Archive for the ‘Science’ Category

h1

20.6 SQ Episode 032 – Optical Illusions

November 6, 2011

Podcast Feed

Optical (visual) illusions come when your brain interprets something you see that you actually don’t see.

Optical Illusions come in many forms

Line (& Shape) Illusions

Lines appear bulged or squished depending on lines around it.

Op-Art Quilts book on Amazon

Op Art on Wikipedia

This looks like the op art quilts in the book but is not exactly:

Orchid Kaleidoscope

Image from flickr by andy02124 (creative commons)

The Cafe Wall Illusion

Image from Wikipedia

Herring Illusion

Image from wikipedia

Herring Illusion variation

There are squares set on point that have concentric circles that make the squares seem squished

The Bulging Checkerboard (see below)

Kaleidoscope quilt variations (this one does not show circles, but is Kaleidoscope quilt

kaleidoscope Quilt

Image from flickr by heidielliot(creative commons)

Storm at Sea

Storm At Sea

Image from flickr by The Last Cookie

Dimensional Illusions

Due to colors/ value lines, two dimensional objects appear in three dimensions

2D –> 3D

Vasarely Budapest Déli pályaudvar

Tumbling block and varations

Shadow box quilt

Movement Illusions

Due to highly dense & colored designs, the designs appear to move on you.

Revolving CirclesImage from Wikipedia

A dizzying optical illusion quilt that you won’t be disappointed to see, but watch, made me dizzy to look at.

Rotating Snake Illusion (very moving, if you’re epileptic, be aware before clicking)

Fraser Spiral

Image from wikipedia

Actually moving illusion that induces an interesting afterimage effect (don’t go if epileptic)

Illusion of Inclusion

Your brain completes the picture, it finishes things up that are not there.

Kansia Triangle

Image from wikipedia

Ambiguous Objects

Duck and Rabbit

Two Faces & Vase

Image from wikipedia

Robbing Peter to Pay Paul

1997 Robbing Peter to pay Paul

Image from flickr by PeggyinMaine

Paradoxical Drawings

These objects are impossible … very impossible.

Penrose Triangle

Image from Wikipedia

MC Escher stairs

Penrose stairs

This hilarious video of these penrose stairs. Video is called Hallucii.  You’ll see why when you click.

Secondary Patterns

Patterns come up that are not expected – from very simple blocks

The Neutral Stars Block

The simple three strip block that doesn’t look like much on its own.

More about the Bulging Checkerboard

Jane’s wonderful optical illusion quilt has stuck in my mind over the last year, when I would see it on her blog, I remember thinking, wow, what a quilt.

She has graciously agreed to let me share pictures of it with you.

Jane has named her quilt False Impressions, the website of this effect is called bulging checkerboard.

The effect is simply amazing, but the execution of it looks like squares on larger squares.  The hardest part would appear to be keeping everything separate and in line.

Here is a detail shot.  It would be easy to do with big enough blocks, the effect is much greater when standing back.

Do you see why it’s a bulging checkerboard?

Jane has discussed this quilt in several different posts, and in the latest post has talked even more about optical illusions for quilt ideas.

Wow, this quilt, I would be really proud of Jane.

Jane calls herself a quilter geek, and this is a great example of this.

Other Optical Quilts

3D Tetris Quilt by Quilter Geek

My Tumbling Block Table Runner

My Opic by Ruthann from Mirkwood Designs (link from SeamedUp, tell me if it’s broken)

Who is known as the Optical Illusion Quilter?

Karen Combs (facebook page)

Optical Illusion Quilts on amazon

Optical Illusion quilts at the Online Quilt Museum

Further Links

Links to the Wikipedia site on Optical Illusions & Geometrical Optical Illusions.

Whole site of Illusions at Visual Phenomena & Optical Illusions

I did not discuss color constancy, which is a whole other ball of wax that tricks your brain into thinking about the colors based on the other colors around it.

Additional music

Mevios Music Alley: Get Myself Together by The Tones

h1

20.4 Periodic Spiral Progress

October 9, 2011

The days are blurring by faster & faster every day now!

I really have to say I love football season for many reasons, one of which is that it’s one time I actually sit down & do some handwork of some kind.

So I’ve been working a little bit on my periodic spiral quilt in between football plays.

I will post some progress pictures here, some of which you’ve seen, some you haven’t.

I have 1 whole section to sew together yet, and one section that is still in rows.

Progress as of today Oct 9th, 2011:

The green section is still in rows, I have to admit sewing the rows to each other is my least favorite part.

Actually all the major colored sections are not sewn to each other either, it’s easier to transport when the thing is still in larger pieces.

This is still a pretty small quilt.  The size of the grey fabric you see in the picture is the size of a television tray, so this is going on the front of my studio door when completed.

The grey fabric will be cut down to ‘mock’ the shape of the spiral & the whole thing will rest on some black/blue hexagon batik fabric purchased in February.

Also, was considering writing the symbols on the quilt in silver pen, and this I may not do now – have not decided for or against it yet.

Here’s some (reverse) progress as I’ve gone along with this quilt.

A few days ago – Oct 5th:

September 10th:

August 21st:

July 20th:

July 14th:

June 26th:

March 17th:

DESIGN (sometime this year or end of last year <Dec2010-Jan2011>):

 

h1

19.8 Flying around the earth

September 19, 2011

A long time ago in a college far far away, I wanted to work with NASA due to my love of space.

The planetarium job now long behind me, I don’t keep up on which planets are out when, and I do love looking up on a clear cloudless night.

I am comforted on my ride to work (every day in the dark, mind you) of the stars above me and the wonders of the universe, although I rarely get too deep into it anymore.

I am used to looking up, but what if I could look down?  From the ISS (international space station)?  I saw on Bad Astronomy today a link to this you tube video.

Those of you space-afiles like me, or just anyone who appreciates something beautiful, I am embedding the video onto my site today.

 

I love seeing all the lights from all the cities & towns!  And you can see the lightning from up above.

Breathtaking!

h1

19.0 Rachel’s Genome Quilt

August 27, 2011

You gotta take a look at this quilt.

Longtime podcast listeners / blog readers may know that once upon a time I was inspired by Beverly St Clair to create a genome quilt.  Well, I have this very elaborate simple looking quilt idea that never went anywhere, but a pattern & an idea. It’s coming (probably), but I don’t have a gene to start with yet.

But this got me into contact with Rachel.  Rachel is a PhD student in Melbourne Australia & she sews fantastic clothes, and also quilts, which she blogs about both these passions at My Messings blog.

I have loved watching Rachel’s sewing come along over the years, but nothing as spectacular of a project as THIS – Rachel’s Genome Quilt!

Rachel’s quilt is filled with A’s, C’s, G’s & T’s, in code.  Each turn of the half square triangle represents a specific base.

The gene used in question: mouse integrin beta3

I love the subtle gradation of the aqua colors through the quilt, which really gives this quilt a lot of interest.

To the random observer, this quilt appears to be a random draw of half square triangles, but I’ve seen pictures of the blocks being sewn down, Rachel’s diagram of her final quilt done in sections, and now we get to see the finished piece.

A lot of preparation, planning, and persistence prevails here with this quilt.

Rachel takes the time to link back to all her past journey of the making of the quilt in her final blog post, so you should go over there and take a look at this quilt!

The back is pretty great too. (reminds me of electron orbital shells actually)

But the one thing that needs to be finished in order to tie all this meaning with all this beauty – a label.  So, I’m guessing that’s the next stage of the quilt.

It looks great, so go and take a look at what my blogging friend has done!

Well done Rachel!

h1

17.2 Tribbles and Hand Sewing

July 14, 2011

Well, today is actually a good day for me to sit at my computer at length, and I haven’t wanted to keel over due to the heat.

Working on getting the AC fixed, or at least watching while it is, and there were days earlier this week it was 93 inside.  At 2:30 AM.  At my computer.

This has put a major dampening on my computer activities (although not exactly computer silent either).

And the enthusiasm I had built up on sunday just prior to all this chaos has sorta slipped away.

Had a great time at the quilt show, and will share it with you audibly with you soon!

In the mean time, lots more hand sewing while I sit in a 10 X10 (or so) room watching TV and some of the Harry Potter movies.

I’m up to HP4 rewatched now, and yes, the premiere is tomorrow (tonight), but I have tickets for Monday afternoon, so I have time to watch the remaining 3 movies beforehand.

Anyway … (see how I’ve missed you, rambling already)

Here are the tribbles I’ve been working on.  They even did me the honor of lining up for me.

And what do you know, 12 more decided to show up on the table after this picture was taken.  I told you they multiply!

Actually, this picture doesn’t look too far off of what the periodic table actually is … which is a good thing.

I have lots and lots of tribble seeds still thanks to Pam and several members of my wonderful guild!  They’re so addicting to do that a few more tribble skeletons (not sure if they have skeletons?) also followed me home yesterday, to the size of 3/4 and 1 inch.  (These are 1/2 inch along each hexie side).

h1

16.3 More Scientific Hexies from Becky’s Blabber

June 10, 2011

I don’t know how I missed this blog before, but here is a girl after my own heart.

Since we can’t go more than 3.6 hours without hearing/reading the word ‘hexie’ in the quilting world lately (and this includes myself), I thought I’d share some hexie science love that I found on Becky’s Blabber blog.

 

And what are these hexie’s doing?  Becoming molecules!

Well, hexies and penties … but penties are hard to say because they’re so uncommon.

Good job Becky on your first hexie!

 

And this apparently has lead to a lot of hexagon / molecule love for Becky!

And some more in progress blog love can be found here, and here.

 

 

h1

16.2 Periodic Table of Sewing by Scientific Seamstress

June 9, 2011

I totally failed to mention this wonderful periodic table of sewing in my periodic table episode a couple of days ago.

Carla of the the Scientific Seamstress fame (must be something weird about people with the names rhyming with ‘arla’?) has put together the periodic table of sewing elements.

Keeping the symbols of the elements the same, Carla has found some cute replacements for elements!

I particularly like Ne (neon) for Needle, and Sr (strontium) for Seam Ripper, and Mg (magnesium) for Magnetic Closure.

Check out her science/sewing lab on this post where there’s a link to a larger printable version of the image!