[ art / civ / cult / cyb / diy / drg / feels / layer / lit / λ / q / r / sci / sec / tech / w / zzz ] archive provided by lainchan.jp

lainchan archive - /r/ - 288



File: 1492173864717.png (516.63 KB, 300x265, nature22031-f1.jpg)

No.288

Starting a general science thread while the gods decide if /sci/ is resurrected or replaced. Post whatever you want as long as it's meaningful and science related.

Apparently some scientists found out that some reptile scales are cellular automata with respect to their color:
http://www.nature.com/nature/journal/v544/n7649/fig_tab/nature22031_F1.html

I can't recall any previous examples of cellular automata in nature (besides cells themselves), so this could be big. I won't be surprised if scientists start to find more of these in nature, since cellular automata and evolution seem to be closely linked.

  No.296


  No.310

>>288
It is very interesting to observe processes and events that were once thought to exist only in the realm of theoretical mathematics play out in nature. The discovery of naturally occurring cellular automata is a rather remarkable one to say the least.

An idea for a cell based biological computer just popped into my head as I was typing. I don't know how feasible it is to make such a thing, but it is interesting to think about.

  No.319

>>310
I would say the brain is a sort of biological cellular automaton, since neurons are discrete and the system involves neighbor to neighbor activation. Of course it's a lot more complicated than the typical "Game of Life"-type systems, but I wonder if that design has roots in a simpler neighbor-to-neighbor activation system, and how much modification to the rules you need in order to get to something as complicated as a brain.

  No.344

>>296
Hasn't been updated in years. Https://storj.io is what's active

  No.753

File: 1492410963156.png (24.77 MB, 210x300, surrealCalculus.pdf)

Hey old /sci/ dwellers.
I'm studying vector calculus and I'm searching for a book that describes spherical base vectors.
If anyone has any pointers I'd be more than grateful.

I offer the board this book. It describes a construction for calculus through the use of infinitesimal numbers instead of the traditional approach of using limits.

I hope someone finds this book useful.

  No.755

>>753
Oh I just realized that the book I posted contains something about spherical coordinates.

lol.. but having more than one perspective is always useful.. right?
So my request still stands.