It's just a curve without inflection.

In the 10th century, little squiggles were used just to indicate the general shape of the tune.

We are bending the curve.

We're bending the curve.

Bend, stretch, bend, stretch.

Curvature

Bend...

Whereas nature tends to be small, and curved, and it bends and twists, and has legs instead, and appendages, and has many muscles and many, many sensors.

When you drive up to Petrópolis, the road winds quite a bit.

Chongqing is a hilly city with winding streets.

Winding Road

Bend, tretch.

Bend, stretch.

Bend, stretch...

Bend them.

Einstein predicted that the Sun's gravity would bend light.

So he wants fine motor control flex at the wrist, flex at the elbow, abduct and flex at the shoulder.

Bend

River Suzhou is Shanghai's mother river twisting and turning, it stretches across and flows through the city center.

As I wandered along the crooked streets, there wasn't a soul to be seen.

What do we mean to talk about a straight line on a curved surface?

And I have the wrist flexion and extension.

3x3x3 Untwist 2 Corners

And as it moves, it takes pieces of the earth with it. It bends up.

The center of the osculating circle to a curve

Touch your toes, bend, stretch.

Center of Curvature of This Curve

And that bicycle cable can open or close a hand or a hook or bend an elbow.

curve

Squiggly

Curve

Curved

Curve Mode

Curves?

Center of Curvature of This Conic

Center of Curvature of This Cubic Curve

Here is a live patient. You can see it following the flexible curves around.

The line tangent to a curve

A curve's a curve, a plane's a plane, and the two won't mix.

A hyperbola constructed by its focuses and a point that pertains to it

CCurve

Hyperbola

They created a ruler that bends, what we would call these days a tape measure a flexible rule, a rule that bends.

Evolute of a curve

Tangent to This Curve