Demonstration of Earth's shadow on moon

Around 350 BC, Aristotle gave several arguments for the earth being a globe. One of Aristotle's arguments was that the earth's shadow on the moon during a lunar eclipse is always circular. A round, flat object can cast a circular shadow, but only for one specific orientation. The only shape that consistently casts a circular shadow regardless of orientation is a sphere. Having seen more than a dozen total lunar eclipses, as well as many partial lunar eclipses, I can attest to this observation. Since everyone can see this for themselves, this has always been one of my primary arguments for the earth being spherical.

I previously made a video showing that if a light source is larger than an object casting a shadow, then the shadow is smaller than the object casting the shadow. Since the sun is larger than the earth, this is relevant to the earth's shadow falling on the moon during a lunar eclipse. Here is the link to that demonstration:

That video refuted a common flat-earther argument about eclipses. In this video, I address another common flat-earther claim about lunar eclipses. Some flat-earthers have made videos that show the shadow of one ball on another ball. The shadows in those videos do not look circular, from which flat-earthers conclude that they have disproved the conventional understanding of eclipses. The error that I automatically spot in these videos is that the camera is displaced from the line connecting the light and the two balls. During a lunar eclipse, the moon, earth, and sun are nearly colinear, so by displacing the camera so, flat-earthers have failed to replicate the conditions of a lunar eclipse.

In this demonstration, I used the floodlight and Wiffle ball from my previous video, but I added a larger Wiffle ball. This larger ball is still smaller than the light source. The larger ball represents the earth, and the smaller ball represents the moon. As you can see, the shadow of the larger ball on the smaller ball is circular, just as the earth's umbra during a lunar eclipse is circular. In this demonstration, the angle between the directions of the camera and light measured at the smaller ball is about 10 degrees. Since the angle is not zero, there is a slight distortion, causing the apparent shape of the shadow of the larger ball cast onto the smaller ball not to be exactly circular, but the difference from a perfect circle is not so great as to be noticed by the eye. However, as this angle is increased, the distortion rapidly grows. In a third video I will demonstrate what happens when the angle is much greater than zero degrees, as is the case in flat-earther videos.

[emrw]

From what I understand the moon phases are not caused by earth shadow. Moon phases are actually caused by how the light from the sun hits earth. This explains why you can see the moon in the sky during the day time, because it has nothing to do with earth’s shadow. Only lunar eclipses are caused by earths shadow, and never happen during relative daytime. Great demonstration on how a lunar eclipse happens and that it it does cause a “curved shadow.”

[garadworthington]

Would you mind doing an experiment showing how when the sun and moon are in the sky at the same time, how the moon appears to be a crescent

[builtontherockproductions]

except it is not how it works at all. And try to deploy the red coloring. You cant but you can make up theory. And let me guess in order to explain your theory you must use more theory. Pseudoscience. The glass dome firmament would explain the curve as well as the red lighting because of the way glass refracts and slows light waves down individually based on spectrum. Red travels through faster so it would be the first light and last light we see as the moon goes through this filtered light. Furthermore a solar eclipse shadow of the moon goes west to east. Yet the earth rotational timing is around 28 times faster the the evolution of the moon aroudn the earth. This would make the moon shadow go east to west yet it does not. There is a reason why no real animation of the solar eclipse exists and this is the math. You cannot fake it. Try and you will fail. Try to find a digital animation of the solar eclipse using the math that globe model gives. It does not work. They tried to create one and in order for the shadow to go in the direction they wanted they spun the orbit of the moon up and slowed the earth spin down. When people saw that they removed this digital model. Dont use theory to explain anything or you are just a pseudoscience brainwashed person. Then I can take nothing you say serious. Using theory to explain theory is fraud.