Is Earth round or flat ?

[dinsdale]

1 minute ago, Stiddle Mump said:

How do you know? Because you have been told by someone?

[uncletiger]

3 hours ago, Stiddle Mump said:

How do you know? Because you have been told by someone?

No.

 

Because I can physically verify gravity exists. I just dropped a rock out my window and it fell down. I verified that the rock falls at approximately 9.8 m/s^2, consistent with both Newton and Einstein in non relativistic frames. Now, knowing that, I can apply simple physical laws to verify that a mass of sufficient size can not remain flat and stable. It would either break up, or it would collapse into a ball. And even if you tell me my models of gravity (i.e. that it is an emergent property of curved spacetime) are incorrect, any model you come up with must still behave according to the rules which we can determine from basic observation and math.

 

So if you are going to argue the Earth is flat, you might as well argue that 2+2=5. Any sufficient mass will form into a ball or break apart. It has no other choice.

[rattlesnake]

6 hours ago, cjinchiangrai said:

Not by biased ignorant morons. This is settled science for thousands of years and reconfirmed in our lifetimes. 

 

It has been the doxa since the 17th century.

[Photoguy21]

Bit of a ridiculous question as it is obviously round. If it was not round then it would be daytime in every country at the same time and night all at the same time which it obviously isn't

[Stiddle Mump]

23 minutes ago, Photoguy21 said:

Bit of a ridiculous question as it is obviously round. If it was not round then it would be daytime in every country at the same time and night all at the same time which it obviously isn't

But what if Galileo was wrong and the church was right? The sun revolves around the earth.

 

Science has to be challenged.

[rattlesnake]

54 minutes ago, Photoguy21 said:

Bit of a ridiculous question as it is obviously round. If it was not round then it would be daytime in every country at the same time and night all at the same time which it obviously isn't

 

Here is a demonstration of the geocentric model:

 

 

 

[parallelman]

43 minutes ago, Photoguy21 said:

Bit of a ridiculous question as it is obviously round. If it was not round then it would be daytime in every country at the same time and night all at the same time which it obviously isn't

Well, FE's don't see it that way. Have you looked at the their model? The Sun, well that is, their Sun, doesn't illuminate the whole FE, just portions of it at any given time. That is, the Sun acts like a 'spotlight'. It is a FE ad-hoc solution with no observational or scientific backup.

[Photoguy21]

23 hours ago, Stiddle Mump said:

But what if Galileo was wrong and the church was right? The sun revolves around the earth.

 

Science has to be challenged.

Nothing to do with Galileo, the sun would still illuminate the entire earth at the same time. What you are suggesting is nont sciece it is stupidity.

[Photoguy21]

23 hours ago, rattlesnake said:

 

Here is a demonstration of the geocentric model:

 

 

 

For that the earth would have to be flat

[parallelman]

1 hour ago, Photoguy21 said:

For that the earth would have to be flat

There is a bigger problem with the vraious flat Earth models, including that particular geocentric illustration. Depending on what model one looks at the Sun is claimed to be somewhere between 3000-5000 miles (4828-8047 km) above the surface and that means the Sun is a great deal smaller than the 109 Earth diameters as measured by astronomers. The first problem is that no matter where you are on the Earth (globe or flat) the Sun angular size is a little over 0.5^o. But on a FE models it would only have that angular size if the sun was directly overhead and moving away the Sun would appear progressivly smaller. This doesn't happen on the globe Earth because the Sunn is so far away that moving from one country to another hardly makes any difference. But there is a bigger problem. The current value for the amount of the Sun's energy on the Earth is about 342 Watts per square meter and as you know, the Sun's energy is important for life on Earth. On a FE it will be just as important. However, the Sun is much smaller on a FE and with an angular size of  0.5^o and 5000 miles above the diameter of the Sun would  only be about 44 mile (just over 70 km). So how is it that something so small can continuosly over many years, supply us with that much energy?