September/October 2018 issue of acmqueue The September/October issue of acmqueue is out now

Subscribers and ACM Professional members login here

  Download PDF version of this article PDF

Error 526 Ray ID: 47bd22e03b880ec7 • 2018-11-18 20:20:10 UTC

Invalid SSL certificate








What happened?

The origin web server does not have a valid SSL certificate.

What can I do?

If you're a visitor of this website:

Please try again in a few minutes.

If you're the owner of this website:

The SSL certificate presented by the server did not pass validation. This could indicate an expired SSL certificate or a certificate that does not include the requested domain name. Please contact your hosting provider to ensure that an up-to-date and valid SSL certificate issued by a Certificate Authority is configured for this domain name on the origin server. Additional troubleshooting information here.


Originally published in Queue vol. 8, no. 9
see this item in the ACM Digital Library



(newest first)

george gonzalez | Fri, 18 May 2018 15:14:43 UTC

A Los Alamos I think they used a predecessor of the IBM 603 electronic multiplier, fixed-point, six digits. They certainly had to put in large scale factors when dealing with simulated atoms and photons!

Stan Kelly-Bootle | Thu, 30 Sep 2010 02:02:03 UTC

Gene: "Philately will get you everywhere" (Stanley Gibbons). Thanks for your percipient comments! I'll chase you URL soonest. Stan PS: I know PC (q.g.) is only a 2-LA, but it's attracted a wide semantic spectrum.

Gene Chase | Sat, 25 Sep 2010 16:06:32 UTC

Re TLA's: My contribution to "ASP" at Wikipedia was excised, although I don't know by whom ... er ... by who, probably (>0) by someone who didn't care about history. All of these are from CS: Attached Support Processor, ATM Switch Processor, Analog Signal Processor, Appletalk Session Protocol, and the lone Microsoftesque survivor, Active Server Pages.

Still appreciating your insights ... and your outsights (the latter defined, q.g., at )! Despite physical problems, your mind is still sharp.

Leave this field empty

Post a Comment:

© 2018 ACM, Inc. All Rights Reserved.