Atomic clock Updated +Created
Video 1.
How an atomic clock works, and its use in the global positioning system (GPS) by EngineerGuy (2012)
Source. Shows how conceptually an atomic clock is based on a feedback loop of two hyperfine structure states of caesium atoms (non-radioactive caesium-133 as clarified by the Wikipedia page). Like a quartz clock, it also relies on the piezoelectricity of quartz, but unlike the quartz clock, the quartz is not shaped like a tuning fork, and has a much larger resonating frequency of about 7 MHz. The feedback is completed by producing photons that resonate at the right frequency to excite the caesium.
Video 2.
Inside the HP 5061A Cesium Clock by CuriousMarc (2020)
Source.
A similar model was used in the Hafele-Keating experiment to test special relativity on two planes flying in opposite directions. Miniaturization was key.
Contains a disposable tube with 6g of Caesium. You boil it, so when it runs out, you change the tube, 40k USD. Their tube is made by Agilent Technologies, so a replacement since that opened in 1999, and the original machine is from the 60s.
Detection is done with an electron multiplier.
youtu.be/eOti3kKWX-c?t=1166 They compare it with their 100 dollar GPS disciplined oscillator, since GPS satellites have atomic clocks in them.
Video 3.
Quick presentation of the atomic clock at the National Physical Laboratory (2010)
Source. Their super accurate setup first does laser cooling on the caesium atoms.
Tape drive Updated +Created
One of the most enduring forms of storage! Started in the 1950s, but still used in the 2020s as the cheapest (and slowest access) archival method. Robot arms are needed to load and read them nowadays.
Video 1.
Web camera mounted insite an IBM TS4500 tape library by lkaptoor (2020)
Source. Footage dated 2018.
Computer keyboard model Updated +Created
Cyrus the Great Day Updated +Created
Gospel of John Updated +Created
Work log Updated +Created
Scrapped justdropped data, patched:
+++ b/cia-2010-covert-communication-websites/cdx-post.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 # Post process the output of cdx.sh to enrich IDs even further, and reconstruct easier to Web Archive inspect domain names.
-grep -P -e '([^,)]+)\)\/\1\.swf|\)/[^/]+.jar|([^,)]+),([^,)]+),([^,)]+)\)/cgi-bin/[^/]+\.cgi' "$1" |
-  sed -r 's/\).*//' | awk -F, '{ printf("%s.%s\n", $2, $1) }' | uniq -c | awk '$1 == 1{ print $2 }' | tee $1.post
+grep -P -e '([^,)]+)\)\/\1\.swf|\)/[^/]+.jar|([^,)]+),([^,)]+),([^,)]+)\)/cgi-bin/[^/]+\.cgi' "$1"|
+  sed -r 's/\).*//' | awk -F, '{ printf("%s.%s\n", $2, $1) }' | uniq -c | awk '{ print $2 }' | tee $1.post
and then:
./hupo-cdx-tor.sh out 'news|headline|internationali|mondo|mundo|mondi|iran|today' 2006 2022
web.archive.org/web/20110203041325/http://financecentraltoday.com/
web.archive.org/web/20110202221328/http://thenewsofpakistan.com/
web.archive.org/web/20050424123432/http://www.pokernewsweb.com/ likely legit in the intended emulated style
web.archive.org/web/20101226225311/http://world-news-online.net/ domainsbyproxy.com registered 2006-06-14T21
web.archive.org/web/20100923090646/http://mideasttoday.net/
web.archive.org/web/20110209045123/http://dryterrainnews.com/
web.archive.org/web/20100206221718/http://euronewsonline.net/
web.archive.org/web/20110208063146/http://news-and-sports.com/ Hit.
  • viewdns.info/iphistory/?domain=news-and-sports.com says:
    • 204.11.56.25 British Virgin Islands CONFLUENCE-NETWORK-INC 2014-07-05
    • 208.91.197.19 British Virgin Islands CONFLUENCE-NETWORK-INC 2013-05-20
    • 66.104.175.42 United States XO-AS15 2012-06-29 In range.
web.archive.org/web/20110202054628/http://intoworldnews.com/ hit.
  • viewdns.info/iphistory/?domain=intoworldnews.com says:
    • 208.91.197.19 British Virgin Islands CONFLUENCE-NETWORK-INC 2013-05-20
    • 208.91.197.132 British Virgin Islands CONFLUENCE-NETWORK-INC 2013-04-21
    • 219.90.61.118 Taiwan UUNET 2013-03-0219.90.61.118
  • securitytrails:
    • 219.90.61.118 Verizon Business 2010-12-11 (14 years) 2011-07-13 (14 years) 7 months
    • 205.178.189.129 Network Solutions, LLC 2010-03-10 (15 years) 2010-03-29 (15 years) 19 days
web.archive.org/web/20110207171340/http://mydailynewsreport.com/ hit
web.archive.org/web/20050508220858/http://www.asianewsupdate.com/ this looks like the exact format of legitimate site the CIA was emulating. Copyright 2005, a CGI link to as: www.asianewsupdate.com:80/cgi-sys/FormMail.cgi There's a phone there 01 647-0910 so seems less likely?
2010. JAR unarchived. rss, split image
  • viewdns.info/iphistory/?domain=newsdelivered.net says:
    • 192.96.218.41 United States 123NET 2013-06-10
    • 196.40.84.210 Costa Rica RADIOGRAFICA COSTARRICENSE 2013-05-20
    • 50.63.202.40 United States AS-26496-GO-DADDY-COM-LLC 2013-04-08
    • 74.220.207.158 United States UNIFIEDLAYER-AS-1 2013-03-11. viewdns.info/reverseip/?host=74.220.207.158&t=1 says large virtual.
  • securitytrails:
    • 192.96.218.41 123.Net, Inc. 2013-05-29 (12 years) 2013-06-02 (12 years) 4 days
    • 196.40.84.210 RADIOGRAFICA COSTARRICENSE 2013-05-21 (12 years) 2013-05-27 (12 years) 6 days
    • 74.220.207.158 Unified Layer 2008-09-01 (17 years) 2009-02-26 (16 years) 6 months
2010. JAR. Split header.
2011. JAR unarchived. Split header.
2011. JAR. a.newslink, a.newslinkalt.
2011. Arabic. RSS.
web.archive.org/web/20110129115400/http://kmirano.com/ shallow but off style? Has a kmirano.sfw... viewdns.info/iphistory/?domain=kmirano.com says 211.1.224.71 Japan NTT SmartConnect Corporation 2012-01-11
2011. JAR. Copyright 2008. Split header and other images. They are obsessed about CDMA (2G).
2011. JAR. split header, RSS.
2010. Suspicious. But no clear fingrenprint. Also not as shallow as others. Also Joomla based which would be novel.
  • viewdns.info/iphistory/?domain=eqranews.com says:
  • securitytrails.com/domain/eqranews.com/history/a says
    • 69.64.147.243 Amazon.com, Inc. 2011-04-28 (14 years) 2012-01-19 (13 years) 9 months
    • 67.228.81.180 SoftLayer Technologies Inc. 2011-04-18 (14 years) 2011-04-28 (14 years) 10 days
    • 174.37.172.68 SoftLayer Technologies Inc. 2011-04-13 (14 years) 2011-04-18 (14 years) 5 days
    • 67.228.81.180 SoftLayer Technologies Inc. 2011-03-19 (14 years) 2011-04-13 (14 years) 25 days
    • 74.220.215.62 Unified Layer 2010-03-18 (15 years) 2011-03-19 (14 years) 1 year
2010. JAR.
newspapergateway.com/ web.archive.org/web/20110208070309/http://newspapergateway.com/ hard to tell but generally off. Has both JAR and SWF.
2011 Farsi. JAR. RSS.
2010 JAR. Split header, rss.
2011. English. Split header, RSS.
sandstormnews.com 2011, SWF Arabic. ul.rss-items > li.rss-item, split header
zerosandonesnews.com 2011. SWF Split header, ul.rss-items > li.rss-item
differentviewtoday.com: web.archive.org/web/20110202185635/http://differentviewtoday.com/ split header images JAR archived at: web.archive.org/web/20110202185659/http://differentviewtoday.com/bwm.jar
lasthournews.com web.archive.org/web/20100513182623/http://lasthournews.com/. Urdu. JAR at: web.archive.org/web/20100513182724/http://lasthournews.com/recent.jar. Split header images.
mynepalnews.com, split header images, ul.rss-items > li.rss-item, Unarchived jar:
  • viewdns.info/iphistory/?domain=mynepalnews.com
    • 5.9.240.230 Falkenstein - Germany Hetzner Online GmbH 2014-01-31
    • 142.4.222.67 Canada OVH SAS 2013-12-20
    • 72.9.137.7 Nepal WorldLink Communications Pvt Ltd 2013-06-30. Big virtual.
    • 64.71.179.79 United States HURRICANE 2012-11-12. Nothing else on 64.71.179.71 - 64.71.179.89
  • securitytrails.com/domain/mynepalnews.com/history/a
    • 5.9.219.166 Hetzner Online GmbH 2013-12-31 (11 years) 2014-01-08 (11 years) 8 days
    • 142.4.222.67 OVH SAS 2013-12-02 (11 years) 2013-12-31 (11 years) 29 days
    • 72.9.137.7 WorldLink Communications Pvt Ltd 2013-01-24 (12 years) 2013-04-02 (12 years) 2 months
    • 64.71.179.79 Hurricane Electric LLC 2008-09-01 (17 years) 2008-10-21 (16 years) 2 months
History of science Updated +Created
If there is one thing that makes Ciro Santilli learn German, this is it (the Romance language are all the same, so reading them is basically covered for Ciro already).
Lighter Updated +Created
Roast chicken Updated +Created
2020-12: large-ish chicken, www.youtube.com/watch?v=bJeUb8ToRIw worked very well. Just that after 1 hour it was slightly uncooked in the middle, and 10 minutes later, the top skin burnt a little bit. So next time, use some aluminium foil.
Bicycle Updated +Created
Kitchen Updated +Created
30L tall pedal bin light blue. Liner type: "Tall Bin Liners 30 L".
Houses Updated +Created
Digital preservation Updated +Created
Ciro Santilli's biography Updated +Created
Maybe Ciro Santilli should do something useful and remarkable so that someone might actually want to read his biography in the first place. But hey, procrastination.
Ciro Santilli was born in Brazil in the small/medium city of Rio Claro, São Paulo (~200k people in 2020) in the State of São Paulo in 1989 AD.
The family then moved to Jundiaí in 1995, and then finally to Santos, São Paulo, Brazil in 1997.
In 2010, as mentioned atSection "Ciro Santilli's formal education", Ciro as admitted in a double degree program at the École Polytechnique, France, where he stayed until 2013. Going to France was a mind blowing, life changing event.
Ciro Santilli's projects Updated +Created
A summary of minor projects is given at: Ciro Santilli's minor projects.
This section is a dump for anything else, to keep those sacred first sections that show on the top of the homepage clean.
Organic chemistry Updated +Created
Chemical reaction Updated +Created
Abstract algebra Updated +Created
We just use "Abstract algebra" as a synonym for algebra.
Group Updated +Created
Video sharing website Updated +Created

There are unlisted articles, also show them or only show them.