My father died of a subarachnoid hemorrhage when I was fourteen.

Some of them are orb weaving spiders and some of them are non orb weaving spiders.

A cobweb.

I hate cobwebs.

Spiders like to build spiderwebs.

Just as light as a spider's web.

Gosh, our cobwebs are missing.

You know what happens when Cobwebs are not regularly swept away.

There are 10 million people in the U.S.

Here you have a retina.

And look, cobwebs everywhere!

It'll just bake your retinas.

Laws are like cobwebs, which may catch small flies, but let wasps and hornets break through.

This is opposition of a different sort. They weave it cleverly, lightly, like a cobweb.

Welcome, Colonel Grau, to the spider's web.

When you look at this orb web, you're actually seeing many types of silk fibers.

If it wasn't able to stretch so much, then basically when an insect hit the web, it would just trampoline right off of it.

Minor ampullate silk is used in web construction.

Let him brush away the Cobwebs for you and stay with me.

So there it is the retinas are baking.

And I normally rig it with the web of a money spider.

You can't help but actually ripping that spider web apart.

Put a cobweb on it. It's good against bleeding.

And in the back you can see a spider web pattern.

And then the transducer then makes the output cells send the code on up to the brain, and the result is a retinal prosthetic that can produce normal retinal output.

Pyriform silk glands make the attachment cement that's the silk that's used to adhere silk lines to a substrate.

The retina chip extracts four different kinds of information.

On the right side, my retina is perfectly symmetrical.

And the retina, of course, is a complex structure.

It's been hypothesized that orb weaving spiders, like this argiope here, should have the toughest dragline silks because they must intercept flying prey.

Learn how to program with ants and spider webs

You know spiderwebs? Sure, they are products of evolution.

So from the retina you go onto visual cortex.

But it's much more connected to the Web.

I was wondering about your eye.

And that spider web pattern corresponds to the local coordinates in the sky.

And the other thing is they're working on artificial retinas for the blind.

Here is a pest, devastating pest, a spider mite, because it does a lot of webbing like a spider.

The frame and radii of this web is made up of one type of silk, while the capture spiral is a composite of two different silks the filament and the sticky droplet.

The next time you see a spider web, please, pause and look a little closer.

So if the web was made entirely out of dragline silk, an insect is very likely to just bounce right off. But by having really, really stretchy capture spiral silk, the web is actually able to absorb the impact of that intercepted prey.

The retina chip that we designed sits behind this lens here.

So you have an image, a retina, and a brain.

We've just abstracted what the retina's doing with a set of equations.

We think that's because the dragline silk, which is used to make the frame and radii for a web, needs to be very strong.