Parabola by Directrix Focus

A parabola defined by its directrix and focus

Conic by Directrix, Focus Point

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

Hyperbola by Focuses Point

Select the first focus of the new hyperbola...

Select the second focus of the new hyperbola...

A conic with given directrix and focus, through a point

Construct a hyperbola with this focus

Construct a parabola with this focus

Construct a conic with this point as focus

And a couple of years after that, they'll be able to see in ultraviolet, they'll be able to see in infrared, they'll be able to focus their eyes, they'll be able to come into a microfocus.

J

A burned sedan. Body, charred beyond identification.

Focal

Focal Length

Focal length

Focal Length

Caustics

Focus

Focal length

It's this non tracking collector with these six tuba like horns, and each of them collect light in the following way if the sunlight strikes right here, it might bounce right to the center, the hot spot, directly, but if the sun is off axis and comes from the side, it might hit two places and take two bounces.

So, he had to focus each tube just to get the memory up and running, let alone having, you know, software problems.

Pyrochlore

Refocus

Focal point

Focus

First Focus

Second Focus

Focus

No Focus

Anxiety

Industry total

South Lebanon, the only active front in the Middle East, has become a focus of increasing attention and requires closer monitoring than ever before.

Focus Blur

High Anxiety

Focal blur

Focus Decoration

Delay focus by

Eyepiece focal length

Focus Terminal

Focus Policy

I was worried.

Oh, no. Not too close.

The construction of kilns for making coke with indigenous methods shall be forbidden, and the existing kilns for making coke with indigenous methods shall be renovated within a time limit.