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Author Topic: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?  (Read 216159 times)

SkyWatcher123

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #375 on: September 08, 2016, 07:14:07 AM »
Very nice.  :) ;)

tagor

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #376 on: September 08, 2016, 07:33:17 AM »
Two more videos to ponder....  Mountains of Evidence & 6KM high powered laser test.

https://www.youtube.com/watch?v=fHJ8QowrcIA

https://www.youtube.com/watch?v=fHJ8QowrcIA

and the Gyros may tell the story even further...

https://www.youtube.com/watch?v=DeSUvYQ4Tc4

I love to question everything...makes for an wonder-full life to me!

j'ai deja repondu a vos pseudo arguments

votre prosélytisme est en totale contradictions avec les regles de base de ce forum

harti can you ban this guy ?

tagor

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #377 on: September 08, 2016, 07:35:51 AM »
one youtube doubled up. Laser youtube never made it.
Here it is:
https://www.youtube.com/watch?v=GBhDFO4NMrw

can you stop yours BS ?

votre prosélytisme est en totale contradictions avec les regles de base de ce forum

harti can you ban this guy ?

tagor

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #378 on: September 08, 2016, 07:37:22 AM »
Very nice.  :) ;)

are you serious ?

this is all BS from flatearthers scam artists


TinselKoala

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #380 on: September 08, 2016, 12:03:08 PM »
Yes, but that's different because these green  tracks go off into the distance along the Z axis of the camera's vision.
The perspective distortion would not be able to distort the parallelness of e.g. these black poles planted along the tracks (because these poles are parallel to the Y axis of the camera's vision).

The sunrays in that image were not along the Z axis so they could not have been affected by the perspective distortion like the tracks.

Not at all. You can find many photos of tall buildings that appear to lean "inwards" toward the top. Also, architects know about this vertical perspective situation as well. For example the minarets of the Taj Mahal are actually built with a slight outward lean so that they appear vertical when viewed from the main gate.

https://dilemmaxdotnet.files.wordpress.com/2013/06/cayan-tower2.jpg

Many photos of city skylines can be found that show this perspective tilt, and many others can be found that do not, either because it has been corrected in processing or a particular angle has been used. Also remember that even the tallest buildings aren't nearly as high as the normal cloudbase on a fine fairweather cumulus day.

Not only that... but your black poles next to the railroad tracks look like they are getting shorter the farther away they are. Do you think this is real, or is it a result of perspective acting in the y-direction?

TinselKoala

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #381 on: September 08, 2016, 12:13:22 PM »
one youtube doubled up. Laser youtube never made it.
Here it is:
https://www.youtube.com/watch?v=GBhDFO4NMrw

That's pretty silly. It has been known for a long time that the air over bodies of water can refract light beams, so objects that are actually "below" the horizon can _appear_ to be above it. It's a well-known cause of "mirages".  This is because of the dependence of refractive index of air on temperature differences in various layers of air-- the same thing that makes stars "twinkle" and appear to move around a bit at night.  Unfortunately -- for you and other flat-earthers -- this laser test is invalid for that reason.

conradelektro

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #382 on: September 08, 2016, 01:18:34 PM »
Eratosthenes did it more than 2000 years ago:

https://en.wikipedia.org/wiki/Eratosthenes#Measurement_of_the_Earth.27s_circumference

http://www.dummies.com/education/math/geometry/how-to-determine-the-earths-circumference/

Other very old measurements:

https://www.britannica.com/topic/Measuring-the-Earth-Classical-and-Arabic-1673315

https://en.wikipedia.org/wiki/History_of_geodesy

But of course, they were all wrong, the earth is flat, just look out of your window. :'(

Give a tool like a laser into the hands of silly people and you will get silly results and damaged retinas. Watching these people on lake Balaton disregarding the dangers of a laser (it could easily damage your retina in the eye) raised my hair. So, please do not use lasers like an idiot, stick to the ancient measurement methods, they are straight forward.

Simple test of flatness:

Put a stick into the earth on two different locations a few hundred miles apart as vertical as you manage. And then place a person next to each stick with a cell phone. Establish a call and compare the shadow of the sticks. It works best around mid day.

Of course you should know that the sun is very far (millions of miles) away (and not close to the earth surface as some flat people want you to believe).

I know, this has all been said here before, but some people just do not understand reality.

I like this old method:

https://en.wikipedia.org/wiki/History_of_geodesy#Al-Biruni

You only have to measure an angle on the top of a mountain (dip angle towards the plain around the mountain, could be a mountain near a lake or the sea)  and you have to know the height of the mountain relative to the plain. Even if you only know the height of the mountain approximately (50 meter accuracy, a map will tell you) it will show that the earth has to be a sphere and not flat.

If the mountain is 500 meters high (above the plain, lake or sea you use as a reference for the drop angle) the drop angle is about 0.7 degrees. So, you need a good surveying instrument (https://en.wikipedia.org/wiki/Theodolite, minute resolution).

This theodolite should do http://www.u-t-b.at/at/vermessungsgeraete/theodolite/mechanische-theodolite/geofennel-fet-500.html#.V9F24q04r9A , resolution 0.1 gon (about 0.1°) if you only want to proof that the earth is a sphere. The calculated radius will be between 4000 and 10000 kilometres, which is well beyond flat.

Greetings, Conrad
« Last Edit: September 08, 2016, 04:41:08 PM by conradelektro »

verpies

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #383 on: September 08, 2016, 02:22:36 PM »
Not only that... but your black poles next to the railroad tracks look like they are getting shorter the farther away they are. Do you think this is real, or is it a result of perspective acting in the y-direction?
I think the black poles are getting visually shorter in the y-direction, because of the perspective effect.

verpies

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #384 on: September 10, 2016, 10:06:37 AM »
That's pretty silly. It has been known for a long time that the air over bodies of water can refract light beams, so objects that are actually "below" the horizon can _appear_ to be above it. It's a well-known cause of "mirages".  This is because of the dependence of refractive index of air on temperature differences in various layers of air-- the same thing that makes stars "twinkle" and appear to move around a bit at night.  Unfortunately -- for you and other flat-earthers -- this laser test is invalid for that reason.
I have to agree with that.  Any long-distance optical observations in the atmosphere are not trustworthy because the atmosphere is a giant convex lens and the density gradients over water make atmospheric ducting even worse.
I was always curious what its average focal length is, ...as viewed from outside of the atmosphere.

So all of the long-distance visual evidence can be thrown into a proverbial "garbage", regardless whether it supports flat-Earth or curved-Earth.

An optical experiment that conclusively measures the curvature of the Earth would have to be arranged like this:

verpies

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #385 on: September 10, 2016, 10:35:41 AM »
Eratosthenes did it more than 2000 years ago:
https://en.wikipedia.org/wiki/Eratosthenes#Measurement_of_the_Earth.27s_circumference
Eratosthenes used two points of measurement, but a three colinear points of measurement would need to be made at the same time to accurately gauge the curvature without any further assumptions.

Also, Eratosthenes did not account for the refraction of sunlight by the atmosphere which is giant convex lens over Earth's surface.

verpies

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #386 on: September 10, 2016, 11:10:33 AM »
You can find many photos of tall buildings that appear to lean "inwards" toward the top.
Only because the Z-axis distances from the observer to the base and top of the building are not the same, when the observer stands on the ground. 

If the Z-axis distances are the same for the observer, then the perspective is unable to create this illusion of "leaning inwards toward the top".

AlienGrey

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #387 on: September 10, 2016, 01:53:27 PM »
Yes it's all very amusing isn't it (that's not a question), Have any of you ever seen a poltergeist at work or seen an entity ? they are clever beings they  lie and deceive, pretend to be a child to gain entry  and are excellent at trickery,

I've come to the conclusion any form of manipulating control is demonic and this stuff is linked to religious days of old and now evil manipulators, if you want to go down this route then perhaps your going to end up with the controlling entity's your entertaining when you pass over, because that's the name of the game they are playing with you, be careful what deception you choose.
« Last Edit: September 10, 2016, 11:21:33 PM by AlienGrey »

tagor

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #388 on: September 10, 2016, 04:27:27 PM »
Only because the Z-axis distances from the observer to the base and top of the building are not the same, when the observer stands on the ground. 

If the Z-axis distances are the same for the observer, then the perspective is unable to create this illusion of "leaning inwards toward the top".



Distance to horizon
http://williams.best.vwh.net/avform.htm#Horizon

Quote
    At a height h above the ground, the distance to the horizon d, is given by:

      d = sqrt(2*R*h/b)

    b=0.8279 is a factor that accounts for atmospheric refraction and depends on the atmospheric temperature lapse rate, which is taken to be standard. R is the radius of the earth. Note that the earth is assumed smooth- likely only true over the oceans!

    For h in feet and d in nm:

     d =1.17*sqrt(h)

    i.e. from 10000 feet, the horizon is 117nm away

    (Reference Bowditch American Practical Navigator (1995) Table 12.)




for the earth R = 6380 km (  3970 miles )

Quote

sur la photo " the observer" regarde le mont Mc kinley qui est à 140 miles soit 225.3 km
tout en etant a 2089 ft soit 636 m

la hauteur du mont Mc kinley est 3.8 miles soit 4828 m

j'utilise la formule d = sqrt(2*R*h/b)
et je calcule l'horizon optique
depuis le mont Mc kinley soit 4828 m
l'horizon optique est : 272.8 km   => il est donc évident que l'on peut voir " the observer " depuis le mont Mc kinley

calcule de l'horizon optique depuis l'observateur " the observer " ( qui se trouve a 2089 ft soit 636 m )
l'horizon optique est : 99 km il est evident que l'on ne peut pas voir entièrement  le mont Mc kinley

mais en prenant la formule H = D*D / ( 2 * R )

avec D = 225.3 - 99 km
on trouve H = 1250 m

donc depuis " the observer " on peut voir  le mont Mc kinley a partir de 1250 m



we can see mount Mc kinley above 1250m

Quote

you pass over, because that's the name of the game they are playing with you.


yes

gravityblock

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Re: Is The Earth A Flat Round Disc or Is It a Round Spherical Globe?
« Reply #389 on: September 25, 2016, 06:17:27 AM »
Grab some popcorn...  ;D

Gravock