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General Discussion

15220 threads, 283887 comments (17 Viewing)

Questions Asked of Job Applicants

06/22/2017 by BestInShow
A far cry from the usual "what do you see yourself doing in five years" question.
Views: 100, Comments: 41
Last comment 06/22/2017 by Rixter

Technological Progress

06/21/2017 by ronseto
Technological progress with robotics is wonderful, but not when it means displacing humans. The purpose of using robots is to increase profits for com...
Views: 84, Comments: 13
Last comment 06/22/2017 by James Stewart

When is AI Coming for Your Job

06/21/2017 by SolarEagle
We can see it coming, the day when humans are no longer employable in certain jobs because a robot has become more cost efficient....How long is your...
Views: 131, Comments: 14
Last comment 06/22/2017 by James Stewart

Polaritons, Light of the Future

06/21/2017 by SolarEagle
..."Anyone who’s taken any sort of physics knows that light can travel as photons or particles as well as waves. It may be hard to imagine, bu...
Views: 197, Comments: 11
Last comment 06/22/2017 by James Stewart
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Commercial Space

1984 threads, 3788 comments (0 Viewing)

Hiring Software/Hardware Engineers

06/20/2017 by HRBS
ReMute Corp is a startup technology company utilizing mobile apps, firmware, and broadcast television. We are currently hiring software engineers that...
Views: 9, Comments: 0

Industrial Instrumentation Resources

05/28/2017 by ieseberri
Hello, I've created this website with the aim to share professional documents (Resources, Selection Guides, White Papers, Manuals, Primers, Basics,.....
Views: 121, Comments: 0
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CR4 Feedback

690 threads, 12062 comments (0 Viewing)


06/11/2017 by dhayanandhan
To: cr4 admn. I give the reply from Hush, in response to my posting on the above topic. I seek your help/advice and how to find out my posting. I g...
Views: 101, Comments: 5
Last comment 06/11/2017 by SolarEagle

Where Are The Mods Today?

06/03/2017 by Andrew Westman
The home page is swamped with spam and has been for hours.
Views: 148, Comments: 10
Last comment 06/05/2017 by Andrew Westman
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Section Blogs

The Engineer's Notebook

422 blog entries, 6954 comments (1 Viewing)

Will Big Data Force Changes In Online Behavior?

06/22/2017 by Hannes
I took a management course in grad school in 2009, and just about the only thing I remember about it was learning about the Hawthorne effect. This was...
Views: 49, Comments: 6
Last comment 06/22/2017 by MR. Guest

Third-party Spies Could Be Hiding in Your Favorite App

06/15/2017 by MaggieMc
A week or two ago I wrote about personalized internet ads and how third-party cookies mine our data, hopefully to provide us with the perfect ad exper...
Views: 166, Comments: 10
Last comment 06/16/2017 by phoenix911
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WoW Blog (Woman of the Week)

190 blog entries, 535 comments (0 Viewing)

Woman of the Week – Rija Javed

06/20/2017 by lmno24
Rija Javed is currently a senior engineer at Wealthfront, and investment services platform. She leads banking and brokerage platforms and many of the...
Views: 95, Comments: 0

Woman of the Week – Mamie Phipps Clark

06/12/2017 by lmno24
Mamie Phipps Clark was an American social psychologist who focused on the development of self-consciousness of pre-schooled black children. Her work w...
Views: 85, Comments: 0
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Notes & Lines

43 blog entries, 375 comments (0 Viewing)

What Did The Past Sound Like?

06/15/2017 by Hannes
Growing up in the early ‘90s, my family still had a big cream-colored rotary phone stuck to our kitchen wall. At the time I didn’t realize...
Views: 374, Comments: 38
Last comment 06/19/2017 by phoenix911

The Interesting Career and Optical Illusions of Adelbert Ames, Jr.

06/09/2017 by Hannes
While his name is not a household one, the career of Adelbert Ames, Jr. sprawled across physics, ophthalmology, physiology, psychology and philosophy....
Views: 309, Comments: 0
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Defense & Security Technology

116 blog entries, 1655 comments (0 Viewing)

Autonomous, Reusable Experimental Spacecraft Being Developed by Boeing and DARPA

06/05/2017 by Engineering360 eNewsletter
Boeing is collaborating with the U.S. Defense Advanced Research Projects Agency (DARPA) to design and test an experimental spaceplane capable of reach...
Views: 106, Comments: 0

The U.S. Air Force's Secret Spaceplane Touches Down After Two Years in Orbit

05/24/2017 by Engineering360 eNewsletter
Last weekend the U.S. Air Force’s experimental X-37B spaceplane landed at the Shuttle Landing Facility at Kennedy Space Center in Merritt Island...
Views: 83, Comments: 2
Last comment 05/28/2017 by Rixter
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Challenge Questions

353 blog entries, 28480 comments (0 Viewing)

Satellite Struggle: Newsletter Challenge (June 2017)

This month's Challenge Question: Specs & Techs from GlobalSpec: Column 54 through 61 of a TLE set for the IRIDIUM 20 satellite has a value of -21...
Views: 585, Comments: 3
Last comment 05/31/2017 by Rixter

Frustrating Fastballs: Newsletter Challenge (May 2017)

This month's Challenge Question: Specs & Techs from GlobalSpec: Once in a while you may hear a baseball player describe a pitcher’s pitch a...
Views: 2130, Comments: 27
Last comment 06/02/2017 by Randall
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45 blog entries, 407 comments (0 Viewing)

Physicists Create a Fluid With Negative Mass

04/20/2017 by Bayes
One of the interesting things you learn early on in physics is that there is nothing in physics that forbids negative mass values. There has long been...
Views: 746, Comments: 51
Last comment 05/02/2017 by James Stewart

NASA Announcement Today on Potential Habitats for Alien Life

04/13/2017 by Bayes
NASA Announcement Today at 2 p.m. EDT NASA will discuss new results about ocean worlds in our solar system from the agency’s Cassini spacecraft...
Views: 134, Comments: 1
Last comment 04/17/2017 by James Stewart
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"On This Day" In Engineering History

242 blog entries, 842 comments (0 Viewing)

April 19, 1906—The Death of Nobel Prize Laureate Pierre Curie

04/19/2017 by MaggieMc
Thinking back to science class, Curie is a familiar name. Marie Curie is a favorite subject in many courses, especially due to organizing mobile X-ray...
Views: 279, Comments: 2
Last comment 04/20/2017 by MaggieMc

February 17, 1864—The Hunley Sinks the Housatonic

02/17/2017 by Hannes
On this day in 1864, the pioneering Confederate submarine H.L. Hunley rammed and sank the USS Housatonic during the US Civil War. She was the first co...
Views: 417, Comments: 2
Last comment 02/18/2017 by ronc
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Editor's Desk

95 blog entries, 362 comments (0 Viewing)

Engineering Job Growth Shows Positive Outlook

04/08/2017 by Engineering360 eNewsletter
The most recent projections from the U.S. Bureau of Labor Statistics concur that jobs in engineering, and other STEM fields, would likely provide the...
Views: 159, Comments: 0

3D-printed Artwork Created on the International Space Station

02/28/2017 by Engineering360 eNewsletter
The first-ever off-world artwork by Eyal Gever demonstrates what humanity can achieve through positivity, and lightens the mood with laughter in space...
Views: 110, Comments: 0
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Animal Science

238 blog entries, 2171 comments (0 Viewing)

Dogs on the Brain

03/13/2017 by MaggieMc
My good friend just adopted a puppy, and with all the pictures coming my way, I have dogs on the brain. Evidently, so do researchers. Two studies were...
Views: 432, Comments: 11
Last comment 03/16/2017 by James Stewart

Kid’s Best Friend

02/01/2017 by MaggieMc
Last week, “A Dog’s Purpose” was released in theaters. The movie—which “shares the soulful and surprising story of one d...
Views: 261, Comments: 15
Last comment 02/05/2017 by JPool
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The CR4 Admin Blog

101 blog entries, 1491 comments (0 Viewing)

2016 Year in Review & Farewell

03/07/2017 by SavvyExacta
It’s a little late for a 2016 year in review but I thought it was a fitting subject for my final CR4 post. You see, I’m moving on to a new...
Views: 448, Comments: 16
Last comment 03/09/2017 by jdretired

Across Five Years (A CR4 Clip Show)

12/28/2016 by HUSH
It certainly doesn’t happen as much today, in the age of streaming services and binge watching. But up until recently the ‘clip show’...
Views: 240, Comments: 3
Last comment 12/30/2016 by Andrew Westman
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What Is It?

69 blog entries, 1869 comments (0 Viewing)

What is It? for February 2

Do you know what this is? Share your guess! Submitted by CR4 user phph001.
Views: 486, Comments: 9
Last comment 02/07/2017 by ronc
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Abe's Blog

5 blog entries, 69 comments (0 Viewing)

Hypatia of Alexandria – Part 3

11/15/2016 by amichelen
(Note: This is last part of Hypatia of Alexandri) Personal life If we have little knowledge of her scientific achievements, we know even less about...
Views: 323, Comments: 35
Last comment 11/19/2016 by TimONeill

Hypatia of Alexandria – Part 2

11/08/2016 by amichelen
(This is the second part of Hypatia of Alexandria) The ideas developed by the Pythagoreans represent a solid contribution to the scientific knowledge...
Views: 222, Comments: 1
Last comment 11/10/2016 by Bayes
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Rockaholic Adventures

50 blog entries, 611 comments (0 Viewing)

Morphology of Olympus Mons

12/05/2016 by Shawn
After discussing the morphology of Olympus Mons I felt compelled to share my intuition of the shield volcanos existence and morphology strictly throug...
Views: 282, Comments: 5
Last comment 12/08/2016 by Shawn
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Great Engineers & Scientists

145 blog entries, 500 comments (0 Viewing)

The First Lady of Structural Engineering

11/28/2016 by MaggieMc
Elmina Wilson is widely regarded as “the first lady of structural engineering.” Born on September 29, 1870, Elmina came from a family of w...
Views: 396, Comments: 1
Last comment 11/30/2016 by gideon
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65 blog entries, 579 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...
Views: 881, Comments: 20
Last comment 01/25/2017 by MR. Guest
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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...
Views: 520, 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....
Views: 274, Comments: 0
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Other Blog Entries of Interest

Caption This for 3/31/2017

03/31/2017 posted in Caption This!
by lmno24
This week's image: Thanks to Nigh for the submission! Keep in mind we are always looking for submissions, send us photos anytime. Be sure to vote...
Views: 542, Comments: 38
Last comment 04/07/2017 by Randall

Caption This for 3/24/2017

03/24/2017 posted in Caption This!
by MaggieMc
This weeks image: Be sure to vote for your favorite caption! Thanks to Nigh for the submission, we're always looking for more!
Views: 694, Comments: 85
Last comment 04/06/2017 by szwasta

Caption This for 3/17/2017

03/17/2017 posted in Caption This!
by lmno24
This weeks image: Be sure to vote for your favorite caption! Thanks to user sptilton for the submission.
Views: 415, Comments: 20
Last comment 03/20/2017 by Mikerho

Caption This for 3/10/2017

03/10/2017 posted in Caption This!
by MaggieMc
This week's image: Be sure to vote for your favorite caption! Thanks to Solar Eagle for the submission.
Views: 543, Comments: 49
Last comment 03/14/2017 by Mikerho

Caption This for 3/3/2017

03/03/2017 posted in Caption This!
by lmno24
This week's image: Be sure to vote for your favorite caption! Thanks to user Nigh for the submission.
Views: 641, Comments: 52
Last comment 03/10/2017 by MaggieMc