CR4 - The Engineer's Place for News and Discussion ®
Login | Register for Engineering Community (CR4)


05/02/2016 12:00 AM

See all Forum Threads

Latest Forum Threads

 

Can VAN DE GRAAFFF be used to charge batteries?

05/25/2016
posted in Electrical Engineering
by xyz
1. Can VAN DE GRAAFFF generator be used to charge lead acid batteries? 2. Using Van De Graaff generator one can develop large ELECTROSTATIC voltages,...
Views: 1, Comments: 0
Read this Thread | Go to this Forum

 

Old movies vs newer on Youtube

05/24/2016
posted in General Discussion
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: 19, Comments: 2
Last comment 05/24/2016 by jack of all trades
Read this Thread | Go to this Forum

 

If You Look at Old Solid Axle Racers, You'll See Positive Camber

05/24/2016
posted in Transportation
by Michael Rogers
If one looks at pictures of very old solid axle race cars Why would they with a with a great hunk of iron at front need it's front handling degraded b...
Views: 81, Comments: 5
Last comment 05/24/2016 by NeilA
Read this Thread | Go to this Forum

 

I Demand You Replace Me!

05/24/2016
posted in General Discussion
by Fredski
that $15 extortion demand has consequences.http://newsexaminer.net/food/mcdonalds-to-open-restaurant-run-by-robots/ new robots working in harmony at...
Views: 105, Comments: 44
Last comment 05/24/2016 by phoenix911
Read this Thread | Go to this Forum

 

Minor Losses Laminar Flow

05/24/2016
posted in Mechanical Engineering
by ChemistUSX
Hi all, I have the next doubt Is it still valid for laminar flow calculate the head minor losses, hs, like hs = ∑(k*v^2/2g) If it is that wa...
Views: 66, Comments: 4
Last comment 05/24/2016 by phoenix911
Read this Thread | Go to this Forum

 

Space Shuttle Tile Material

05/24/2016
posted in General Discussion
by Bayes
This is pretty amazing....really shows how incredibly dissipative the Space Shuttle Thermal Tile material was. https://www.youtube.com/watch?v=FCbm6v...
Views: 85, Comments: 5
Last comment 05/25/2016 by NeilA
Read this Thread | Go to this Forum

 

Cold Sores

05/24/2016
posted in BioMech & BioMed
by Codemaster
When I was a kid in 1950s rural UK, a cold sore was known locally as a pig's foot. They were quite impressive (and ugly), often as big as the end of a...
Views: 83, Comments: 7
Last comment 05/24/2016 by James Stewart
Read this Thread | Go to this Forum

 

Metal Detector Problem

05/24/2016
posted in Electrical Engineering
by Goyalashutosh
Sir, I am working in the food company. i have got the metal detector installed on the filling lines.The problem is that there are two setting in that...
Views: 103, Comments: 9
Last comment 05/24/2016 by Goyalashutosh
Read this Thread | Go to this Forum

 

Jerk or no jerk at all

05/24/2016
posted in Mechanical Engineering
by Mr. small
I am mind struck by rubbles and ditches on a rough road. Is there any good use of jerking?
Pathfinder Tags: Jerk
Views: 147, Comments: 10
Last comment 05/25/2016 by dkwarner
Read this Thread | Go to this Forum

 

Different Transformers Voltage

05/23/2016
posted in Electrical Engineering
by omar.algariri
Please what will happen in the low voltage side if some difference in voltage line before feeders say one transformer 400v and the other 395 or little...
Views: 138, Comments: 5
Last comment 05/24/2016 by RAMConsult
Read this Thread | Go to this Forum

 

Biodegradable Six-Pack Ring

05/23/2016
posted in General Discussion
by BestInShow
Has the CR4 community heard this story, about a Florida brewery that's created a biodegradable six-pack ring using brewery waste? I like that it's bio...
Pathfinder Tags: biodegradable six-pack ring
Views: 131, Comments: 13
Last comment 05/24/2016 by adreasler
Read this Thread | Go to this Forum

 

The REAL Valkyrie

05/23/2016
posted in Aerospace
by Fredski
Roger thinks this is a clumsy robot, It was a plane long before that https://www.nasa.gov/centers/armstrong/news/FactSheets/FS-084-DFRC.html
Views: 132, Comments: 9
Last comment 05/24/2016 by James Stewart
Read this Thread | Go to this Forum

 

Clock That Runs "Backwards"

05/23/2016
posted in General Discussion
by lyn
OK, I got my backwards running clock over the weekend. Two things puzzle me now. One of the boys noted that it ran "counterclockwise". 1. The cl...
Views: 494, Comments: 50
Last comment 05/24/2016 by JohnDG
Read this Thread | Go to this Forum

See all Forum Threads

Recent Active Threads

 

What is this Wiring Harness Connection Called

05/19/2016
posted in General Discussion
by phoenix911
Ok, First a little background. I'm just finishing putting in a new carpet set on my 86' Porsche 911 Targa Carrera. When I was connecting up all the...
Views: 530, Comments: 64
Last comment 05/24/2016 by phoenix911
Read this Thread | Go to this Forum

 

Power Plant Parallel Operation

05/18/2016
posted in Electrical Engineering
by coolyaar
we are planning to build a 25MWe coal based power plant for our bulk consumers. the consumers are presently being fed from the 132KV grid station thro...
Views: 358, Comments: 48
Last comment 05/24/2016 by James Stewart
Read this Thread | Go to this Forum

 

What is This?

05/18/2016
posted in General Discussion
by NotUrOrdinaryJoe
Ok, Fredsky! I've been meaning to give you a run for your money for quite a while. This is hanging on my wall at home. The loop is roughly about 1 fo...
Pathfinder Tags: what is it
Views: 889, Comments: 47
Last comment 05/23/2016 by horace40
Read this Thread | Go to this Forum

 

Timelines - Good Idea or Not?

05/20/2016
posted in General Discussion
by NotUrOrdinaryJoe
They have been around for a long time. They are useful for things that are done repeatedly or at least systematically. Why is it that in engineering...
Pathfinder Tags: madness Timelines
Views: 264, Comments: 34
Last comment 05/23/2016 by Casper71
Read this Thread | Go to this Forum

See all Forum Threads
  

Latest News from Engineering360

Latest News
News for 05/23/2016
News for 05/22/2016
News for 05/20/2016
News for 05/19/2016

Advertisement

See all Blog Entries

Latest Blog Entries

Appalachian Basin Producing More Gas than Ever

05/25/2016 posted in Oil & Gas Technology
by Engineering360 eNewsletter
Low-cost Appalachian shale gas production has enabled the oldest U.S. natural gas producing area to re-establish itself as a supply juggernaut. Signi...
Views: 3, Comments: 0
Read this Blog Entry | Go to this Blog

Melding IoT with DIY

05/24/2016 posted in Sensors & Switches
by Engineering360 eNewsletter
Researchers at MIT's Media Lab mashed together the concepts of ubiquitous sensing, flexible printed electronics, and sensor networks, embedding them...
Views: 12, Comments: 0
Read this Blog Entry | Go to this Blog

10 Unusual 1950s-1970s GM Accessories

05/24/2016 posted in Hemmings Motor News Blog
by dstrohl
In 1958, Pontiac's optional "Sportable" transistor AM radio could be slid out from the dash to be taken anywhere. It operated on its own batterie...
Pathfinder Tags: accessory classic auto top 10
Views: 69, Comments: 2
Last comment 05/24/2016 by Rixter
Read this Blog Entry | Go to this Blog

Flexible Silicon Transistors Set New Speed Record

05/24/2016 posted in Electronic Product Design
by Engineering360 eNewsletter
Using low-temperature processes to pattern circuitry on single-crystalline silicon placed on a flexible polyethylene terephthalate (PET) substrate...
Views: 29, Comments: 1
Last comment 05/24/2016 by Brave Sir Robin
Read this Blog Entry | Go to this Blog

And You Thought Bootleggers All Drove Fords…

05/23/2016 posted in Hemmings Motor News Blog
by dstrohl
With prohibition, breweries like Anheuser-Busch had to figure out how to turn their beer-making facilities into factories for non-alcoholic produc...
Pathfinder Tags: beer bootlegging classic auto
Views: 198, Comments: 7
Last comment 05/24/2016 by tcmtech
Read this Blog Entry | Go to this Blog

What Makes Your Smartphone Smart?

05/23/2016 posted in Electronic Components
by Engineering360 eNewsletter
Typically, a smartphone consists of components like microprocessors, system-on-a-chip (SoC) IC, cameras, sensors, display, operating system (OS),...
Views: 115, Comments: 6
Last comment 05/24/2016 by 70AARCuda
Read this Blog Entry | Go to this Blog

Mushrooms a Magic Building Insulation Alternative

05/22/2016 posted in Building & Design Blog
by Engineering360 eNewsletter
Styrofoam has been one of the most trusted building insulation materials since the late 1940s. The blue foamed, extruded polystyrene product posse...
Views: 261, Comments: 5
Last comment 05/23/2016 by Brave Sir Robin
Read this Blog Entry | Go to this Blog

Inflatable Habitats to Expand Space Research

05/21/2016 posted in Aerospace Blog
by Engineering360 eNewsletter
Recently, SpaceX delivered an inflatable modular habitat to the International Space Station (video). Developed by Bigelow Aerospace, the BEAM - for Bi...
Views: 116, Comments: 6
Last comment 05/24/2016 by adreasler
Read this Blog Entry | Go to this Blog

Grow Plants in Rocks! Innovative Horticultural Substrates

05/20/2016 posted in The Engineer's Notebook
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
Read this Blog Entry | Go to this Blog

Sensing Water Leaks by Their Sound

05/20/2016 posted in Acoustics & Audio Technology
by Engineering360 eNewsletter
In a world suffering water shortages that promise only to get worse, simply detecting and correcting leaks in existing infrastructure can improve...
Views: 94, Comments: 4
Last comment 05/24/2016 by Rixter
Read this Blog Entry | Go to this Blog

Caption This for 5/20/16

05/19/2016 posted in Caption This!
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
Read this Blog Entry | Go to this Blog

Gallery – 2016 Hemmings Motor News Cruise-Ins Begin

05/19/2016 posted in Hemmings Motor News Blog
by dstrohl
To some, it's the budding of trees and the blooming of flowers (often accompanied by the popping of allergy pills), while to others it's the retur...
Pathfinder Tags: classic auto cruise-in display
Views: 121, Comments: 2
Last comment 05/24/2016 by Bayes
Read this Blog Entry | Go to this Blog

A City Car for the Masses

05/19/2016 posted in Editor's Desk
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
Read this Blog Entry | Go to this Blog

Heavy Lifting in Tight Spaces

05/19/2016 posted in Construction Tools & Equipment
by Engineering360 eNewsletter
Commercial job sites with limited space and weight restrictions can now take advantage of an eight-axle all-terrain crane. Unveiled at the recent Baum...
Views: 136, Comments: 0
Read this Blog Entry | Go to this Blog

High-Stakes Racing is the Newest Drone Application

05/18/2016 posted in Wireless Technology Blog
by HUSH
Even as an adult, I love small-scale radio-controlled vehicles. As a kid I had tons of RC cars, trucks and even a hovercraft. Today, my RC collectio...
Pathfinder Tags: drone racing radio control RF
Views: 145, Comments: 11
Last comment 05/20/2016 by Mikerho
Read this Blog Entry | Go to this Blog

New Bill Aims to Formalize Ethanol Blend Wall, Cap Blending at E10

05/18/2016 posted in Hemmings Motor News Blog
by dstrohl
bill introduced in Congress this week promises to roll back current ethanol blending requirements and may even curtail the spread of E15 through t...
Pathfinder Tags: auto fuel legislation
Views: 156, Comments: 17
Last comment 05/19/2016 by adreasler
Read this Blog Entry | Go to this Blog

See all Blog Entries


Advertisement

New Privacy Policy

We have adopted new policies. Please read each one carefully.

OK