HELP! What is the name of a pattern...

[tirediron]

which repeats inside itself in ever-decreasing size; for instance a series of concentric circles? I know there's a particular name, but my Google-fu is weak and my brain weaker...

 

[JustJazzie]

Droste effect?

Droste effect - Wikipedia

 

[otherprof]

which repeats inside itself in ever-decreasing size; for instance a series of concentric circles? I know there's a particular name, but my Google-fu is weak and my brain weaker...

Could you be thinking of fractals?

 

[tirediron]

Droste effect?

Droste effect - Wikipedia

Nope, 'though that's along the lines. It's a word which applies strictly to patterns

 

[JustJazzie]

In my kiddos kindergarten curriculum we just call them “radiating patterns” I’d be curious to know another name for them!

But I suppose those go outward, not inward.

 

[tirediron]

which repeats inside itself in ever-decreasing size; for instance a series of concentric circles? I know there's a particular name, but my Google-fu is weak and my brain weaker...

Could you be thinking of fractals?

Nope, they're random in appearance.

 

[JustJazzie]

which repeats inside itself in ever-decreasing size; for instance a series of concentric circles? I know there's a particular name, but my Google-fu is weak and my brain weaker...

Could you be thinking of fractals?

Nope, they're random in appearance.

Wait- Fractals are random? Or the one you are thinking of is random?

 

[espresso2x]

Apollonian ?

 

[480sparky]

Moiré?

Newtonian rings?

 

[tirediron]

Wait- Fractals are random? Or the one you are thinking of is random?

Mathematically, they're not random, but they often appear random; what I'm looking for is a distinct pattern repeated within itself until it disappears into infinity.

 

[tirediron]

Apollonian ?

That works-ish...

 

[Designer]

Like this?

Infinity mirror - Wikipedia

 

[Derrel]

Are you thinking of Fresnel, like the rings in a lighthouse's Fresnel glass, or the Fresnel pattern inside of viewfinder screens?

The Million Dollar Lens: The Science and History behind the Fresnel Lighthouse Lens - CADENAS PARTsolutions

 

[480sparky]

Bernoulli Spiral?

Logarithmic spiral?

Growth spiral?

Equiangular spiral?

Mandelbrot Set?

 

[compur]

Coaxial?