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08/15/2015 12:00 AM

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General Discussion

13930 threads, 250336 comments (22 Viewing)

did MIT just change batteries as we've known them?

08/30/2015 by Fredski
for years I've waited for news like this. my pals @MIT think they've cracked the code with anew electrolyte that should last many thousands of charges...
Views: 10, Comments: 2
Last comment 08/30/2015 by Murdacay

see this next month

08/30/2015 by Fredski
Views: 13, Comments: 5
Last comment 08/30/2015 by Usbport

It is best that they are not, especially

08/30/2015 by jakeskumar
It is best that they are not, especially if you plan a hairstyle and for an important event. When you have secured the locks, then you can decorate...
Views: 9, Comments: 2
Last comment 08/30/2015 by Anonymous Poster


08/29/2015 by fliptop427
If you like to see what the others are doing.
Views: 42, Comments: 5
Last comment 08/30/2015 by Tornado

Parts Cleaner

08/29/2015 by fliptop427
I like to find what others have problems with. At my local returned goods discount store I found a $1500.00 part tumbler. Up on inspection I found 2...
Views: 45, Comments: 1
Last comment 08/30/2015 by Del the cat
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Commercial Space

1877 threads, 3562 comments (0 Viewing)

Material Challenge for Drag Reduction

08/26/2015 by Robert lee
The Engineered Surfaces, Materials and Coatings (ESMC) Team, under contract with the Air Force Research Laboratory (AFRL), is looking for innovative...
Pathfinder Tags: aircraft drag reduction material science materials
Views: 123, Comments: 12
Last comment 08/28/2015 by Robert lee

Now Casting: Designers, Engineers, Inventors and Other ‘Makers!’

08/24/2015 by AGMCasting
I'm a Casting Producer working with Intel looking for innovators who are creating the next big wearable or smart-connected device. We are looking nati...
Pathfinder Tags: burnett engineer Intel inventor Maker ...
Views: 109, Comments: 18
Last comment 08/25/2015 by Fredski

Linseis from Germany

08/20/2015 by Linseis
Hello everybody, I would like to give a short presentation of our company. We are Linseis from Germany. Besides our Headquarters in Selb we also ha...
Views: 29, Comments: 0

Structural Engineering Services

08/18/2015 by koninpro
Steel Construction modelling , analysis,design and drawing-detailing services is provide of a Structural Engineering and Designing Workshop.
Pathfinder Tags: Structural Engineering and Designing Services
Views: 107, Comments: 13
Last comment 08/18/2015 by Tornado

What Do You Know About Honeycomb Girder Launching Gantry?

08/16/2015 by zzhz
Honeycomb girder launching gantry is specially developed by ZZHZ for highway bridge construction. And as a patent product, below content you have to l...
Pathfinder Tags: honeycomb girder launching gantry
Views: 56, Comments: 1
Last comment 08/16/2015 by Tornado
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CR4 Feedback

645 threads, 11400 comments (0 Viewing)

Providing Web-Link for Details While Replying in CR4

08/29/2015 by dhayanandhan
Whenever, a CR4 Member is asking a question, many members provide/answer in detail and provide the web-link also starting with www. or http: etc. I us...
Views: 113, Comments: 13
Last comment 08/30/2015 by IdeaSmith

Shortness of Breath

08/28/2015 by sahdee
i was subscribed a discussion about shortness of breath.i received many e mails.but here is no discussion in my account about this topic.where and how...
Views: 75, Comments: 4
Last comment 08/28/2015 by Tornado

Ignore Feature

08/23/2015 by Fredski
personally I'd love to see our little site add an Ignore feature so that people that don't care for one another can simply click an annoyance away. I...
Views: 138, Comments: 14
Last comment 08/26/2015 by IdeaSmith

Spam Deluge

08/19/2015 by Tonymech
Hi all About 2 days ago I was notified emails supposedly from my address were being received by people on my address book list. They contained links...
Pathfinder Tags: email spam
Views: 251, Comments: 15
Last comment 08/20/2015 by Tonymech

Forum Going Downhill

08/12/2015 by ronseto
This forum appears to be going downhill. Topics are being posted that have nothing remotely to do with engineering; (ie: suction cups). Although they...
Views: 162, Comments: 11
Last comment 08/13/2015 by Fredski
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Section Blogs

Defense & Security Technology

91 blog entries, 1428 comments (0 Viewing)

Russia Ramps Up Baltic Air Incursions

08/28/2015 by IHS Engineering360 eNewsletter
Last month saw a record number of intercepts by NATO fighters of Russian military aircraft over the Baltic Sea. Large formations totaling 22 aircraft...
Views: 144, Comments: 13
Last comment 08/29/2015 by Anonymous Hero

Chinese Fighter Sensors Shown

08/17/2015 by IHS Engineering360 eNewsletter
China's Jiangsu A-Star Aviation Industries Company unveiled new combat aircraft electro-optical systems at a recent "civil-military integration" trade...
Views: 236, Comments: 4
Last comment 08/18/2015 by Anonymous Hero

Japan Schedules Patrol Plane Tropical Tests

08/02/2015 by IHS Engineering360 eNewsletter
Japan is sending two development models of its Kawasaki P-1 patrol aircraft to Djibouti for testing under "tropical and desert" conditions. These will...
Views: 162, Comments: 1
Last comment 08/03/2015 by Unredundant
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Caption This!

322 blog entries, 13989 comments (0 Viewing)

Caption This for 08/28/15

08/27/2015 by LakeGrl
This weeks image: Be sure to vote for your favorite caption! Thanks to Nigh for submitting this image.
Pathfinder Tags: armed engineering engineering images funny images
Views: 413, Comments: 40
Last comment 08/29/2015 by Rixter

Caption This for 08/21/15

08/20/2015 by LakeGrl
This weeks image: Be sure to vote for your favorite caption! Thanks to SolarEagle for submitting this image.
Pathfinder Tags: aliens engineering engineering images funny images new species
Views: 586, Comments: 30
Last comment 08/26/2015 by Unredundant

Caption This for 08/14/15

08/13/2015 by LakeGrl
This weeks image: Be sure to vote for your favorite caption! Thanks to Loupy for submitting this image.
Pathfinder Tags: electrical engineering engineering engineering images funny images
Views: 720, Comments: 64
Last comment 08/22/2015 by MR. Guest
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Editor's Desk

18 blog entries, 77 comments (0 Viewing)

Knowledge Management: Using Social Media to Drive the Learning Organization

08/27/2015 by wagman262
I hope you can take 60 minutes to take part in this upcoming Engineering360 webinar on knowledge management and social media tools. Should be very inf...
Views: 85, Comments: 0

Interest in CHP Is Growing as Energy Efficiency Goals Expand

08/25/2015 by wagman262
Contributing Editor Brad Buecker of Kiewit Engineering offers a concise overview of combined heat and power systems, and offers a nod to the importanc...
Views: 117, Comments: 0

Fleetwide Vehicle Fuel Efficiency

08/20/2015 by wagman262
Stalled! That's what U Michigan researchers say has essentially happened to fleetwide fuel efficiency between 1991-2013. Read their explanation for wh...
Views: 195, Comments: 3
Last comment 08/24/2015 by 70AARCuda
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The CR4 Admin Blog

79 blog entries, 1324 comments (0 Viewing)

Want to Talk Politics, Religion, and Other Off-Topic Subjects?

08/24/2015 As the 2016 political season starts to gear up in the US, we are beginning to see an increase in the number of political topics in the news. Add that...
Views: 179, Comments: 0

Sponsored Posts Now Live

08/13/2015 by SavvyExacta
I introduced the concept of sponsored posts about a month ago. You can read that post here. While sponsored posts have been appearing on CR4 for the...
Views: 203, Comments: 0

Sponsored Blog Posts on CR4

07/10/2015 As I mentioned a while back, sponsored posts will soon appear on CR4. The first one will be launched on Sunday July 12. When launching this opportuni...
Views: 345, Comments: 15
Last comment 08/24/2015 by SavvyExacta
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Challenge Questions

330 blog entries, 27650 comments (0 Viewing)

Coin Flips for Cash: Newsletter Challenge (August 2015)

08/01/2015 This month's Challenge Question: Specs & Techs from IHS Engineering360: Try this game: you flip a coin until you get a head and you win one doll...
Pathfinder Tags: challenge question
Views: 1778, Comments: 22
Last comment 08/25/2015 by Codemaster

Apollo 11 Communications Log- Gimbal Lock: Newsletter Challenge (July 2015)

07/01/2015 This month's Challenge Question: Specs & Techs from IHS Engineering360: CapCom - "Columbia, Houston. We noticed you are maneuvering very close t...
Pathfinder Tags: challenge questions NASA
Views: 2467, Comments: 11
Last comment 07/21/2015 by Halsey

Airbag Physics: Newsletter Challenge (June 2015)

06/01/2015 This month's Challenge Question: Specs & Techs from IHS Engineering360: This month we had the largest automotive recall in U.S. history: 33.8 mi...
Pathfinder Tags: challenge question
Views: 1961, Comments: 27
Last comment 06/06/2015 by WilhelmHKoen
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Physics In Film

10 blog entries, 89 comments (0 Viewing)

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: 277, Comments: 4
Last comment 07/31/2015 by BabyGuinness

Medieval Physics - Siege Engines

09/03/2014 by cheme_wordsmithy
I don't think a blog series titled Medieval Physics would be complete without a discussion of siege engines. Siege engines were the machines that made...
Views: 746, Comments: 10
Last comment 09/09/2014 by SavvyExacta
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Roger's Equations

142 blog entries, 1627 comments (0 Viewing)

EM Drive - German Scientists Reproduce NASA Results

07/28/2015 by Roger Pink
New Physics or Complicated Error? About three months ago I wrote a blog entry about NASA's investigation of an EM drive that produced results that se...
Views: 415, Comments: 22
Last comment 07/31/2015 by Brave Sir Robin

Weyl Fermions

07/27/2015 by Roger Pink
I came across this article and thought I would pass it along. It's a great breakthrough, with powerful implications for computing. - Weyl f...
Views: 168, Comments: 3
Last comment 07/30/2015 by Tom_Consulting

Pluto Flyby - New Horizons Just Finished Closest Approach

07/14/2015 by Roger Pink
Leaving Pluto - An Hour After Closest Encounter After 3462 days in space, New Horizons has finally reached its closest approach to Pluto! Roughly a...
Views: 319, Comments: 11
Last comment 07/19/2015 by Roger Pink
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Notes & Lines

22 blog entries, 161 comments (0 Viewing)

Creative AI: Can Computers Create?

07/28/2015 by Jonathan Fuller
Artificially intelligent systems are capable of many human-like behaviors. At least on a surface-level, they can think, learn, speak, read, and simu...
Pathfinder Tags: aaron artificial intelligence creative ai
Views: 229, Comments: 22
Last comment 07/31/2015 by Unredundant

Your Kitchen Table Is Now A Musical Instrument

06/25/2015 by Jonathan Fuller
Pocket-sized instruments have always appealed to musicians. Pulling out a harmonica, xaphoon, or ocarina and playing on the go seems like the pinna...
Pathfinder Tags: electronic music tonetree
Views: 294, Comments: 5
Last comment 06/30/2015 by IanR

RIP Grooveshark

05/11/2015 by Jonathan Fuller
Many people of a certain age (mine, specifically) will likely tell tales about the brief Golden Age of Napster to their children and grandchildren....
Pathfinder Tags: dcma digital copyright grooveshark P2P
Views: 212, Comments: 2
Last comment 05/13/2015 by tcmtech
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What Is It?

67 blog entries, 1842 comments (0 Viewing)

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: 567, 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: 557, Comments: 36
Last comment 07/27/2015 by simonsd

What is It? for July 12

07/12/2015 What is it? Share your guess in the comments below! Thanks to CR4 member Dan A for sharing this image.
Pathfinder Tags: what is it
Views: 547, Comments: 36
Last comment 07/14/2015 by phoenix911
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Animal Science

216 blog entries, 1972 comments (0 Viewing)

The Summer of the Shark

07/15/2015 by HUSH
It's that time of the year where people are more interested in getting out of their office or home and to the pool. Or if you live in a coastal area...
Pathfinder Tags: beach protection shark technology
Views: 282, Comments: 0

Analysis of a Champion: American Pharoah

06/09/2015 by SavvyExacta
American Pharoah has won the Triple Crown! This headline has been shouted at us since he became the first horse in 37 years to accomplish the feat....
Pathfinder Tags: horse racing
Views: 211, Comments: 5
Last comment 06/09/2015 by JBTardis

Brontosaurus vs Apatosaurus

04/24/2015 by Chelsey H
When I was little one of my favorite movies was "We're Back: A Dinosaur Story". It's a ridiculous cartoon about dinosaurs showing up in a big city....
Views: 282, Comments: 1
Last comment 04/24/2015 by SavvyExacta
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The Engineer's Notebook

340 blog entries, 5443 comments (0 Viewing)

2038: Y2K 2.0?

07/06/2015 by Jonathan Fuller
Who could forget Y2K? I have fond memories of counting down to midnight on January 1, 2000 prepared to witness planes fall from the sky and neighbor...
Pathfinder Tags: 2038 problem date bug Y2K
Views: 697, Comments: 2
Last comment 07/08/2015 by Kaplin

Speaking of Social Robots...

06/18/2015 by Jonathan Fuller
The fact that we humans have a predilection for sociable robots is pretty well mirrored in our science fiction creations. Rosie's smart-aleck commen...
Pathfinder Tags: paro pepper social robots therapy robots
Views: 241, Comments: 4
Last comment 06/27/2015 by Wal

The Hyperloop Lives

06/09/2015 by HUSH
If you ever compose a blog for CR4, prepare to be told you're wrong. It has happened to me dozens of times and it's somewhat of an 'earned stripe.'...
Pathfinder Tags: atmospheric railway Elon Musk future hyperloop
Views: 271, Comments: 7
Last comment 08/23/2015 by 129CBRider
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Relativity and Cosmology

145 blog entries, 3786 comments (0 Viewing)

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: 262, Comments: 0

How Aeons turned into Zeons

05/12/2015 by Jorrie
Quite a lot has been written on this CR4 Blog about the standard Lambda-Cold-Dark Matter (LCDM) cosmological model and its equations. Arguably the...
Pathfinder Tags: cosmological constant cosmology expansion
Views: 253, Comments: 0

HTRN's Cosmology Questions

01/17/2015 by Jorrie
in HTRN's thread about the rate of bubble rise and expansion in a fluid, he also saw analogies to cosmological expansion and he speculated: "Maybe we...
Pathfinder Tags: cosmological constant cosmology expansion
Views: 375, Comments: 16
Last comment 02/10/2015 by HiTekRedNek
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62 blog entries, 525 comments (0 Viewing)

Big Bets Lost on Vegas Hotel

04/23/2015 by HUSH
If you're in Las Vegas, you're probably going to gamble. The city is well known for its attractions, from the resorts to the shopping to the shows t...
Pathfinder Tags: architecture las vegas structural engineering
Views: 419, Comments: 2
Last comment 04/25/2015 by Rixter

Safety Concerns of Oil by Rail

10/30/2014 by cheme_wordsmithy
Historically, most oil in the U.S. has been transported via pipeline. In 2008, the U.S. saw the rise of a new alternative for crude oil shipment - rai...
Views: 462, Comments: 19
Last comment 02/23/2015 by machia0705
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Rockaholic Adventures

45 blog entries, 573 comments (0 Viewing)

Independent Party on Disappointment Cleaver – Part II

02/17/2015 by Shawn
The historic ratio of independent parties to guided ascents of Mt. Rainier holds steady at roughly 45% to 55%. In search of a true sense of accompl...
Pathfinder Tags: Disappointment Cleaver Mt. Rainier
Views: 293, Comments: 0

Independent Party on Disappointment Cleaver - Part I

02/06/2015 by Shawn
Mt. Rainier via Disappointment Cleaver is a formidable expedition on glaciated terrain for novice mountaineers. It is a challenging class III climb...
Pathfinder Tags: Disappointment Cleaver Mt. Rainier
Views: 156, Comments: 2
Last comment 02/09/2015 by Shawn

Are Energized Fluids the Economic Alternative?

10/03/2014 by Shawn
Suppliers, researchers, and service companies working in unconventional oil and natural gas plays look to displace large volumes of hydraulic fract...
Pathfinder Tags: energized fluids energized foams energized fracture treatments
Views: 326, Comments: 0
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The Standard

4 blog entries, 13 comments (0 Viewing)

New ISO Energy Management Standard Released

11/18/2014 by KevinCassidy
The International Organization for Standardization (ISO) has released the new ISO 50003:2014 Energy management systems - Requirements for bodies provi...
Pathfinder Tags: ANSI audit certification Energy energy standards ...
Views: 357, Comments: 0

Follow up: Women's Lacrosse Headgear Standard Set for Second Ballot

11/13/2014 by KevinCassidy
I wrote about the debate between the Florida High School Athletic Association and US Lacrosse over the use of helmets during high school girls lacross...
Pathfinder Tags: ANSI ASTM eye protection face florida ...
Views: 149, Comments: 1
Last comment 01/28/2015 by sporteyes

Don't Forget to "Look Before You Pump"

11/05/2014 by KevinCassidy
The Outdoor Power Equipment Institute (OPEI) has been active in educating consumers about the variety of fuels available at the pump, and how to ident...
Pathfinder Tags: ANSI automotive E10 E15 equipment ...
Views: 249, Comments: 8
Last comment 11/08/2014 by tcmtech
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Other Blog Entries of Interest

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: 482, 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: 876, 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: 970, 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: 1039, Comments: 13
Last comment 07/14/2013 by lyn

Del's Lathe Refurb' pt 3

06/20/2013 posted in Workbench Creations
by Del the cat
I've done the back gears, I could have bought new gears, but I thought I'd 'make do and mend'. I replaced the small cog with a slightly larger one...
Views: 790, Comments: 16
Last comment 06/22/2013 by Del the cat

Del's Lathe Refurb' pt 2

06/10/2013 posted in Workbench Creations
by Del the cat
The lathe came without any change wheels or the bracket to attach them, and one of the odd things about the lathe is the lead screw runs back to front...
Views: 624, Comments: 11
Last comment 06/25/2015 by Del the cat