who says earh is flat?

 SCIENCE IS NOT TRUE FOR ALL TIME#.

 

• But when science experiments are performed incorrectly they can appear to give the opposite result. If they are shared through social media, these false ideas can be spread quickly with no one to point out their flaws. One common example is the Bedford Level experiment, a form of which was first carried out in 1838 and used to "prove" the   for over 30 years before an explanation was found.

This experiment involved placing a marker at a set height at either end of a canal about six miles long. If the Earth is round, then one marker should appear lower than the other when viewed at the same time through a telescope because the furthest marker would have fallen away with the curvature of the Earth. But it was reported that the markers are the same height, suggesting the Earth is actually flat. Modern day Flat Earth theorists  this experiment.
The problem is this doesn't take into account the optical effect of the air over the intervening water, which bends or "refracts" the light as it travels from the marker to the telescope and makes it look like they are the same height. The solution is to use multiple markers along the length of the canal which, when observed, all appear to be at different heights.
Perhaps the most impressive experiment that even schools can do today is to send a camera up in a high-altitude balloon. The footage will show that from a high-enough vantage point you can see the curvature of the Earth. This is what Mike Hughes will find if he ever makes his rocket work.
Ultimately, arguing on the internet is not the best way forward for any scientific endeavour. We need to provide the means for people to test these theories themselves and to understand the results they get..

 


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