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General Discussion

14789 threads, 271211 comments (36 Viewing)

Florida Might Tax The Sunlight Soon

10/27/2016 by BruceFlorida
A huge amount of money is being used to promote Amendment 1 that we are voting on in two weeks. The ads promote voting yes to support solar energy and...
Views: 187, Comments: 12
Last comment 10/28/2016 by Jpfalt

Weldment Drawings, BOM and Cut List

10/27/2016 by BruceFlorida
Typically a drawing's BOM lists all materials to be purchased or otherwise obtained for the item being fabricated or assembled by the drawing. Typical...
Pathfinder Tags: SolidWorks BOM & Cutlist
Views: 135, Comments: 9
Last comment 10/28/2016 by Massey

1997 Jeep Grand Cherokee Laredo

10/27/2016 by musicalbard
I went out to start my Jeep, she turned over just fine but did not start. This is typical. I usually have to turn the key over twice to get her to sta...
Pathfinder Tags: jeep grand cherokee laredo
Views: 144, Comments: 5
Last comment 10/28/2016 by Nexthermal

Silicon Valley Fashion Week

10/27/2016 by BestInShow
I'm fascinated with the ways traditional women's wear designers (e.g. Ralph Lauren) and anything-but-traditional designers approach wearable technolog...
Pathfinder Tags: silicon valley fashion week
Views: 85, Comments: 7
Last comment 10/28/2016 by Jpfalt
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Commercial Space

1950 threads, 3697 comments (0 Viewing)

Manager SDC Lindås warehouse sökes till Xylem

10/21/2016 by Express
Produktionsledare På Xylem arbetar 12 500 personer mot ett gemensamt mål: att skapa innovativa lösningar för världens vatt...
Pathfinder Tags: job jobs
Views: 35, Comments: 1
Last comment 10/21/2016 by Rixter

Optoelectronic security system

10/21/2016 by CuriousEngineer
Hi everybody, I would appreciate your thoughts regarding a newly developed security system for detecting damages to an object. It uses an optical mul...
Views: 27, Comments: 0
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CR4 Feedback

680 threads, 11908 comments (1 Viewing)

Email Notification

10/17/2016 by Codemaster
I seem to have have stopped getting email notification of new comments on threads I've posted to. Noticed that when posting for the first time, there...
Views: 104, Comments: 2
Last comment 10/18/2016 by SavvyExacta
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Section Blogs


38 blog entries, 285 comments (1 Viewing)

Self-Driving Trucks In Colorado

10/26/2016 by Bayes
Self-driving vehicles have always seemed to me to be one of those technologies that is in development for a long time without any real world adoption....
Views: 223, Comments: 10
Last comment 10/28/2016 by Phys

A Million People on Mars

09/29/2016 by Bayes
Elon Musk recently unveiled his dream for Mars colonization, envisioning one million people on Mars by the end of this century. Here is the 90 minute...
Views: 276, Comments: 24
Last comment 09/30/2016 by JBTardis
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Caption This!

383 blog entries, 16296 comments (5 Viewing)

Caption This for 10/28/16

10/27/2016 by LakeGrl
This week's image: Be sure to vote for your favorite caption! Thanks to Nigh for submitting this image.
Pathfinder Tags: bridges engineering engineering images engineers life Trucks
Views: 221, Comments: 26
Last comment 10/28/2016 by Jpfalt

Caption This for 10/21/16

10/20/2016 by LakeGrl
This week's image: Be sure to vote for your favorite caption! Thanks to HeadsUp for submitting this image.
Pathfinder Tags: engineering engineering images engineers life safe load for shoe laces
Views: 535, Comments: 32
Last comment 10/25/2016 by MR. Guest
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The Engineer's Notebook

369 blog entries, 5758 comments (0 Viewing)

Cursive vs. Manuscript

10/20/2016 by Chelsey H
Do you write in cursive or manuscript? Do you write in a mixture of the two? Whether or not to teach cursive in elementary schools has been a debate...
Views: 633, Comments: 65
Last comment 10/25/2016 by SolarEagle

Genius or Just Plain Lazy? The Internet Coke Machine

10/13/2016 by BestInShow
Yesterday a discussion in a meeting reminded me of Carnegie Mellon University’s Internet Coke Machine. Histories of the Internet of Things (IOT)...
Pathfinder Tags: Carnegie Mellon University internet coke machine internet of things
Views: 414, Comments: 13
Last comment 10/15/2016 by smokingwheels
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Animal Science

229 blog entries, 2118 comments (0 Viewing)

Toilets and Oysters

10/19/2016 by joeymac
Oysters were once plentiful in the New York Harbor in the 19^th century but by the 20^th century, overfishing, pollution and sewage destroyed the oyst...
Pathfinder Tags: Environment environmental protection EPA NYC harbor oysters ...
Views: 264, Comments: 11
Last comment 10/25/2016 by JE in Chicago

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: 193, Comments: 6
Last comment 09/28/2016 by elsmitro
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Editor's Desk

91 blog entries, 325 comments (0 Viewing)

Engineer's Guide to Corrosion, Part 1 and 2 Now Available!

10/13/2016 by wagman262
Parts 1 and 2 of our series on corrosion basics are available. Part 1 can be found here. And Part 2 can be found here. Weigh in with your comments!
Views: 265, Comments: 8
Last comment 10/20/2016 by IdeaSmith

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: 198, Comments: 5
Last comment 09/18/2016 by agua_doc
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Defense & Security Technology

107 blog entries, 1595 comments (0 Viewing)

NY Boosts Facial Recognition

10/03/2016 by Engineering360 eNewsletter
New York has taken a leading role in developing counter-terrorism measures through its State Department of Motor Vehicles. Last January the agency imp...
Views: 189, Comments: 6
Last comment 10/10/2016 by phoenix911

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: 1226, Comments: 86
Last comment 09/19/2016 by reward54
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Challenge Questions

344 blog entries, 28297 comments (3 Viewing)

The Occasional Spark: Newsletter Challenge (October 2016)

This month's Challenge Question: Specs & Techs from IEEE Engineering360: Sharp or pointed objects in the air – like a ship’s mast, an...
Pathfinder Tags: challenge questions
Views: 1690, Comments: 20
Last comment 10/16/2016 by amichelen

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: 1238, Comments: 10
Last comment 09/28/2016 by Torqued
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65 blog entries, 577 comments (0 Viewing)

The San Fran Skyscraper with a Six-Inch Slant

09/28/2016 by HUSH
Skyscrapers are a lot more to a city than just real estate. They represent financial prosperity and engineering acumen. They transform the identity of...
Pathfinder Tags: construction engineering Millennium Tower skyscraper
Views: 581, Comments: 18
Last comment 10/27/2016 by MR. Guest

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: 714, Comments: 12
Last comment 03/31/2016 by SolarEagle
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The CR4 Admin Blog

97 blog entries, 1465 comments (0 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: 126, 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: 135, Comments: 9
Last comment 09/09/2016 by dj95401
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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: 298, 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: 214, 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: 168, 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: 172, 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: 537, 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: 1714, 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: 170, 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: 373, Comments: 0
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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: 312, 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: 362, Comments: 7
Last comment 02/03/2016 by BestInShow
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Rockaholic Adventures

49 blog entries, 603 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: 430, 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: 296, 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: 796, Comments: 18
Last comment 12/21/2015 by Hilton
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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: 640, 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: 592, 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: 678, 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: 972, 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: 1054, Comments: 33
Last comment 01/02/2014 by artsmith