thought experiment is a bust.

If you want to test a pendulum "while it is moving," the resultant change in angle would now need to be expressed using the math of calculus (not sine of latitude alone).

Fact check = You FAIL
Your demo at time mark 9:00 contains many errors.
My advice is that you take a physics and calculus course, so that in the future you don't expose your ignorance to the world again.

Fact:
The motion of the Foucault pendulum is much more complex than you think and appear to comprehend...

The pendulum swings in a fixed plane and the Earth rotates beneath it, but this explanation is misleading. At the north or south pole, the pendulum is moving in a fixed plane (if we disregard the fact that the Earth is also revolving through space), so the plane of the pendulum seems to rotate through 360° as the Earth makes one full rotation.

At any other point on Earth, however, the point at which the pendulum is attached cannot be considered a "fixed point," because that point also moves as the Earth rotates. The plane in which the pendulum swings is similarly in motion.

Because of this, the amount of time that it takes for the pendulum to make one full rotation (with respect to its surroundings) is equal to one sidereal day (23.93 hours) divided by the sine of the latitude of its location. Since sin(0)=0, the plane of a pendulum located at the equator will not appear to move at all.

Hey idiot Rob, let's see your math for this...

How does the pendulum demonstrate the rotation of the earth, while taking these effects into account?

1. Inertia (Makes the pendulum swing straight out.)

2. Gravity (Pulls the pendulum straight back.)

3. Air Resistance (Makes the pendulum swing in shorter arcs, but still straight arcs.)



Discussion at - https://www.youtube.com/channel/UC7ipUKERU0tzYFxALJBli4A/discussion
Video at..
https://www.youtube.com/watch?v=aAN8yenz3nA

kind regards, JonahTheScientist


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