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General Discussion

15965 threads, 302804 comments (10 Viewing)

NASA Reports Undetected Asteroid Explosion in Upper Atmosphere

03/19/2019 by JohnDG
Views: 0, Comments: 0

Exotic 'Second Sound' Phenomenon Observed in Pencil 'Lead'

03/16/2019 by Rixter
Experiments have shown that the heat transfer in graphite and especially in graphene may occur more the way sound travel rather than the slow method...
Views: 235, Comments: 18
Last comment 03/19/2019 by jevanpipitone

Another Boeing 737 Max 8 Goes Down

03/14/2019 by SolarEagle
Looks like pilot error, possibly caused by lack of training on the MCAS system...Failure to comprehend the situation, panic, loss of control.... ht...
Views: 430, Comments: 62
Last comment 03/19/2019 by jadestarcat

ACR Less Than DCR in Litz Wire

03/14/2019 by tws26
I was testing a wireless charging Litz wire coil at work today and realized something strange to me. The formula I know for calculating AC resistance...
Views: 214, Comments: 21
Last comment 03/17/2019 by horace40
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Commercial Space

2036 threads, 3937 comments (0 Viewing)

Water Analyzer

03/14/2019 by shehaagarwal1
Water Analyzer adopts the pulse xenon lamp as light source and the ultraviolet optical fiber spectrometer as detector is capable for real-time gatheri...
Views: 23, Comments: 0

Gas Analyzer

03/14/2019 by shehaagarwal1
Gas Analyzers 8000 is one of the most powerful gas analyzers you can buy. The combination of multi gas emission analysis, differential pressure and te...
Views: 6, Comments: 0

How to Choose the Best Equipment to Perform Dynamic Balancing

03/07/2019 by Juanes33
To choose the best equipment for dynamic balancing we must consider our needs and the option that allows us to finish the job in the easiest and fas...
Views: 38, Comments: 0

Fully Automatic Frozen French Fries Production Line Suppliers

03/06/2019 by fryingmachines
Introduction of Frozen French Fries Production Line: This is a large output production line to produce good quality frozen French fries. It has the a...
Views: 15, Comments: 0
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CR4 Feedback

716 threads, 12324 comments (0 Viewing)
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Section Blogs

The Engineer's Notebook

520 blog entries, 8408 comments (3 Viewing)

Tech workers in China reduced to "hunks," "beauties"

03/16/2019 by M-ReeD
Being capable of doing your job isn’t enough for some tech workers in China who have been reduced to hunks and beauties in advertisements design...
Views: 252, Comments: 14
Last comment 03/19/2019 by IQ

Would You Quit Your Engineering Job to Become a Chocolate Taster?

03/09/2019 by M-ReeD
You love your engineering job. And why wouldn’t you? Engineers are typically in greater demand in the workplace, can command higher salaries and...
Views: 228, Comments: 11
Last comment 03/12/2019 by Torqued
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WoW Blog (Woman of the Week)

257 blog entries, 660 comments (3 Viewing)

National Geographic and Mattel to release line of STEM-related Barbies

02/18/2019 by lmno24
This week, I wanted to share something a little different. My colleague Marie found this excellent news piece on a collaboration between National Geog...
Views: 180, Comments: 4
Last comment 02/23/2019 by SolarEagle

Woman of the Week – Alene Durek

02/11/2019 by lmno24
Alene Durek was the first female admiral in the U.S. Navy after rising her way through the ranks of the Navy Nurse Corps. She was born in Defiance, O...
Views: 153, Comments: 1
Last comment 02/12/2019 by Brave Sir Robin
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Challenge Questions

374 blog entries, 29096 comments (12 Viewing)

Spring Stumper: Newsletter Challenge (March 2019)

This month's IEEE GlobalSpec challenge question is: Left alone, I'm a word with five letters. I'm honest and fair, I'll admit. Rearranged, I'm of n...
Views: 1586, Comments: 13
Last comment 03/06/2019 by StandardsGuy

Onerous Odds: Newsletter Challenge (February 2019)

This month's IEEE GlobalSpec newsletter challenge is: When played separately, the probability of losing each of two different coin-toss games is high...
Views: 837, Comments: 25
Last comment 02/07/2019 by Hannes
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72 blog entries, 682 comments (0 Viewing)

Overweight Spanish Submarines

02/18/2019 by RSBenner
The Spanish submarine navy is small – currently operating only three French-built, Agosta-class, S-70 submarines. During the 1980’s, when...
Views: 509, Comments: 23
Last comment 02/22/2019 by Lo_Volt

“Watch Your Units!” Part 3 – Space Mountain and the Gimli Glider

11/19/2018 by RSBenner
“Watch your units!” Unit conversion errors can be found most anywhere, even in Japan and Canada. For Part 3 of this series, we will look a...
Views: 317, Comments: 8
Last comment 12/10/2018 by Russell McMahon
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Techie Mommy

10 blog entries, 159 comments (0 Viewing)

Backpack Trackers

01/24/2019 by Reese
I recently had a conversation with a colleague who uses a backpack tracker for her first grader. The conversation came up because we were meeting wh...
Views: 427, Comments: 28
Last comment 01/29/2019 by Brave Sir Robin

Kindergarten Homework?

11/15/2018 by Reese
Every day, my five-year-old comes home from kindergarten with math homework. Every. Single. Day. My guess is that all the attention on STEM in rece...
Views: 438, Comments: 33
Last comment 02/14/2019 by BJ-GEEO
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"On This Day" In Engineering History

249 blog entries, 891 comments (0 Viewing)

January 15, 1919 – The Day Boston Drowned in Molasses

01/15/2019 by RSBenner
When I think of molasses, I think of the brown, thick, sticky, syrupy stuff my mother stored in her refrigerator. My father would wait, for what seeme...
Views: 274, Comments: 14
Last comment 01/16/2019 by Jpfalt

December 28, 1973 - The Skylab 4 "Mutiny"

12/28/2018 by Hannes
Forty-five years ago on December 28, 1973, the three-man crew of the Skylab 4 space station made history by effectively taking an unscheduled day off....
Views: 595, Comments: 10
Last comment 01/10/2019 by JWthetech
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What Is It?

72 blog entries, 1928 comments (0 Viewing)

New Year, New 'What Is It?' (January 2019)

We're resolved to stump you with these! This could be our toughest one yet. What is it? (Besides kind of gross-looking.)
Views: 384, Comments: 18
Last comment 01/21/2019 by horace40

Well, What Is It? (December 2018)

Your job is to make educated [or uneducated] guesses at what this, ummm...thing, is. So tell me CR4, what is it?
Views: 405, Comments: 26
Last comment 12/07/2018 by IdeaSmith
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Notes & Lines

47 blog entries, 430 comments (0 Viewing)

The Bed Bug App

01/05/2019 by M-ReeD
Perhaps more practical than the great white shark tracking app I downloaded a few years ago comes a new app that can identify bed bugs and offer sugge...
Views: 301, Comments: 4
Last comment 01/07/2019 by WI Mike

Queen's Home-Engineered Instruments

01/03/2019 by Hannes
Although the British rock band Queen has never totally faded since their 1970 founding, the band and its members have been especially newsworthy latel...
Views: 336, Comments: 2
Last comment 01/07/2019 by BestInShow
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The CR4 Admin Blog

104 blog entries, 1538 comments (0 Viewing)

Editing Time for Posts Increased to 30 Minutes

Yesterday's software update included a change to the amount of time available for users to edit posts. We've increased this time allowance from 10 to...
Views: 74, Comments: 8
Last comment 09/21/2018 by Del the cat

CR4 Broken Link Repair Project

As part of a larger project to eliminate broken links across all IEEE GlobalSpec sites, we've been working on links in CR4 posts and comments. We know...
Views: 291, Comments: 12
Last comment 07/30/2018 by IdeaSmith
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TechnoTourist’s Engineering Expeditions

88 blog entries, 571 comments (0 Viewing)

Thank Goodness for Smartphones?

08/03/2018 by BestInShow
Last week I headed south from Albany to attend my high school reunion. Both my starting point (Albany International Airport) and my destination (McGhe...
Views: 204, Comments: 3
Last comment 08/06/2018 by lyn
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Abe's Blog

10 blog entries, 280 comments (0 Viewing)

Who Will Win the World Cup? Statisticians Take a Guess

06/18/2018 by amichelen
Last week at the start of the Russia 2018 FIFA World Cup, the national team defeated Saudi Arabia 5 to 0 in Moscow, setting in motion the next 30 days...
Views: 217, Comments: 15
Last comment 07/01/2018 by Andy Germany
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Other Blog Entries of Interest

Simple End Mill Sharpening Jig

09/04/2018 posted in Workbench Creations
by Del the cat
I've been having fun with my little mini mill, but I noticed the 10mm end mill was getting a bit worn where I'd been using it to improve the quality o...
Views: 388, Comments: 11
Last comment 09/06/2018 by Del the cat

Caption This for 02/09/2018

02/09/2018 posted in Caption This!
by lmno24
Here's this week's image! I actually found this online the other day and it seemed fitting give that today is National Pizza Day. As always, be sur...
Views: 738, Comments: 26
Last comment 02/14/2018 by MR. Guest

Flight Bow Shooting Machine

01/24/2018 posted in Workbench Creations
by Del the cat
I've been messing around with flight bows and their arrows for some time and it's virtually impossible to get consistent test results. There are so m...
Views: 804, Comments: 34
Last comment 10/16/2018 by Jpfalt

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: 760, 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: 905, Comments: 85
Last comment 04/06/2017 by szwasta