From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,5b528da331e8df66 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit X-Received: by 10.180.106.73 with SMTP id gs9mr1261932wib.2.1365342562143; Sun, 07 Apr 2013 06:49:22 -0700 (PDT) Path: ex12ni28539wid.1!nntp.google.com!feeder1.cambriumusenet.nl!82.197.223.103.MISMATCH!feeder3.cambriumusenet.nl!feed.tweaknews.nl!193.141.40.65.MISMATCH!npeer.de.kpn-eurorings.net!npeer-ng0.de.kpn-eurorings.net!news.n-ix.net!news.hufnagl.info!fu-berlin.de!feeder.erje.net!eu.feeder.erje.net!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!gegeweb.org!aioe.org!.POSTED!not-for-mail From: "John B. Matthews" Newsgroups: comp.lang.ada Subject: Re: Marble Clock Date: Tue, 02 Apr 2013 08:02:45 -0400 Organization: The Wasteland Message-ID: References: <7075541f-01b7-4cd4-997f-b0b8048f067d@googlegroups.com> NNTP-Posting-Host: LQJtZWzu+iKlBROuDg+IUg.user.speranza.aioe.org Mime-Version: 1.0 X-Complaints-To: abuse@aioe.org User-Agent: MT-NewsWatcher/3.5.3b3 (Intel Mac OS X) X-Notice: Filtered by postfilter v. 0.8.2 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Date: 2013-04-02T08:02:45-04:00 List-Id: In article <7075541f-01b7-4cd4-997f-b0b8048f067d@googlegroups.com>, gattamaneni abhiram wrote: > A marble clock is a clock that indicates the current time in a > 24-hour day using marbles to represent portions of the hour and > day. There are many different kinds of marble clocks, > distinguished by variations in the way the marbles represent > portions of the day. Our marble clock consists of five shallow > "trays" arranged one above the other. The bottom tray (the fifth > tray) serves as a marble "reservoir." Every minute, a winding > mechanism picks up one marble from the bottom tray, carries it to > the top of the clock and drops it into the top tray of the clock. > As a tray fills up, marbles fall through to lower level trays, as > described below. The current state of the marbles in the upper > four trays tells the current time. For reference, an elapsed-time video of a three-tier version is seen here: -- John B. Matthews trashgod at gmail dot com