what is the diameter of the earth? and how was it determined?

Find a point in 3D space. Then take a distance, say d= 1. If you map all points with distance 1 to that point you will get a spherical shape.

This can be demonstrated easily in 2D space by getting a protractor and spinning it around a point on a piece of paper. This is a circle.

Hence in order to minimize R, water would form in a circular shape

My argument is irrelevant to whatever you take as the diameter of the earth. Take whatever you want, and my argument should hold.

water forms a spherical shape due to surface tension. not "gravity"

try again

If you are arguing the earth is flat it makes no sense to argue water forms a spherical shape regardless of what phenomena causes it

it only forms a spherical shape when surrounded by air. because a sphere has the lowest ratio of surface area to volume

but totally irrelevant to the shape of earth's surface. what's more relevant is that water is always level

https://en.wikipedia.org/wiki/Water_level_(device)

"The water level is lower-tech than the laser level, but it can be more accurate over long distances"

The shape of the earths surface is irrevelent it will flow towards the location that minimizes R

water = level. Earth's surface = >70% water. Earth's surface = level

cope

Hold up my bad I'm in class I'll read what you sent me

gimme a bit lol

Computer engineering major

Water is always level unless a stronger force works against it

You admitted this yourself by admitting that water can take a sphere shape

Inside a container

yes true slash

Water sicks to itself. Surface tension isnt gravity

water takes a spherical shape to minimize surface area to reduce the free energy of the system because of both enthalpic and entropic penalties due mostly to hydrogen bonding

if there is a container, water will seek to minimize surface area by filling said container leaving a level surface

Lograian: one can take an angle from 1 side of the water to the center of the earth to the other end of the water. If this angle is negligable then practically speaking the water will appear in your image. If the angle is not negligable then the spherical phenomena will occur I described earlier.

Technically speaking this water is not completely strait however but the difference is too negligable to notice.

This can be explained intuitively by drawing a circle on your favorite graphing software. Pick a point on the circle and zoom into it a lot. It will appear to be a line even though it has curvature.

""The water level is lower-tech than the laser level, but it can be more accurate over long distances""

Probably not as other forces would be at plau

play*

for small angular values

water = level

cope

oh heck

Go on your favorite graphing software. Choose a circle. Then zoom into it a lot. Report back to me what it look like? Not curved anymore perhaps?

Saying it a second time now.

great. then find me ONE published journal article showing the direct measurement of Earth's curvature

should be hundreds if not thousands

go

Flat earth... you litterly explained my point. Water stays level unless a stronger force works against it

learn to spell first

then come back to this server