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Messages - Plat Terra

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31
Flat Earth General / Re: Flat Earth Society Memes
« on: November 04, 2019, 05:34:39 PM »

32
No one searching for truth is buying the Globie Earth BS here.  O0 It's easy to see you cannot prove Earth is a sphere. You're just a bunch of professional deniers and want revenge because we have obliterated your beloved fantasy.  C:-)

https://www.theflatearthsociety.org/forum/index.php?topic=60834.msg2213261#msg2213261

Even young people are seeing the lies. Your profession will dwindle away soon.

Gaming YT Channel "Asmongold" (325K Subscribers) Did A Real Time Flat Earth Poll...Result? Priceless



Have a nice day, Globies.  ;)

PS, a great number of Globies have accepted defeat and are continuing to do so at record numbers. Plat Terra



33
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



How can elevations (vertical distances) from sea level show if the sea level itself is curved or not?

Are you still refusing to learn what is DATUM?
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?

It is confirmed by Datum definitions, including:
NAD 27 CONUS - North American Datum of 1927 for the Continental United States (Common on older USGS maps)
NAD 83 – North American Datum of 1983 (Used on most newer USGS maps)
WGS 84 – World Geodetic System of 1984 (The default datum used by the GPS system)

I believe the elevations in the map you posted were measured relative to NAD 83.

Now:

From Vinton, LA to Slidell, LA is 367 km, which is 198 nautical miles.
198 / 60 = 3.3
The curvature at that distance is 3.3 degrees.

Lafayette is "not far" from the center of that arc.
(Actually 150 km from Vinton and 217 from Slidell.)
The city is some 11 meters above the elevation at which "the sea would be if the land mass was removed".
The local land elevation says nothing about the shape of it, but the datum itself does.

I repeat:
Learn what is DATUM, please.

BTW, if 3.3 degrees is 367 km, then 360 degrees is
367 / 3.3 x 360 = 40 036 km, which is 24 878 statute miles (0.5% less than 25 000 miles).

Injecting your theory of elevation being measured from “Sea Curve” into an elevation map derived from Mean sea level does not verify how much alleged (X amount in feet) curvature bulge is over southern Louisiana.

According to an elevation map, a line drawn over the top of 10’ elevation markers 10 feet apart from 1 mile to 25,000 miles would reveal a horizontal line.

Learn what Level and horizontal really mean and don't make me repeat myself.

Next….

BTW.... Natural Geographic verifies elevation is measured from Sea "Level" is not measured from your imaginary sea curve or sea  circumference.



Are you skipping basic knowledge of datum deliberately?
Sea Level IS curved with the planet.
Semantics won't flatten it.

According to an elevation map, a line drawn over the top of 10’ elevation markers 10 feet apart from 1 mile to 25,000 miles would reveal a horizontal line.

34
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



Yes, you are.

I'm not your babysitter or common sense teacher.

Have a nice evening!

35
You don't know what you're talking about. That elevation map does not include circumference measurements.
Why should it?

Exactly. That elevation map has nothing to do with circumference measurements


Then why are you using it to argue circumference?

I am not.

36
You don't know what you're talking about. That elevation map does not include circumference measurements.
Why should it?

Exactly. That elevation map has nothing to do with circumference measurements


37
How was that photograph of Florida taken?

Maybe a balloon satellite that can circle above the Earth on a plane. NASA has been using this tech for decades. To get higher, they even launch them off of rockets.


You think a ballon 30 miles up can give you a view like that?

How desperate are you?

Depends on the lens used.

38
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



How can elevations (vertical distances) from sea level show if the sea level itself is curved or not?

Are you still refusing to learn what is DATUM?
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?

It is confirmed by Datum definitions, including:
NAD 27 CONUS - North American Datum of 1927 for the Continental United States (Common on older USGS maps)
NAD 83 – North American Datum of 1983 (Used on most newer USGS maps)
WGS 84 – World Geodetic System of 1984 (The default datum used by the GPS system)

I believe the elevations in the map you posted were measured relative to NAD 83.

Now:

From Vinton, LA to Slidell, LA is 367 km, which is 198 nautical miles.
198 / 60 = 3.3
The curvature at that distance is 3.3 degrees.

Lafayette is "not far" from the center of that arc.
(Actually 150 km from Vinton and 217 from Slidell.)
The city is some 11 meters above the elevation at which "the sea would be if the land mass was removed".
The local land elevation says nothing about the shape of it, but the datum itself does.

I repeat:
Learn what is DATUM, please.

BTW, if 3.3 degrees is 367 km, then 360 degrees is
367 / 3.3 x 360 = 40 036 km, which is 24 878 statute miles (0.5% less than 25 000 miles).

Injecting your theory of elevation being measured from “Sea Curve” into an elevation map derived from Mean sea level does not verify how much alleged (X amount in feet) curvature bulge is over southern Louisiana.

According to an elevation map, a line drawn over the top of 10’ elevation markers 10 feet apart from 1 mile to 25,000 miles would reveal a horizontal line.

Learn what Level and horizontal really mean and don't make me repeat myself.

You really need to do some research and educate yourself before you go popping off with things like "don't make me repeat myself." Especially when you, yet again, have demonstrated you don't know what you are even referring to let alone talking about. You've been asking for documentation and verification, and that's exactly what everyone has been giving you. Understanding the DATUM is crucial and is exactly what you're asking for.

Here's a quick primer on DATUM:

Geodetic Datums: NAD 27, NAD 83 and WGS84

"Because the Earth is curved and in GIS we deal with flat map projections, we need to accommodate both the curved and flat views of the world. In surveying and geodesy, we accurately define these properties with geodetic datums.

We begin modelling the Earth with a sphere or ellipsoid. Over time, surveyors have gathered a massive collection of surface measurements to more reliably estimate the ellipsoid.

When you combine these measurements, we arrive at a geodetic datum. Datums precisely specify each location on Earth’s surface in latitude and longitude. For example, NAD27, NAD83 and WGS84 are geodetic datums."


https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/

Read the article, it goes on to explain how the DATUM's are created.

As well, here's a quick video from NOAA about how different DATUM's are utilized for different aspects of engineering:



Put a little effort in to understanding the questions you are asking and the answers you are given.

You don't know what you're talking about. That elevation map has nothing to do with circumference measurements. You guys are trying to paint it as if it does. That's your deception. Say it, Earth is not a sphere!

39
How was that photograph of Florida taken?

Maybe a balloon satellite that can circle above the Earth on a plane. NASA has been using this tech for decades. To get higher, they even launch them off of rockets.



40
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



How can elevations (vertical distances) from sea level show if the sea level itself is curved or not?

Are you still refusing to learn what is DATUM?
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?

It is confirmed by Datum definitions, including:
NAD 27 CONUS - North American Datum of 1927 for the Continental United States (Common on older USGS maps)
NAD 83 – North American Datum of 1983 (Used on most newer USGS maps)
WGS 84 – World Geodetic System of 1984 (The default datum used by the GPS system)

I believe the elevations in the map you posted were measured relative to NAD 83.

Now:

From Vinton, LA to Slidell, LA is 367 km, which is 198 nautical miles.
198 / 60 = 3.3
The curvature at that distance is 3.3 degrees.

Lafayette is "not far" from the center of that arc.
(Actually 150 km from Vinton and 217 from Slidell.)
The city is some 11 meters above the elevation at which "the sea would be if the land mass was removed".
The local land elevation says nothing about the shape of it, but the datum itself does.

I repeat:
Learn what is DATUM, please.

BTW, if 3.3 degrees is 367 km, then 360 degrees is
367 / 3.3 x 360 = 40 036 km, which is 24 878 statute miles (0.5% less than 25 000 miles).

Injecting your theory of elevation being measured from “Sea Curve” into an elevation map derived from Mean sea level does not verify how much alleged (X amount in feet) curvature bulge is over southern Louisiana.

According to an elevation map, a line drawn over the top of 10’ elevation markers 10 feet apart from 1 mile to 25,000 miles would reveal a horizontal line.

Learn what Level and horizontal really mean and don't make me repeat myself.

Next….

BTW.... Natural Geographic verifies elevation is measured from Sea "Level" is not measured from your imaginary sea curve or sea  circumference.



41
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



How can elevations (vertical distances) from sea level show if the sea level itself is curved or not?

Are you still refusing to learn what is DATUM?
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?

42
Can anyone here give me a direct answer to the following questions in the same reply? An answer that actually applies to what is asked?

Do you believe Earth has curvature?

Are you a Globe defender?

Do you know math?

What does 2+2 equal?

What is the verified surface curvature over the center of any landmass or canal, who documented it and does it conform to a sphere with X (miles it should have) miles in circumference?
1) I do believe Earth has curvature
2) I defend round Earth, yes
3) I think I know at least some math
4) 2+2 is 4

Thanks!

43
Can anyone here give me a direct answer to the following questions in the same reply? An answer that actually applies to what is asked?

Do you believe Earth has curvature?

Are you a Globe defender?

Do you know math?

What does 2+2 equal?

What is the verified surface curvature over the center of any landmass or canal, who documented it and does it conform to a sphere with X (miles it should have) miles in circumference?

44
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



I don't understand why you use that image in reference to Earth curvature. Curvature and elevation are two separate things.

Is this a trick question?

I don't understand. Please explain.

To explain this easy: Curvature is the "roundness" of a surface. Elevation is the height (or depth) of the surface compared to the sea level.

Why you want to know the measurement of curvature specifically in Southern Louisiana I don't know. Why would it be different from measurements in Europe or Asia or Africa or wherever?

How is this?

What is the verified surface curvature over the center of any landmass, who documented it and does it conform to a sphere with a 25,000 mile circumference?

I provided a link in the 4th message (3rd reply) in this topic, please review.

How does a link to many other links answer the question?

45
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



I don't understand why you use that image in reference to Earth curvature. Curvature and elevation are two separate things.

Is this a trick question?

I don't understand. Please explain.

To explain this easy: Curvature is the "roundness" of a surface. Elevation is the height (or depth) of the surface compared to the sea level.

Why you want to know the measurement of curvature specifically in Southern Louisiana I don't know. Why would it be different from measurements in Europe or Asia or Africa or wherever?

How is this?

What is the verified surface curvature over the center of any landmass, who documented it and does it conform to a sphere with a 25,000 mile circumference?

46
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?



I don't understand why you use that image in reference to Earth curvature. Curvature and elevation are two separate things.

Is this a trick question?

I don't understand. Please explain.

47
What is the verified surface curvature over the center of South Louisiana, who documented it and does it conform to a sphere with a 25,000 mile circumference?


48
Flat Earth General / Re: Flat Earth Society Memes
« on: November 03, 2019, 10:44:57 AM »

49
Flat Earth General / Re: Flat Earth Society Memes
« on: November 03, 2019, 08:53:50 AM »
I need those glasses.


50
You like many others can claim Earth has roughly a 25,000 mile circumference but that does not make it true. It has to be verified and documented, but it never has been. The Greeks were good at popularizing myths and they’ve done a good Job with the Globe myth.

Myths are popular in this world and at this point, Globe Earth as proclaimed is all pseudoscience until someone can prove otherwise.

Don't say we're morons when none of you have the facts of a 25,000 mile circumference. We are stating facts on this issue and we are still waiting!

Good luck!

No unrelated issues or passing the buck, please.






51
Flat Earth General / Re: Flat Earth Society Memes
« on: November 02, 2019, 10:30:26 AM »

52
Flat Earth General / Re: Flat Earth Society Memes
« on: November 01, 2019, 08:57:43 PM »

53
Flat Earth General / Re: Flat Earth Society Memes
« on: November 01, 2019, 10:08:47 AM »

54
Flat Earth General / Re: Flat Earth Society Memes
« on: October 31, 2019, 09:49:39 PM »

55
Flat Earth General / Re: Flat Earth Society Memes
« on: October 30, 2019, 06:30:28 PM »
Globies say the dandiest things.


56
Flat Earth General / Re: Flat Earth Society Memes
« on: October 30, 2019, 06:28:20 PM »
and pure crap!

57
Flat Earth General / Re: Flat Earth Society Memes
« on: October 29, 2019, 11:43:01 AM »

58
Flat Earth General / Re: Flat Earth Society Memes
« on: October 29, 2019, 09:29:34 AM »

It would only be 4 feet below the line of sight if camera or binoculars were at zero feet. The distance to the horizon and the amount hidden depend on the height of the observer.
https://dizzib.github.io/earth/curve-calc/?d0=3&h0=2&unit=imperial
It's the same mistake many flatties make when claiming objects are visible which should be over the curve. But you knew that already, right? I'm guessing you didn't and you'll likely still make the same mistake again.


And you proved me right. You continue to make the same mistake. The curvature chart you posted is for the drop but does NOT show how much should be hidden which changes based on observer height. That you still don't understand that when it has been pointed out to you multiple times shows you don't understand the subject you argue against.
Yet another fail from Plat Terra

Here's another prediction: You'll still continue to make this same mistake.

Thanks for the humor!

You are confused and giving the humor.

With your face on the ground looking straight ahead with level line of sight, the flag would be 6' below your line of sight at 3 miles.

And at 2' as you look straight ahead with a level line of sight, the flag would be 4' below your line of sight at 3 miles.   My math is correct with a level line of sight. Got that yet?


You've proven me right again.
did you forget your hypothetical flag was at 2 feet? Now you're claiming it should be 6 feet below your line of sight at three miles?
No, that is not how it works. You didn't bother to check the link provided, did you? Here it is again but I'm thinking you'll ignore it again.

https://dizzib.github.io/earth/curve-calc/?d0=3&h0=2&unit=imperial

It should have the units in question prefilled but you can adjust them and can see how much should be hidden. The amount of drop only equals the amount hidden if you view from zero feet. Raise the observer height and the amount hidden decreases as your horizon is farther and you can see more over the curve. it isn't a straight add/subtract. Alternatively you could do the math yourself but everyone knows you can't do that.

The Dunning-Kruger is strong in you. I'm thinking you'll still continue to get this wrong. You don't seem to take criticism well as you've shown in your inability to understand the difference between drop from curvature and elevation.

Your argument is insignificant, lame and ridicules coming from an educated man.  You’re just trying to get lame brownie points.  The issue is about where the “Surface is in curvature drop” from a level point of view and not about the elevation of the flag and how much should be hidden. The flag is just a surface marker. It’s a surface marker, got that yet?

59
Flat Earth General / Re: Flat Earth Society Memes
« on: October 28, 2019, 10:32:21 PM »

It would only be 4 feet below the line of sight if camera or binoculars were at zero feet. The distance to the horizon and the amount hidden depend on the height of the observer.
https://dizzib.github.io/earth/curve-calc/?d0=3&h0=2&unit=imperial
It's the same mistake many flatties make when claiming objects are visible which should be over the curve. But you knew that already, right? I'm guessing you didn't and you'll likely still make the same mistake again.


And you proved me right. You continue to make the same mistake. The curvature chart you posted is for the drop but does NOT show how much should be hidden which changes based on observer height. That you still don't understand that when it has been pointed out to you multiple times shows you don't understand the subject you argue against.
Yet another fail from Plat Terra

Here's another prediction: You'll still continue to make this same mistake.

Thanks for the humor!

You are confused and giving the humor.

With your face on the ground looking straight ahead with level line of sight, the flag would be 6' below your line of sight at 3 miles.

And at 2' as you look straight ahead with a level line of sight, the flag would be 4' below your line of sight at 3 miles.   My math is correct with a level line of sight. Got that yet?


60
Flat Earth General / Re: Flat Earth Society Memes
« on: October 28, 2019, 06:23:49 PM »

It would only be 4 feet below the line of sight if camera or binoculars were at zero feet. The distance to the horizon and the amount hidden depend on the height of the observer.
https://dizzib.github.io/earth/curve-calc/?d0=3&h0=2&unit=imperial
It's the same mistake many flatties make when claiming objects are visible which should be over the curve. But you knew that already, right? I'm guessing you didn't and you'll likely still make the same mistake again.


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