Got a bit frustrated because I couldn't get anything except a flat surface above the water, then read the tweets below and realised that's the entire point:

https://threadreaderapp.com/thread/1362557149147058178.html

(Many thanks to Elon for making it impossible to read more than the first tweet on x.com without an account...)

Author here. Glad to see this making the rounds again after a few years.

Go science! Support your local climate scientist!

I got a design which wobbles infinitely! :D The clip was live recorded, not looped.

https://streamable.com/0a9zmb

A version which has some preloaded shapes and shows the forces explicitly, inspired by the same tweet: https://engaging-data.com/iceberger-remixed/

This is all from 2021 and I feel like I’d seen this prior to that but I can’t find it.

The HTML source code is a well-commented, fun read.

- There's a fair bit of math to model drag, mass, and density using the specific gravity of ice and seawater (with tweaks to make it more realistic for 2d).

- Try adding a polygon that overlaps itself (self-intersects).

- You can paste images! The code traces the image and picks the most complex polygon.

This is great fun--and accurate. My lettuce floated just like the picture I drew when I tested it in the bath.

(2021)

https://news.ycombinator.com/item?id=26201160

No idea if others at Twitter suggested this as I can't read the thread (and have no intention to subscribe) but a nice add on would be a score inversely proportional to the travel an iceberg would need to obtain a stable floating position, with ideally the very hard goal to draw it already in a perfect stable way, waterline height included.

Very cool (literally) stuff. I drew a straight line and it keeps spinning :D

Kinda funny to draw the classic examples of "tip of the iceberg" to see them ending up flipping :D

The center of displacement is always below the center of mass, so the iceberg never gets the stability of a rock hanging on a thread (ships can do that with ballast).

The only way for an iceberg to achieve stability is "differential" - every infinitesimal movement needs to move the center of displacement in a way which counters the movement. This basically means flat bottom.

https://i.imgur.com/z7mQVWq.png

https://i.imgur.com/YLPYITL.png

https://i.imgur.com/Q7T0zns.png

Not so easy to get just the tip of the iceberg to stand out.

I’m so over flappy birds now.

To the author: Would be interesting to store all the shapes people are creating and let us quickly browse through them.

Mostly penises most likely (like any "draw something online" service).

(I am also guilty)

This is very entertaining.

From my brief experimentation I have determined that the precise initial orientation of the dick^H^H^H^Hiceberg is critical to its final orientation.

How do we know there is only 1 stable position?

(A perfect circle would have many, but you could consider that a degenerate configuration.)

It would be interesting to create a version of this that would show how different displacement hull shapes would float.

For me multiple humps seems to be most stable

Would be cool if it melts preferentially, choosing either air or water to be "warmer".

My fun was to try to get the widest underwater part with the narrowest top showing above.

This reminds me of gömböc

Very cool, simple, and easy. This is exactly what demos should be.

This would make a great "fidget" app

Bug? https://i.imgur.com/VraUTnq.png

Now let a polar bear walk on it.

Note that many icebergs have more than one equilibrium, with various final heights above the water.

For example this iceberg towers above the water in one equilibrium, but barely rises above the water in its other equilibrium.

https://ibb.co/SdcKMBV