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General Discussion

16582 threads, 335383 comments (13 Viewing)
 

More on AI

06/11/2026 by Lehman57
"But while AI excels at delivering "quick-hit" information, it operates within a box: it aggregates and synthesizes what already exists--an echo chamb...
Views: 116, Comments: 4
Last comment 06/14/2026 by redfred
 

Statimeter M5537 for ISO pumps

06/02/2026 by Leyla Alizade
Hi! I have limited knowledge about this instrument, all information available to me is this picture, model # - M5537, that it is a Statimeter, it is...
Views: 96, Comments: 5
Last comment 06/03/2026 by Leyla Alizade
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Commercial Space

2180 threads, 4373 comments (2 Viewing)
 

RTJ Gasket Supplier in UAE

06/12/2026 by krelson002
Krelson is the largest RTJ Gasket Supplier in UAE, supplying high-performance sealing solutions designed for high-pressure and high-temperature indust...
Views: 2, Comments: 0
 

OLM to PST Converter Tool

06/11/2026 by annealisa
OLM to PST Converter Tool If you are looking for a professional solution to convert OLM files into PST format, PDS OLM to PST Converter Tool offers a...
Views: 0, Comments: 0
 

What Grades of Alloy Steel Tees are Most Commonly Manufactured?

06/09/2026 by Nehaa
Alloy steel tees are manufactured in several grades to meet the requirements of high-pressure, high-temperature, and corrosive service conditions. Amo...
Views: 8, Comments: 0
 

At What Point Does AI Rack Density Change the Construction Method?

06/09/2026 by gbcengineers
One thing I find interesting about AI data centers is that the construction method is no longer only about cost or speed. Rack density seems to be ch...
Views: 6, Comments: 0
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CR4 Feedback

731 threads, 12629 comments (0 Viewing)
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Section Blogs

Challenge Questions

459 blog entries, 31208 comments (0 Viewing)

Sensors and Senseless (June 2026 Challenge Question)

05/31/2026
Scenario You are the on-call engineer for a hydrogen compressor skid. The control system has five sensors arranged in a serial telemetry chain. Each...
Views: 196, Comments: 3
Last comment 06/01/2026 by StandardsGuy

Who Watches the Watchmen? (May 2026 Challenge Question)

04/30/2026
My watch is 1 second slow. Your watch is 1.5 seconds fast. We both agree to stand here until the show the same time again (12 hr clock) Question 1:...
Views: 567, Comments: 17
Last comment 05/29/2026 by fzitta
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The Engineer's Notebook

532 blog entries, 9024 comments (0 Viewing)

Wordrow Workload No. 1: Automotive

08/06/2025 by ThePuzzler
I - The Puzzler - am here to present to you, another mystifying puzzle that will tie your brain in knots and leave your logic in tatters! In this ridd...
Views: 154, Comments: 1
Last comment 08/07/2025 by Rixter

Science Sprint Quiz: Nuclear History

07/25/2025 by ThePuzzler
Some of the CR4 team is working on expanding content offerings to our humble little community. I - The Puzzler - present to you The Science Sprint qu...
Views: 128, Comments: 3
Last comment 07/31/2025 by Doorman
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Other Blog Entries of Interest

mkii Archer Automaton

11/09/2023 posted in Workbench Creations
by user-deleted-1105
I made a mki archer automaton out of wood a few years back, it was pretty good and it shot an arrow with a convincing action. The problem was, you had...
Views: 372, Comments: 13
Last comment 06/27/2025 by artsmith

Pesky Ellipse Circumference

10/04/2020 posted in Relativity and Cosmology
by Jorrie
When I first heard that there is no easy exact formula for the circumference of the standard ellipse, I found it hard to believe. I had already learne...
Views: 624, Comments: 8
Last comment 11/30/2020 by Haymaker

SpaceProperTime Diagrams and the Central Singularity

08/24/2020 posted in Relativity and Cosmology
by Jorrie
In my prior Blog post on the Einstein equivalence principle, I have not identified important values, like the mass of the black hole, real distances a...
Views: 359, Comments: 4
Last comment 08/25/2020 by Jorrie

SPT-Acceleration and the Equivalence Principle

08/17/2020 posted in Relativity and Cosmology
by Jorrie
One day after Alice's arrival at Deep-2, she and Dot sat down for the change of shift briefing - recall that Dot must soon return for Home leave. Whil...
Views: 233, Comments: 8
Last comment 08/18/2020 by Jorrie

Space-Propertime Structure and Acceleration II

08/11/2020 posted in Relativity and Cosmology
by Jorrie
This is a fanciful little scenario for 'flexing the muscles' of acceleration in space-propertime a little and so giving a better intuitive feel for th...
Views: 236, Comments: 8
Last comment 08/18/2020 by canadianslidewinder

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