Top #physics dweets

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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Agnes

function u(t) {

with(x)for(c.width|=i=9,scale(m=100,m),font='2px A',fillText("🚚",r=20-t*(1+.2*C(t)),6);i--;fillRect(Math.min(4+i+S(t)*3,r+i/2-4),4,.5,2));

Mar 9 2018 1:49 PM UTC

}// 138/140

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u/fujimotos

Haha, good.
u/jylikangas

Awesome! Reminds me of Shikato animations. :D
u/aleamb

Lol! nice!
u/Xen

love it :-)
u/magna

LOL
u/M1T0

haha very smart
u/Agnes

#default
u/joeytwiddle

#physics
u/micahcowan

#truck #emoji
u/vain

haha... great idea and impressive implementation

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puckipedia

function u(t) {

c.width+=0,c.onmousemove=d=>a=d.clientX*3;z=(t?z:Array(f=1e3).fill([a=f,0])).map(([w,e],i)=>(x.fillRect(w,i,9,9),[w+e*i/f+e/9,(e*6+a-w)/9]))

Mar 1 2017 7:29 PM UTC

}// 140/140

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Just a wobbly line.

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u/sfz

was staring at this waiting for something to happen longer than I like to admit XD
u/lionleaf

Amazing. Love these interactive ones
u/iverjo

+1 for the physics :D
u/iverjo

mildly entertaining to play with
u/hamptonio

nice!
u/recursive

I learned something new! Destructuring assignment!
u/iverjo

#interactive
u/katkip

#physics

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tomxor

remix of d/19006 by u/tomxor

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𛐱𞱴🱰𛡭𨑰𚀨𦱁𛁂𧐬𪐩🐾𬀽𬀮𫑡𬀨𚁛𨐬𨡝𛁪𚐽🠨𦀽𠐭𨐬𦐽𠠭𨠬𬠽𦀪𦀫𦐪𦐬𬠯👲𛰶𛐹𝠬𪠭𪐼𜰦𪠾𪐿𦱡𚱘𛱲𛁢𚱙𛱲𛁸𛡭𫱶𩑔𫰨𠐬𠠩𛁸𛡬𪑮𩑔𫰨𨐬𨠩𧐺𦱡𛁢𧐩𚐩𞡰👛𧐻𬁛𭀪𜰦𜰱𧐽𦰹𞐫𤰨𭀩𚠴𞀬𞀰𚱃𚁴𛰳𚐪𝀸𧐻𮀮𬱴𬡯𪱥𚀩`.replace(/u../g,'')))

Jun 2 2020 1:36 AM UTC

}// 140/140

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#zhezhi #origami #physics

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u/tomxor

#waitforit ...
u/tomxor

Thanks u/nburn42 for suggesting lines
u/tomxor

Fold your own: ;onmousemove=e=>p[t*3&31]=[e.x/2,e.y/2];
u/ntsutae

Awesome
u/nburn42

Love it
u/KilledByAPixel

Amazing, hey tomxor, I'd like to get you involved in a project I'm working on, how can I contact you?
u/katkip

amazing
u/username

fucking sick
u/aleamb

WOW!
u/magna

WHAT
u/katkip

#witchcraft
u/rafroller

AMAZING <3
u/donbright

!!!!!!!!!!!!!!!
u/vain

Incredible! It lives... But i'm lost for words

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chunnoo

function u(t) {

c.width=1920;for(i=-2;i<2;i+=.05)for(j=-4;j<4;j+=.05)1/(j*j+i*i)+1/((j-t%12+6)*(j-t%12+6)+i*i)>1?x.fillRect(j*240+960,i*240+540,12,12):0;

Apr 28 2016 1:35 PM UTC

}// 137/140

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u/Froff

This is probably my favorite of all the dweets on here
u/hamptonio

Very original, nice job.
u/FireFly

Sweet, metaballs!
u/iverjo

#metaballs
u/katkip

#cell
u/katkip

#physics

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tomxor

remix of d/19547 by u/tomxor

function u(t) {

for(c.width=w=127,i=8e3;i--;t?p&T[r=t&2?i-w-r%3:i+w+r%3]<1&&--T[i]&++T[r]:T[i]=r%3)p=T[i],x.fillRect(X=i&w,Y=i>>7,1,p/3),r=i*t^Y/6&X/6

Jul 29 2020 11:41 AM UTC

}// 134/140

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#Serpinski #Hourglass v2

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u/tomxor

Removed the pseudo random left bias and made 1 bit, more sandy :)
u/tomxor

#sand #electric
u/magna

This is epic.
u/KilledByAPixel

amazing!
u/13thptr

incredible
u/13thptr

incredible
u/DataMeta

phenomenal #physics
u/Xen

lovejit
u/tomxor

Thanks u/KilledByAPixel for the original idea and implementation!
u/IV

ooh, you do the best stuff!
u/andrea270872

Wow!
u/donbright

these are incredible
u/joeytwiddle

Impossible! 🤩
u/vain

cool

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tomxor

remix of d/25759 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𠐽𠠽𥐽𥠽𜀻𪐭𛐻𥀽𤰨𜠪𭀫𜠪𣑡𭁨𛡡𭁡𫠲𚁃𚁘𛰸𚐬𤰨𭀫𦐯𞀩𚐩🠰𚑸𛡦𪑬𫁒𩑣𭀨𦀽𪐥𭰬𦐽𪐯𭰬𜐬𥁼𤠼𜀩𛁡👘𛑁𛁢👙𛑂𛁒👡𚡡𚱢𚡢𛐲𝐬𥀦𤠼𜐦𙠨𥐭👡𛁖𛐽𨠩𞱁𚰽𥐯𝀸𚱷𛁁𙐽𭰬𠠫👖𛰲𝀫𭰬𠠥👷𛁖𚰽𞀭𥠯𞀻`.replace(/u../g,'')))

Oct 10 2022 2:14 PM UTC

}// 140/140

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Infinite Falling Marble #Physics

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u/tomxor

This sh**'s chess, it ain't checkers
u/magna

Crazy!
u/vain

Holy sh*t... 😮 that's incredibly impressive! 👍 Really enjoying watching it. Great work!
u/lonestar108

blows my mind every time
u/neimad

wizardry
u/mrperson59

Delete the last 4 chars in the compressed string and watch the ball wobble around like mad
u/tomxor

Yeah -V/8 is for velocity damping on Y. Which is necessary with velocity based collision resolution. An alternative that doesn't require this is verlet integration, but that requires far more characters.
u/Qwitter

Cool
u/nix

r u effin kiddin me?

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mildlybean

function u(t) {

for(i=a=c.width|=0;i--;x.fillRect(i,i^X?F(i):Y,9,15))t?F=f=>S(f/99+t)*66+999:X=Y=v=b=0;Y+=++v;if(Y>F(X=(X+a+b)%a))Y=F(X),v=-v,b+=C(X/99+t)*9

Sep 7 2019 6:56 PM UTC

}// 140/140

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Gravity on a curved, moving surface

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u/KilledByAPixel

👍
u/atgz

very impressive
u/metamero

nice!! #gravity #physics
u/0x04

Nice to see that you cracked the 140 char mark! 👌
u/joeytwiddle

Like a roulette simulator! Can you guess where it will stop?
u/katkip

I consider this a life form
u/iverjo

Impressive for a dweet!

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jylikangas

function u(t) {

for(c.width|=t%=i=6;i--;(A=a=>x.beginPath(x.fill(x.arc(i*365+(k?T=t%1:t>i)*200,700-S(1/T)*5,85,a,a+3))))(a=k*t*3.2+i-t/6),A(a+3.14))k=~~t==i

Nov 14 2018 9:27 PM UTC

}// 140/140

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Rolling physics

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u/joeytwiddle

Great effect
u/sigveseb

The camera shake is pretty sweet
u/iverjo

You keep impressing me
u/DataMeta

Quite clever
u/statenlogic

+1 for usingd an optical illusion for some of the movement
u/13thptr

#physics #bounce

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pavel

remix of d/23821 by u/pavel

function u(t) {

for(c.width=w=127,i=n=9087;i--;u[i]=420*t>n-i?p&u[r=i+w+i*t%3|0]<1?u[r]++:p:(X-Y/2-30*t-w&Y)<1)x.fillRect(X=i&w,Y=i>>7,.7,p=u[i])

Sep 10 2021 9:36 PM UTC

}// 129/140

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Mr Sierpiński, I don't feel so good

u/Joachim

#sierpinski #particles #physics
u/tomxor

interesting idea (transitioning between imovable and movable).
u/Toby

Very original!
u/rep_movsd

Entropy :(
u/donbright

bravo

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jellyedwards

remix of d/17854 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`󤬽󤼨󭌩󚬪󜬪󜼵󜌊󨼮󭽩󩍴󪍼󟝺󟜲󝜊󩬽󚍘󛍚󚜽󟭸󛭦󪝬󫍒󩝣󭌨󦌪󮬫󦬪󞜬󦬪󮬫󣝡󭍨󛭥󮍰󚌭󚌨󦌭󜼲󚜪󚬲󚼨󦬭󜜶󚜪󚬲󚜯󮬩󚭒󛌳󛌳󚜊󩭯󬬨󪼽󝍥󜼻󪼭󛜻󮌮󩭩󫍬󤭥󨽴󚌹󝜳󛝃󚍫󚜪󮬬󝌱󜌫󤬬󜬬󤼨󪼩󚭺󚜩󩬨󪼯󝬴󛍫󙜳󜬩`.replace(/u../g,'')))

Jun 28 2021 11:54 PM UTC

}// 126/140

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curvature of space#time

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