posted on Jun, 28 2016 @ 10:05 AM
originally posted by: thesneakiod
We are now getting told time and time again by scientists that the earth is not a perfect sphere but more squashed in the middle. Like a spheroid.
So every picture we've ever seen of the earth taken from space has been fake.
Non-sequitur. You seem to be assuming a priori that images of earth taken from space do not show the expected amount of oblateness of the spheroid,
but you have utterly failed to demonstrate this. Earth's oblateness is determined by satellite telemetry, it's too small to notice by eye in a
picture (and even with measurement there's not enough resolution there to compete against direct telemetry data). Here, let me demonstrate:
The pale blue circle is a perfect circle, the dark blue outline has the same oblateness as the earth, yet if I didn't tell you beforehand, you'd
probably look at that and say that it looks perfectly circular to you. The images from EPIC show earth is NOT a perfect circle, same as the above
diagram, if you actually measure it.
Take a magic wand tool in your favorite image editing program. I use GIMP, so I'll refer to GIMP commands. First copy the image into GIMP from the
EPIC website. Now select the magic wand tool and click the black area around earth. Now click select->Invert. Now click edit->copy. You now have
selected and copied just the earth itself. Now paste this as a new image by clicking edit->Paste As->New Image. You now have an image of just the
earth surrounded by transparency. How wide is the earth in the image? The same width as this new image itself. 1672 pixels. How tall is the image?
Same as the height of the earth itself in the image, 1663 pixels. Wait, those values aren't the same! Earth IS slightly wider in the image than it
is tall. How different should the polar and equatorial radius of the earth be?
"The Earth is only approximately spherical, so no single value serves as its natural radius. Distances from points on the surface to the center
range from 6,353 km to 6,384 km"
So the image should be about 1.00488 times as wide as it is tall. 1663*1.00488=1671.12 Not bad, not bad at all considering we didn't even fine tune
the sensitivity of the wand tool, just default settings. Earth IS oblate in the image, just as it should be: