this post was submitted on 30 Nov 2023
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Science Memes

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[–] mvirts@lemmy.world 70 points 2 years ago (3 children)

Lol this heightmap is so exaggerated

[–] DeusHircus@lemmy.zip 35 points 2 years ago

Lol wildly exaggerated. Largest height difference on Earth's surface is 13 miles (including underwater) vs. the 8,000 mile diameter. To quote NDGT, "The Earth is smoother than a cue ball"

[–] mexicancartel@lemmy.dbzer0.com 17 points 2 years ago

If it wasn't, there will be no atlantic (or even pacific) for us to see

[–] zaphod@feddit.de 4 points 2 years ago

Might just be the angle of the light.

[–] maeries@feddit.de 44 points 2 years ago (1 children)

That's not to scale, right?

[–] fossilesque@mander.xyz 38 points 2 years ago* (last edited 2 years ago) (1 children)

It's the Instagram filter.

https://ourplnt.com/earth-without-water/

The original is a exaggerated estimate (projection) based on a assumed sphere, probably WGS84, because a lot of the global satellite data is formatted as such.

https://en.wikipedia.org/wiki/List_of_map_projections?wprov=sfla1

[–] Eheran@lemmy.world 74 points 2 years ago (4 children)

"reality" as in extremely exaggerated deviations from the ellipsoid. Otherwise it would just look like a smooth sphere. Earth has 12'700 km diameter. From the shallowest point to mount everest are just about 20 km. That is a 0.15 % change. You would see nothing.

[–] kn0wmad1c@programming.dev 23 points 2 years ago

To put in perspective how shallow a 0.15% change is, a dimple on a golf ball is roughly 4 times deeper than that (0.60% of a difference in depth).

[–] MoonManKipper@lemmy.world 13 points 2 years ago

Bang on, the Pacific is not 250 miles deep…

[–] Zoboomafoo@lemmy.world 10 points 2 years ago (1 children)

"Smoother and rounder than a bowling ball" is my usual comparison

[–] Eheran@lemmy.world 1 points 2 years ago

I think that would be too much. A bowling ball is really smooth. It would not roll as well with such deviations all over the place.

At a diameter of 22 cm, the roughness would have to be in the order of 0.3 mm, which would not just be visible due to the distorted reflections, it would even be audible while rolling.

[–] umbraroze@kbin.social 27 points 2 years ago (1 children)

In Finnish language we already have the kinda rare expression "rapakon takana" ("behind the mud puddle") about stuff that's happening in America.

[–] ASeriesOfPoorChoices@lemmy.world 21 points 2 years ago

Both the UK and the USA refer to it as "the pond". As in "across the pond".

[–] MacNCheezus@lemmy.today 13 points 2 years ago

You VS. the ocean she told you not to worry about.

[–] Hupf@feddit.de 9 points 2 years ago

Atlantic was surveyed in imperial units, Pacific in metric.

[–] plistig@feddit.de 4 points 2 years ago (1 children)

"Draining Earth's oceans, revealing the two-thirds of Earth's surface we don't get to see": https://www.youtube.com/watch?v=-uOwv_Krqk8

[–] nixcamic@lemmy.world 7 points 2 years ago (1 children)

In this you can see they're about the same depth.

[–] jmcs@discuss.tchncs.de 3 points 2 years ago (1 children)

At a global scale, the Mariana Trench and the Everest are the same depth. It's less than 20 Km of difference against a mean diameter of 12742 Km.

[–] jeena@jemmy.jeena.net 4 points 2 years ago (1 children)
[–] rockerface@lemm.ee 5 points 2 years ago

Smooth as a shark, as they say

[–] Dasnap@lemmy.world 3 points 2 years ago

Paddling pool vs. diving zone.