Proof that our Planet isn’t flat
u/BigGuyWhoKills — 18 days ago
u/BigGuyWhoKills
r/flatearth r/silversunpickups r/radiocontrol r/DebateFlatEarth r/NameThatSong r/learnpython r/aliens r/interesting
Do you have difficulty "playing" SSPU songs in your head?
There are many SSPU songs that do not get stuck in my head, even if I want them to. This has bothered me since Physical Thrills because I use songs that I like to push out catchy songs that I don't like.
Yesterday an idea hit me that might explain why they don't get stuck in my head: they are too complex. Physical Thrills seems more advanced than prior work. And Tenterhooks even more so.
For example, my simple brain cannot play back "System Error" on demand. The "Waking up is lonely and so easy to do" line in the chorus is a cadence that is beyond me. I think it has something to do with the layering of instruments.
It doesn't help that there is more than one version of the chorus. And the song has other parts where I literally can't tell what Brian is singing.
But do any of you have a similar "block"? Is this Butch Vig's doing?
u/BigGuyWhoKills — 1 month ago
▲ 0 r/radiocontrol
RC helicopter ground resonance help
I want to make a test bench for my Hobby King HK450. It would be clamped to the test bench and powered by a 12 volt 30 amp power supply.
I know what ground resonance is, but have only experienced it a few times. Each time was very minor. I also know the solution for it is to lift off (or shut down if the rotors don't have much energy in them at the time).
With a test bench, lifting off would be impossible, so the plan is to never run more than about 30% throttle. I would also use only collective. This would be controlled with an ESP32, so keeping the servos in sync would be simple (once their travel limits have been properly set).
I will also use a 3-axis accelerometer to detect excessive vibration. When detected, it will cut power and set collective to negative 5° (alternative suggestions are welcome). I don't have dampeners figured out, but intend to have them between the wall-mounted workbench and this test bench.
Is this test bench a bad idea? Will it tear itself apart in just a few minutes? Or are my precautions adequate to make it worth the risk?
u/BigGuyWhoKills — 2 months ago
[nearby stars debunk] If all stars are 3,100 miles above a FE, people in different locations would see different angular distances between star pairs
But since everyone, EVERYWHERE ON EARTH, sees the exact same spacing, we know that stars are many thousands of times farther away than the diameter of the Earth (the maximum distance between two observers).
The exception is parallax, and that is less than one arcsecond of change. Parallax causes slight angular variations as the Earth orbits around the sun. Parallax is difficult to personally observe, but it can be done with high-end commercial equipment and patience.
u/BigGuyWhoKills — 3 months ago
▲ 10 r/DebateFlatEarth
Nothing spins in miles per hour
This post is to clear up a common misconception amongst flatties:
Rotation is measure in angular units such as rotations per minute (RPM), degrees per second (°/s), or radians per second (rad/s).
They are not measure using linear rates like miles per hour (MPH) or kilometers per hour (KPH).
If you want to compare the rotation of two things, especially when they are at different scales, you should use angular rates and not linear rates.
I've recently seen a few comments in other posts about "water sticking to a spinning ball" and thought that I'd post something about it.
We've probably all heard the Earth spins at 1,000 MPH. That is a very ignorant way of describing the rotational rate of the Earth for a few reasons:
- It is only valid at specific latitudes (as you approach the poles the linear speed approaches zero)
- It ignores the scale of the Earth (complicating its translation to any example or experiment)
- It is not used professionally (have you ever purchased a drill that listed it's rotational speed in MPH?)
To flatties: this is important when trying to debunk the globe model. You must use the same rotational rate to properly compare your experiment with the globe. Misrepresenting the globe model is a form of the strawman fallacy. Technically, you must also have no other significant gravitational sources nearby. But that's not the purpose of this post.
u/BigGuyWhoKills — 3 months ago
Show your evidence - water is flat
We often hear from flat earthers that "water is flat". Some even say things like "Physics proves water is flat". But I've never been able to get any evidence from a flat earther to back up this claim.
So here's your chance! Post your evidence for flat water. But remember, "absence of evidence is not evidence of absence". In other words, the inability of you to show curvature doesn't mean it isn't there.
u/BigGuyWhoKills — 3 months ago
▲ 0 r/learnpython
An interesting blog about disabling AI features when learning Python
Mark Smith from JetBrains (the makers of PyCharm IDE) posted a video about how to learn Python the right way. One unique thing he said was to disable (some) AI features while learning. At 19m25s he goes into details about how to learn Python (and programming in general) using AI (LLMs).
One of his points is to not let the LLM design your code. I only kind of agree with this. If you notice your program is a monolith, and you are still new to software architecture, I think you should ask AI how to split it up into a design that will be easy to maintain. Or even better: ask AI to teach you different software architecture paradigms.
I wouldn't say this is ideal for everyone, but crutching on AI could definitely hinder actual learning. Just a few years ago the industry used to tease programmers who "couldn't write anything if StackOverflow was down". Now we seem to hold vibe programmers in the same disregard.
Mark's video is about a half hour and I thought it was worth watching. I just listened to it in the background.
u/BigGuyWhoKills — 3 months ago
Most flat earthers believe the sun to be about 3,100 miles above the Earth. If that were so, some observations would be apparent. Here is one to consider...
On a flat Earth:
- For someone at the equator with the sun overhead, it would be only 3,100 miles away from them.
- For a 2nd person who is also at the equator, but far enough away for the sun to be setting, the first person would be about 6,000 miles away and the sun would now be 6,753 miles away calculator.
- But 6 hours earlier, the sun was only 3,100 miles away from person 2. That means it is now more than twice as far away (a change of 121%).
- Perspective requires that when something moves twice as far away, its apparent (angular) height decreases by half and its apparent (angular) width decreases by half.
But this apparent size change has never been observed. Nowhere in the world. This implies that either perspective is wrong, or the sun is significantly farther away.
On a globe Earth:
- For someone at the equator with the sun overhead, it would be only 93,000,000 miles away from them.
- For a 2nd person who is also at the equator, but 1/4 of the way around the globe (where the sun is setting), the sun would be 93,012,000 miles away from them (a change of 0.0129%).
That small of a size change would be almost impossible to detect.
u/BigGuyWhoKills — 4 months ago
Perspective causes everything to appear smaller, the farther away they are. That means tall things appear shorter, and wide things appear narrower.
So when we see the sun or moon set, we know that isn't happening because of perspective. If it were perspective, they would get smaller and smaller. They wouldn't be their normal width as they reached the horizon.
u/BigGuyWhoKills — 4 months ago
I live in a valley.
The West mountains are significantly shorter than the East mountains.
On clear days at sunset, the shadow of the West mountains climbs up the East mountains.
That shadow eventually reaches a point on the East mountains that is the same height as the West mountains.
Then the shadow continues to climb higher on the East mountains, to points higher than any of the West mountains.
That means the sunlight is shining upward.
That would be impossible on a flat Earth.
u/BigGuyWhoKills — 4 months ago
I once debated a person who said:
> Gas always expands due to entropy to fill an available volume until equalization occurs. (Thanks to the 2nd law of thermodynamics)
That isn't exactly wrong, just incomplete. Okay, it's wrong in at least three ways. They were trying to say "gas expands to fill a volume until pressure equalizes". But even that is incomplete. A more complete wording of that would be:
> Gas expands to fill the available volume until its internal pressure is balanced by all acting forces.
One of the flaws in first version was that it implies gasses will always distribute to equal pressure. But that is not always the case. So why do we teach a simplified principle? Because high school students only need to learn the basics. And there's nothing wrong with stopping your fluid dynamics education at that point.
If there are external forces acting on the gas, the pressure may never equalize. External forces are what makes a gas centrifuge work.
The same principle is why we have lower atmospheric pressure at higher altitudes. A barometric altimeter relies on the pressure difference between the ground and their current altitude to know how high above the ground they are.
You don't even need to be in an airplane. Here is Wolfie6020 showing the pressure change as he takes an elevator down from the 26th floor of a hotel. I have a dozen Bosch BMP280 (and similar) sensors in my house, and they can reliably show a pressure change between the floor and the ceiling. If 'equalization' were an absolute law, my sensors on the floor and the ceiling would read the exact same pressure. They don't. They show a constant pressure difference because gravity is an 'acting force' that prevents equalization.
And finally, would Mt. Everest hikers take supplemental oxygen cannisters if they didn't need them? They need them because the air pressure is lower at the top of the mountain. And if the air pressure is lower, then gas is not expanding in the way the first quote above tried to imply.
u/BigGuyWhoKills — 4 months ago
If the sun sets because of distance and perspective, then the pattern of daylight on the AE map would always be a circle of light. But on the equinox, the daylight pattern is a straight line.
u/BigGuyWhoKills — 4 months ago