Horizontal spacing

Vertical spacing

Circle radius

Vertical Radius

Horizontal Radius

Horizontal Radius

Vertical Radius

Horizontal Differencing

dabs per actual radius

Let me draw the ellipse first.

2 squared is equal to 4.

This is your radius in the x direction squared.

You go there, roughly.

Deform Radius

Experiment brush

Deform brush

3 squared is equal to 9.

So what is your radius in the x direction?

And of course this point right here this will be a, so this would be the point minus a comma 0.

What's our radius?

So this distance right here is going to be 5, and so will this distance.

Where r is the radius of the sphere.

A little bit fatter than it is tall, and that's because your x radius is larger than your y radius.

And now in the x direction, this is the x term, my x radius is 3.

The way we quantify structure for elliptical galaxies, is through surface photometry.

Change Horizontal Alignment

Change Vertical Alignment

And then the center of our ellipse is at minus 3 and positive 1, so that's the center.

I mean, it could, you can't have a negative radius, or if you did you're just going in the other direction, but it's the same thing.

So you learn that work is really the magnitude, let me write this down, the magnitude of the force, in the direction, or the component of the force in the direction of displacement.

Let's say I have a path in the xy plane that's essentially the unit circle.

You could say d work, or a differential of work.

Draw some axes, so that could be your x axis, your y axis.

So tangent of alpha is equal to L over r.

Radius

Radius

radius

Radius

So it's essentially two radii.

Hole radius

So times the cosine of the angle.

The vertical axis is actually the major radius or the semi major axis is 3, because that's the longer one.

Radius 1

Radius 2

Minor radius