We're already making the claim that the distance from here to here, let me draw that in another color.

So, the change in y between that guy and that guy is this distance, right here.

So it would be that distance plus that distance plus that distance plus that distance.

So that's the x axis, that's the y axis, then draw the circle itself, circle looks like close enough, and then the distance or the radius from the center of the circle, that's going to be 3.

These two focal lengths are symmetric.

We use a lot of laser range finders.

The maximum solar distance for drawing comets.

So instead of that, we multiply that with speed of light, converting it into a distance.

So if you multiply 30 times here and times thirty, this is the distance.

So it would be the distance around.

Large...and small.

If it's in meters per minute, then this is the distance in meters.

So we can make a very similar argument that we made in the ellipse situation.

So if this distance is the same as this distance, then the magenta distance minus this blue distance is going to be equal to this green distance.

light blue distance?

So one way to say this is, what are all of the x's that are less than 12 away from 0?

So 1 2 times 3 times 4.

Add each new pineconey thing a phi angle around, and make them a little farther out each time, which you can keep track of by marking the distance on your angle a tron.

I can't judge distance.

It's a square.

That's just this distance right here.

So this distance up here is 45vb.

Set here equivalent focal length assuming a 35mm film camera, in mm. A value of 0 means the focal length is unknown.

Distance

Distance exponent

At a distance of

Distance

How much distance could you accept in a long distance relationship?

So if we use a camera, I use a different model than if we use a range finder.

So on this axis on this axis I have distance so now say y is equal to distance.

Now, the next most interesting thing that you might be wondering about a circle is how far is it around the circle?

I have a triangle like this.

Not at this distance.

I'm wasted on crosscountry. We Dwarves are natural sprinters.

Well, the first thing you do is though I've never well, we could just figure out the focal length just by plugging into the formula.

They dance in circles to communicate a short distance, and shake their bodies and dart back and forth to indicate a longer distance.

So that's 15 fewer km.. And so the number of km that Beth ran would be this distance right over here.

Let's call this distance d1.

If he's on one of these roads... he's in for a short trip.

I've told you the latency is 7 milliseconds. That's a milli, not a nano.

So let's just leave that unlabeled right now.

What's this distance right here? d sub 1.

The distance of this point to the image plane up uppercase Z.

Now on this next day, she's 50 minutes late.

This is what we need to know.