It's a double helix.

You'll be familiar with the double helix of DNA.

This is DNA in its classic double helix form.

And you can see a little bit of double helix forming there.

There's a gyroscope in it.

Helix

The Spiral

Spiral

Spiral1

Spiral2

Complex number

Spiral number

Helix

Spiral

Squiral

Monkey wrench? Oh.

We want to look at individual strands and not think about the double helix.

Squiral

Toxic spirals

Helix 2

Helix 3

Helix 4

Handedness

Spiral Shape

Change spiral

A spiral shape

Curls on Green

Where's the propellers?

So in this picture you see that rotor four is spinning faster and rotor two is spinning slower.

Hexacopters and octocopters, with six and eight propellers, can provide redundancy, but quadrocopters are much more popular because they have the minimum number of fixed motor propeller pairs four.

So it has four rotors.

OK, so here, this is the book spiral.

Spiral In

Cockpit, propeller, engine.

Italy s Downward Spiral

A snail's shell is spiral in form.

If we unwind the double helix and unzip the two strands, you see these things that look like teeth.

You mix them together and they make a rigid double helix.

My spine curves spiral.

And then finally, if you spin opposite pairs of rotors faster than the other pair, then the robot yaws about the vertical axis.

Your monkey wrench, Mr. Newton.

It's double stranded, it's a double helix, has the As, Ts, Cs and Gs that pair to hold the strands together.

So there's a strand that goes like this, goes along one helix and binds it jumps to another helix and comes back.

The spiral thread we call a solo hot spot.

She carries a mean spiral notebook and a pen.