Edge Rewrite
// HTMLRewriter · presentation

This page was redesigned at the edge.

Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.

// request.cf · coarse context

A page that knows where it met you.

Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.

Country
US
Cloudflare location
CMH
Connection
HTTP/2
Language
Not provided

Ray ID: a227195bddf64af4

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Talk:Strong focusing

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Latest comment: 18 years ago by Wolfkeeper

I think that this image has wrong filed lines...

http://upload.wikimedia.org/wikipedia/commons/e/ef/AGFocus1.gif

Looks OK to me. What do you think is the problem?- (User) WolfKeeper (Talk) 01:07, 18 July 2008 (UTC)Reply

Weak focusing

[edit]

In the introduction, I think the part about weak focusing, it should read: [...] the principle that nearby circles [...] only intersect TWICE per revolution. OR: [...] only ONCE per half-revolution.