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05/02/2016 12:00 AM

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Section Forums

General Discussion

14482 threads, 263458 comments (19 Viewing)

Old movies vs newer on Youtube

05/24/2016 by wrenchtwirler
When watching movies on Youtube I've noticed that movies from the 30s are generally in much better condition and much more watchable than movies from...
Views: 22, Comments: 2
Last comment 05/24/2016 by jack of all trades

I Predict Temetech will Smile this Week

05/24/2016 by Fredski
crude traded in the 49's, It could hit 50 by tomorrow
Views: 31, Comments: 2
Last comment 05/24/2016 by tcmtech

I Demand You Replace Me!

05/24/2016 by Fredski
that $15 extortion demand has consequences. new robots working in harmony at...
Views: 114, Comments: 44
Last comment 05/24/2016 by phoenix911

Space Shuttle Tile Material

05/24/2016 by Bayes
This is pretty amazing....really shows how incredibly dissipative the Space Shuttle Thermal Tile material was.
Views: 93, Comments: 5
Last comment 05/25/2016 by NeilA

Is There A Scientific Answer For This?

05/24/2016 by Autobroker
A couple weeks ago, my sister sent me to her "energy healing person". I thought it was silly, but she told me the worst that could happen is I'd fall...
Views: 95, Comments: 31
Last comment 05/24/2016 by Canary
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Commercial Space

1928 threads, 3668 comments (6 Viewing)

Welcome CMM Group, Provides VOC Emission Control

05/17/2016 by cmmgroup
The CMM Group, LLC provides turnkey design, fabrication, installation and project management services for VOC emission control, custom made Ovens...
Pathfinder Tags: dryer emission manufacturing oven oxidizer ...
Views: 24, Comments: 0

[Free App] Vessel Calculator

04/27/2016 by Anonymous Poster
This vessel calculator is programed for calculating the wetted area and volume of these vessels for various types of curved ends including: hemisp...
Views: 96, Comments: 1
Last comment 04/27/2016 by PallaS
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CR4 Feedback

666 threads, 11644 comments (1 Viewing)

Can Not Import Pictures

05/19/2016 by phoenix911
Need a little assistance here,... A few weeks ago, I lost the ability to import pictures here on CR4, as will as inserting emojicons and edit Hyperli...
Views: 63, Comments: 18
Last comment 05/19/2016 by lyn
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Section Blogs

The Engineer's Notebook

359 blog entries, 5613 comments (0 Viewing)

Grow Plants in Rocks! Innovative Horticultural Substrates

05/20/2016 by BestInShow
When I was researching my previous post, on living walls, , I discovered that an inorganic substance, stone wool, is used as a growing substrate for...
Pathfinder Tags: coconut coir florafelt stone wool vertical garden woollypocket
Views: 106, Comments: 0

Behind the Scenes at the Museum

05/08/2016 by Chelsey H
I love anything behind the scenes! That's why I was so excited to see pictures of the storage areas in the Smithsonian Museum of Natural History (NM...
Views: 174, Comments: 2
Last comment 05/08/2016 by SolarEagle

Living Walls, Living Roofs: Old Ideas and New Technologies

05/06/2016 by BestInShow
The idea for this post came to me last summer, when Mr. Best in Show and I were in Avignon. The central market's north façade is a stunning living w...
Pathfinder Tags: living walls biowalls Patrick Blanc Avignon Les Ha
Views: 171, Comments: 4
Last comment 05/09/2016 by adreasler
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Caption This!

361 blog entries, 15556 comments (0 Viewing)

Caption This for 5/20/16

05/19/2016 by LakeGrl
This week's image: Be sure to vote for your favorite caption! Thanks to PeterT for submitting this image.
Pathfinder Tags: engineering engineering images engineers life funny images signs
Views: 413, Comments: 21
Last comment 05/21/2016 by horace40

Caption This for 5/13/16

05/12/2016 by LakeGrl
This week's image: Be sure to vote for your favorite caption! Thanks to Nigh for submitting this image.
Pathfinder Tags: engineering engineering images eyes funny images
Views: 556, Comments: 42
Last comment 05/18/2016 by jhowdy

Caption This for 5/6/16

05/05/2016 by LakeGrl
This week's image: Be sure to vote for your favorite caption!
Pathfinder Tags: construction engineering engineering images engineers life funny images
Views: 558, Comments: 43
Last comment 05/18/2016 by wayneelowe
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Editor's Desk

78 blog entries, 276 comments (0 Viewing)

A City Car for the Masses

05/19/2016 by wagman262
A group of non-auto companies--including Shell Oil--have teamed up to design what they think is a different kind of "city car." Read our feature on th...
Views: 154, Comments: 1
Last comment 05/22/2016 by lyn

Global LEV Markets Are on the Rise

05/12/2016 by wagman262
Analysis suggests global market growth for low-emission vehicles, including electric and fuel cell powered models. Plenty of hurdles exist for the tec...
Views: 87, Comments: 3
Last comment 05/13/2016 by LOCKDUKE

Six Sigma for Electric Power Plants: Really?

05/10/2016 by wagman262
Six Sigma: good, bad or ugly? Read Victor Rodgers' article that discusses his misgivings for the practice, then add your comments.
Views: 247, Comments: 13
Last comment 05/20/2016 by NotUrOrdinaryJoe
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Defense & Security Technology

101 blog entries, 1485 comments (0 Viewing)

Camo Fabric Changes Color

05/12/2016 by Engineering360 eNewsletter
Developers at China's Nanjing Tech University have created an organic polymer fabric that uses voltage application to change color. The material was...
Views: 123, Comments: 0

Fighter Jets Get Laser Weapons (in 2023)

05/11/2016 by HUSH
The first laser ray gun was fictionalized in the 1898 novel War of the Worlds and as a result, energy weapons have been staples of science fiction ar...
Pathfinder Tags: aerospace air force Laser weapon
Views: 280, Comments: 9
Last comment 05/15/2016 by Peterpipper

Handheld Detector Finds Explosives

05/03/2016 by Engineering360 eNewsletter
A University of Utah team has created a handheld scanner that sniffs out alkaline fuel vapor, a component of explosives. Twin composite nanofibers th...
Views: 80, Comments: 0
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Notes & Lines

34 blog entries, 262 comments (0 Viewing)

Snow in June, Frost in July, Ice in August

05/09/2016 by Jonathan Fuller
This coming summer marks the 200^th anniversary of one of the most severe weather anomalies in modern history. The Year Without a Summer, as it's no...
Pathfinder Tags: 1816 climate tambora year without a summer
Views: 307, Comments: 7
Last comment 05/13/2016 by Just an Engineer

Earth Day, And Problematic Predictions

05/02/2016 by Jonathan Fuller
There are few more polarizing issues than environmental ones: climate change, the feasibility of alternative energy, and, in recent news, Earth Day....
Pathfinder Tags: earth day long now Prediction sustainability
Views: 175, Comments: 6
Last comment 05/10/2016 by Phys

The Evolution of Tech Grammar, or: Language is Goofy

04/18/2016 by Jonathan Fuller
From 2008 to 2009 I worked for HSBC Bank, one of the more interesting workplaces to be in during the Great Recession. A disgruntled non-customer, wh...
Pathfinder Tags: ap style grammar words
Views: 401, Comments: 21
Last comment 05/17/2016 by HiTekRedNek
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17 blog entries, 155 comments (0 Viewing)

Mercury Transit of Sun - Live Streams - 5/9/16

05/09/2016 by Bayes
Today Mercury transits the Sun. Here are some feeds of the event occurring right now, 8 am on May 9th, and for the next several hours
Views: 118, Comments: 1
Last comment 05/10/2016 by IdeaSmith

Unmanned SpaceX Mission to Mars by 2018

04/28/2016 by Bayes
Elon Musk has long declared his reason for creating SpaceX was to see humans become a multiplanetary species. To that end he has long set his sights o...
Views: 149, Comments: 2
Last comment 04/29/2016 by Bayes

Possible Explanation for Impossible EM Drive

04/23/2016 by Bayes
A very interesting theory has been put forth to explain why the EM drive works. Up till now, scientists have been baffled how something that should pr...
Views: 311, Comments: 13
Last comment 04/26/2016 by English Rose
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Challenge Questions

339 blog entries, 27994 comments (2 Viewing)

Permanent Magnet: Newsletter Challenge (May 2016)

05/01/2016 This month's Challenge Question: Specs & Techs from IHS Engineering360: You have two steel bars. One is a permanent magnet and the other is not...
Pathfinder Tags: challenge questions Magnets
Views: 2707, Comments: 46
Last comment 05/24/2016 by Andy Germany

Gliese 581g: Newsletter Challenge (April 2016)

04/01/2016 This month's Challenge Question: Specs & Techs from IHS Engineering360: Earth has sent a team of scientists to explore Gliese 581g, a super-Eart...
Pathfinder Tags: challenge questions
Views: 1707, Comments: 17
Last comment 04/19/2016 by James Stewart

Liquid in Motion: Newsletter Challenge (March 2016)

02/29/2016 This month's Challenge Question: Specs & Techs from IHS Engineering360: Entering a laboratory, you notice a motionless clear cylinder resting on...
Pathfinder Tags: challenge questions
Views: 2906, Comments: 40
Last comment 04/10/2016 by Casper71
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Animal Science

223 blog entries, 2049 comments (0 Viewing)

17-Year-Old Cicadas are Coming to the Northeast

04/22/2016 by joeymac
Next month, when temperatures warm, billions of cicadas will emerge from the ground as they become 17 years old. This brood will be located in New...
Pathfinder Tags: 17 year bug noise bugs cicada insect ...
Views: 352, Comments: 13
Last comment 04/26/2016 by Rixter

Ancient Dung May Unlock Punic War Mystery

04/15/2016 by joeymac
Scientists may have unlocked one of the great mysteries of the ancient world by analyzing microbes from horse manure to discover where Hannibal and...
Pathfinder Tags: bacteria carthage dung Hannibal horse ...
Views: 328, Comments: 6
Last comment 04/20/2016 by wolfie62

Then There Were Three

02/29/2016 by joeymac
The Yangtze giant softshell turtle is one of the rarest turtles on Earth and now they've become even rarer. A famous Yangtze softshell turtle in Viet...
Pathfinder Tags: breeding program endangered softshell turtle turtle yangtzee river
Views: 227, Comments: 6
Last comment 03/01/2016 by joeymac
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Relativity and Cosmology

147 blog entries, 3978 comments (1 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: 356, Comments: 26
Last comment 04/16/2016 by horace40

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: 686, Comments: 121
Last comment 05/24/2016 by ralfcis

How Zeons turned into something Useful

06/30/2015 by Jorrie
In the last Blog, How Aeons turned into Zeons, we derived a very simple formula for the expansion dynamics of the cosmos, normalized to a 'natural cos...
Views: 538, Comments: 0
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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: 89, 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: 257, Comments: 0

Webinar Calendar - December 2015

12/17/2015 by SavvyExacta
December is halfway over, but there's still one more webinar on the Engineering360 calendar for 2015. Webinars allow you to learn about specific topi...
Pathfinder Tags: microwave power RF Semiconductor
Views: 192, Comments: 0
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The CR4 Admin Blog

92 blog entries, 1409 comments (0 Viewing)

A CR4 Scavenger Hunt

04/01/2016 It's April Fools' Day, it's Friday - what more of an excuse do you need for a distraction? Here is a five-question scavenger hunt for you. If you ar...
Pathfinder Tags: april fools day scavenger hunt
Views: 242, Comments: 13
Last comment 04/07/2016 by SavvyExacta

A Gentle Reminder about Community Participation

03/23/2016 by SavvyExacta
CR4 is a great place because it's made up of people from diverse backgrounds, both in terms of subject matter and location. This wide range of exper...
Views: 271, Comments: 8
Last comment 03/25/2016 by dkwarner

More News! Electronics360 Articles Added to Feed

03/01/2016 by SavvyExacta
The CR4 homepage and Daily Digest newsletter now have even more news to help you stay informed. - News Feed on CR4 - In addition to the feed of news...
Pathfinder Tags: Engineering news
Views: 56, Comments: 1
Last comment 03/01/2016 by BestInShow
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64 blog entries, 555 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: 520, Comments: 12
Last comment 03/31/2016 by SolarEagle

Why We Need Others To Catch Our Typos

09/04/2015 by cheme_wordsmithy
If yvo'ue raed something aoubt how the brian wrkos you may konw why you can raed tihs snetecne whiuott mcuh tbruloe. I remember the first time...
Views: 629, Comments: 18
Last comment 09/11/2015 by energyconversion
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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: 155, 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: 313, Comments: 7
Last comment 02/03/2016 by BestInShow

Failures in Hypothetical Planets - Vulcan

01/24/2016 by Bayes
Mercury's Perihelion Precession In 1859, Urbain Le Verrier was the first to report that the slow precession of Mercury's orbit around the Sun could n...
Views: 224, Comments: 3
Last comment 01/25/2016 by Phys
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Rockaholic Adventures

49 blog entries, 598 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: 263, 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: 254, Comments: 12
Last comment 03/30/2016 by westbye

Engineering Your Climbing Rack (Part II)

02/25/2016 by Shawn
A climber's rope is the life line of their fall protection equipment. It connects the climber to his partner and renders all other fall protection...
Pathfinder Tags: climbing rope free climbing
Views: 145, Comments: 0
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What Is It?

68 blog entries, 1860 comments (0 Viewing)

What is It? for December 16

12/16/2015 Do you know what this is? Share your answer, below! Submitted by CR4 user Whitephone.
Pathfinder Tags: What is it?
Views: 640, Comments: 18
Last comment 12/21/2015 by Hilton

What is It? for July 26

07/26/2015 What is it? Share your guess in the comments below! Thanks to CR4 member Nigh for sharing this image.
Views: 780, Comments: 26
Last comment 07/28/2015 by GameJudge

What is It? for July 19

07/19/2015 What is it? Share your guess in the comments below! Thanks to CR4 member SolarEagle for sharing this image.
Pathfinder Tags: what is it
Views: 626, Comments: 36
Last comment 07/27/2015 by simonsd
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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: 433, Comments: 2
Last comment 10/26/2015 by adreasler

Do We Finally Get Hoverboards in 2015?

07/29/2015 by HUSH
Since skateboarding doesn't require enough agility and balance, next week Lexus will officially unveil a hoverboard. Ever since Marty McFly used a h...
Pathfinder Tags: Back to the Future hoverboard Lexus maglev
Views: 360, Comments: 4
Last comment 07/31/2015 by BabyGuinness
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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: 348, Comments: 0

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: 509, 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: 594, Comments: 8
Last comment 12/18/2014 by C-Mac

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: 928, 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: 1011, Comments: 33
Last comment 01/02/2014 by artsmith

Detective Work On An Exploded Warbow

07/11/2013 posted in Workbench Creations
by Del the cat
It's often impossible to actually work out how and why a bow explodes. But this time I think I know! I was building a copy of a Mary Rose Warb...
Views: 1077, Comments: 13
Last comment 07/14/2013 by lyn


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