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Section Forums

General Discussion

14726 threads, 269528 comments (18 Viewing)

Exercising and Yoga are ideal for keeping mind fresh

09/26/2016 by arnoldovchapman
Nutritional supplements are method to help your memory, but couple options other crucial elements also. CogniShield Stress could hinder brain and memo...
Pathfinder Tags: cognishield
Views: 4, Comments: 0

Nuvo H2o

09/24/2016 by tonyhemet
Yesterday a customer asked me to fix her swamp cooler because it wasn't pumping water, turned out the pump shaft had froze up because of hard water mi...
Views: 134, Comments: 13
Last comment 09/26/2016 by jdsighter

Flow Metter for Painting Application

09/24/2016 by nhat925
Dear all, Does anyone know the most suitable flow metter used in the application as below: * Normal flowrate: 1 l/minute * Normal temperature ~25-...
Pathfinder Tags: Flow metter
Views: 104, Comments: 12
Last comment 09/25/2016 by lyn

CR4 App for Smartphone

09/23/2016 by Usbport
I sometimes look at CR4 using my smartphone (iphone 6s+). I noticed this morning that once I added a comment to a thread there was no way to get back...
Pathfinder Tags: CR4 CR4 App smartphone
Views: 101, Comments: 10
Last comment 09/25/2016 by SolarEagle
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Commercial Space

1947 threads, 3695 comments (1 Viewing)

Allen Bradley PLC Programmer Wanted

09/12/2016 by HCastro1030
Looking for Allen Bradley PLC programming support in the DC/MD/VA region. Please reply to this post or e-mail. CR4 ADMIN - email address removed Fr...
Views: 44, Comments: 0

Paper Writing Help Online

09/08/2016 by clarkjohnsonn
Web has made it less complex for anybody to investigate every one of the information accessible online and discover it utilizing different web search...
Pathfinder Tags: STUDIES
Views: 52, Comments: 0

Part-Time Data Science Bootcamp Online

09/07/2016 by Bondarul
K2 Data Science offers a part-time data science bootcamp online, which I recommend highly. They offer an advanced curriculum and project based structu...
Views: 38, Comments: 0
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CR4 Feedback

679 threads, 11905 comments (0 Viewing)


09/18/2016 by sharkman
How do I send a P m?
Views: 81, Comments: 6
Last comment 09/19/2016 by sharkman

CR4 Face to Face Meet

09/09/2016 by xyz
At least in USA does CR4 organize a face to face get together/ fellowship meeting of active members of CR4 where people see/ discuss face to face- wit...
Views: 704, Comments: 89
Last comment 09/17/2016 by Casper71

Daily Digest Link Problem

09/06/2016 by Nigh
Has anyone else had problems accessing posts from the Daily Digest? For the past couple of days, if I click on a link to a post in the Daily Digest e-...
Views: 252, Comments: 14
Last comment 09/07/2016 by roy hammy


08/29/2016 by Tom_Consulting
I want to apologize to CR4 for inadvertently starting a "political" discussion. It was very interesting to see how quickly a question about engineerin...
Views: 136, Comments: 12
Last comment 09/17/2016 by Ferris
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See all Blog Entries

Section Blogs

Caption This!

385 blog entries, 16140 comments (1 Viewing)

Caption This for 9/23/16

09/22/2016 by LakeGrl
This week's image: Be sure to vote for your favorite caption! Thanks to brich for submitting this image.
Pathfinder Tags: engineering engineering images engineers life funny images wheels
Views: 364, Comments: 21
Last comment 09/23/2016 by phoenix911

Caption This for 9/16/16

09/15/2016 by LakeGrl
This week's image: Be sure to vote for your favorite caption! Thanks to energyconversion for submitting this image.
Pathfinder Tags: boxes engineering engineering life funny engineering images instructions
Views: 540, Comments: 35
Last comment 09/24/2016 by Kris
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36 blog entries, 244 comments (0 Viewing)

Nokia Achieves Internet Speeds 1000x Faster Than Google Fiber

09/21/2016 by Bayes
Google Fiber has connection speeds of 1 GB/s. That's about 100x faster than most people's cable modem connection. Naturally Google Fiber is the prefer...
Views: 173, Comments: 6
Last comment 09/22/2016 by Bayes

Rosetta's Philae Spacecraft Found

09/06/2016 by Bayes
- Lost Lander Found - Philae is a robotic European Space Agency (ESA) lander that accompanied the Rosetta spacecraft until it separated to land on co...
Views: 227, Comments: 3
Last comment 09/09/2016 by Massey
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Defense & Security Technology

106 blog entries, 1589 comments (0 Viewing)

USS Zumwalt, The Navy's Newest Masterpiece?

09/14/2016 by HUSH
Last week the USS Zumwalt motored from the manufacturer’s shipyard in Bath, Maine to a Navy base in Newport, Rhode Island, as the U.S. Navy comp...
Pathfinder Tags: defense railgun stealth warship
Views: 1165, Comments: 86
Last comment 09/19/2016 by reward54

AI System Beats Top Gun

08/11/2016 by Engineering360 eNewsletter
A University of Cincinnati grad student's ALPHA artificial intelligence system recently bested a U.S. Air Force elite fighter pilot and instructor in...
Views: 149, Comments: 1
Last comment 08/12/2016 by Rixter
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Editor's Desk

90 blog entries, 317 comments (0 Viewing)

Amazon's Bezos Unveils New Rocket Design

09/13/2016 by wagman262
Plans for the New Glenn rocket were unveiled by Amazon's Jeff Bezos. Have a look at the article, then tell us about your earliest memory of a rocket l...
Views: 164, Comments: 5
Last comment 09/18/2016 by agua_doc

Remember Joe Sutter by Naming Your Favorite Aircraft!

08/31/2016 by wagman262
Joe Sutter, chief engineer for the Boeing-747, died August 30. Here's an article remembering some of his lifetime achievements. What's your favorite a...
Views: 368, Comments: 18
Last comment 09/07/2016 by Deefburger
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The CR4 Admin Blog

97 blog entries, 1465 comments (1 Viewing)

Managing Your Subscribed Discussions (Part 3)

CR4 discussions are like real life conversations. They start off on topic, and later veer off track as the discussion evolves. Maybe you are subscribe...
Pathfinder Tags: CR4 Tutorial
Views: 90, Comments: 0

CR4 Daily Digest Email - What You Should Know

09/07/2016 by SavvyExacta
The CR4 Daily Digest is an email summarizing new content on CR4. It includes the latest forum threads, blog posts, and news to your inbox every single...
Pathfinder Tags: CR4 Tutorial Daily Digest
Views: 130, Comments: 9
Last comment 09/09/2016 by dj95401
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Challenge Questions

343 blog entries, 28276 comments (0 Viewing)

Sluggish Growth: Newsletter Challenge (September 2016)

This month's Challenge Question: Specs & Techs from IEEE Engineering360: A researcher studying the velocities of various natural processes is imp...
Pathfinder Tags: challenge questions
Views: 945, Comments: 9
Last comment 09/06/2016 by Jpfalt

Pulsar Astronomy: Newsletter Challenge (August 2016)

This month's Challenge Question: Specs & Techs from IEEE GlobalSpec Engineering360: A double pulsar system is considered a terrific object for st...
Pathfinder Tags: challenge questions
Views: 1245, Comments: 13
Last comment 08/23/2016 by Physicist?
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Animal Science

228 blog entries, 2106 comments (0 Viewing)

Managing Deer Populations for Auto Safety

08/26/2016 by HUSH
It’s beginning to look a lot like deer season in upstate. Lately, the county routes around my home have been swarming with deer and fawns, which...
Pathfinder Tags: automotive deer ecology predator
Views: 149, Comments: 5
Last comment 08/29/2016 by vsar

ICARUS Flies Again

07/25/2016 by BestInShow
In 2017, an ambitious wildlife-tracking project will quite literally get off the ground. ICARUS (International Cooperation for Animal Research Using S...
Pathfinder Tags: animal migration ICARUS initiative tracking
Views: 118, Comments: 0
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TechnoTourist’s Engineering Expeditions

83 blog entries, 490 comments (0 Viewing)

A Piece of Ireland in Texas

08/23/2016 by joeymac
Everyone knows that kissing the Blarney Stone over in Ireland is supposed to give a person the gift of gab and eloquence of speech. I was fortunate en...
Pathfinder Tags: Blarney Stone Ireland texas Texas Tech
Views: 260, Comments: 7
Last comment 08/25/2016 by joeymac

Amsterdam's Canals

07/13/2016 by joeymac
When I went on my European trip another stop I made was to Amsterdam, and I was fascinated by all of the canals and bridges connecting to everything....
Pathfinder Tags: Amsterdam architecture canal design canals Holland ...
Views: 208, Comments: 0
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The Engineer's Notebook

367 blog entries, 5680 comments (0 Viewing)

Rio Olympians Sport High-Tech Sports Apparel

08/11/2016 by BestInShow
Without the legions of scientists and engineers who develop new athletic gear, the quadrennial crop of Olympic athletes might not turn in breathtaking...
Pathfinder Tags: high-tech uniforms olympics
Views: 137, Comments: 0

The Hottest Technology in Olympic Cycling

08/09/2016 by BestInShow
First, a disclaimer: I’m not a bicycle expert. On the far-too-rare occasions when I saddle up, I wipe the cobwebs off my 20-plus-year-old hybri...
Pathfinder Tags: cycling olympics
Views: 275, Comments: 0
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Notes & Lines

36 blog entries, 263 comments (0 Viewing)

Musical AI Takes Off

07/28/2016 by Jonathan Fuller
Music is a no-brainer when it comes to AI research. It has a finite set of rules, a relatively limited scale, and pretty strict limits as to what &ldq...
Pathfinder Tags: AI artificial intelligence Baidu magenta Music ...
Views: 137, Comments: 0

A Portable Pipe Organ: the International Touring Organ

07/05/2016 by BestInShow
Jonathan Fuller describes how the digital organ grew from the desire of a father to give his son a decent instrument to play at home. The desire of a...
Pathfinder Tags: Cameron Campbell digital organ Marshall and Ogletree
Views: 166, Comments: 0
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Relativity and Cosmology

147 blog entries, 3988 comments (0 Viewing)

Another Relativity "Paradox"

04/11/2016 by Jorrie
A futuristic spaceship is stationed at its base, which is static at 10 light years (ly) from Earth in free space. The ship and base clocks are rat...
Pathfinder Tags: acceleration relativity
Views: 499, Comments: 27
Last comment 06/07/2016 by tick-tock

Time Dilation and Lorentz Contraction Revisited

03/27/2016 by Jorrie
- Intro - There are many fundamental relativity discussions that are buried deep inside related threads and hence very difficult to access at a...
Pathfinder Tags: Lorentz contraction Velocity time dilation
Views: 1629, Comments: 130
Last comment 08/18/2016 by ralfcis
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IHS Product Design Blog

5 blog entries, 1 comments (0 Viewing)

Engineering Webinar Calendar - April 2016

04/04/2016 by SavvyExacta
Engineering360 has a great lineup of webinars each month. Learn about specific topics from industry experts, for free, from the comfort of your own...
Pathfinder Tags: education webinars
Views: 158, Comments: 0

Webinar Calendar – January 2016

01/11/2016 by SavvyExacta
Engineering360 has a great lineup of webinars each month. Learn about specific topics from industry experts, for free, from the comfort of your own...
Pathfinder Tags: adhesives education electronics emissions pollution control ...
Views: 349, Comments: 0
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64 blog entries, 559 comments (0 Viewing)

World's Most Dangerous Dam Threatens Up to 1.5 Million

03/30/2016 by HUSH
There could be an unprecedented engineering disaster in the weeks or months ahead. Mosul Dam in north Iraq is dangerously close to collapsing, years...
Pathfinder Tags: civil enginering dam flooding grout
Views: 668, Comments: 12
Last comment 03/31/2016 by SolarEagle
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Roger's Equations

171 blog entries, 1764 comments (0 Viewing)

A Gravitational Wave Observatory in Space

03/18/2016 by Bayes
Given the recent success of LIGO detecting gravitational waves, it shouldn't be surprising there is renewed interest in the press regarding other plan...
Views: 280, Comments: 3
Last comment 03/22/2016 by Bayes

Mathematical Structures in Classical Books

01/28/2016 by Bayes
I came across this very interesting article regarding fractal structures in classical literature and thought I'd pass it along. - R - Scientists find...
Views: 357, Comments: 7
Last comment 02/03/2016 by BestInShow
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Rockaholic Adventures

49 blog entries, 602 comments (0 Viewing)

Levees Fail Again

03/10/2016 by Shawn
Lack of accurate data plagues geological predictions. Whether we are assessing climate change, tropical storm probabilities, or the significance of...
Pathfinder Tags: big old muddy levees mississippi Old River Control Structure ORCS
Views: 397, Comments: 11
Last comment 03/14/2016 by Shawn

East Coast Mourns

03/04/2016 by Shawn
I'm afraid there is an epidemic going around that has all but squandered any resemblance of a winter for portions of the East Coast of the United S...
Pathfinder Tags: 2015/2016 winter El Nino
Views: 292, Comments: 12
Last comment 03/30/2016 by westbye
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What Is It?

68 blog entries, 1860 comments (0 Viewing)

What is It? for December 16

Do you know what this is? Share your answer, below! Submitted by CR4 user Whitephone.
Pathfinder Tags: What is it?
Views: 763, Comments: 18
Last comment 12/21/2015 by Hilton
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Physics In Film

11 blog entries, 91 comments (0 Viewing)

Back to the Future Tech - How Do We Compare?

10/23/2015 by cheme_wordsmithy
So two days ago was October 21, 2015 - the monumental day when Marty McFly time traveled into the future in the movie Back To The Future Part II. Be...
Views: 538, Comments: 2
Last comment 10/26/2015 by adreasler
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Other Blog Entries of Interest

3D Printing a NASA Space Wrench - Video

02/01/2016 posted in Workbench Creations
by SavvyExacta
Watch our 3D printer create a NASA space wrench! You may have seen our previous posts explaining that we would be conducting a live Periscope broadca...
Pathfinder Tags: 3D Printing additive manufacturing NASA nasa space wrench periscope
Views: 597, Comments: 1
Last comment 07/12/2016 by MR. Guest

Electrical Engineering Master's for Busy Professionals

10/18/2015 posted in Engineering...Beyond the Classroom
by Penn State
Penn State World Campus, the online learning platform for The Pennsylvania State University, offers a 100% online, 30-credit Master of Engineering...
Pathfinder Tags: ee degree electrical engineer masters degree penn state
Views: 578, Comments: 0

Scrap Metal Wire Stripper

12/12/2014 posted in Workbench Creations
by frankd20
I have been working on a lot of building projects, with not much time for anything else these last few years. As part of these projects, I ended up...
Pathfinder Tags: copper wire recycling wire stripper
Views: 674, Comments: 10
Last comment 08/15/2016 by dj95401

Slo' Mo' Hat Cam

07/04/2014 posted in Workbench Creations
by Del the cat
I wanted to see how my arrows were flying from my bow, specifically flight arrows. A flight arrow presents a conundrum, you'd think you would want...
Views: 967, Comments: 67
Last comment 07/15/2014 by europium mkII

Whistling Walnut!

12/28/2013 posted in Workbench Creations
by Del the cat
What to do with the walnut shells left over from Christmas? Make a whistling arrow . I'd been toying with the idea for ages, and if you try an...
Views: 1046, Comments: 33
Last comment 01/02/2014 by artsmith