However, when we remove the concentric circles surrounding the right box, we find that they are actually the same size. This is a typical illusion. So this visual error is probably also a reason why p

However, when we remove the concentric circles surrounding the right box, we find that they are actually the same size. This is a typical illusion. So this visual error is probably also a reason why people think this well has a magnifying effect. Although the standard lens of this camera is very close to our physiological angle. But I'm afraid it still has some subtle differences. Therefore, we have considered the reason why this well can magnify coins, consulted experts, and now we have concluded two reasons. One may be due to the air lens; the other is the visual error we mentioned earlier. Which one should play the decisive role? We are currently unable to give you a very definite answer. But no matter what, we believe that this is definitely not a supernatural phenomenon, and it can definitely be solved using scientific methods.