03/02/2022 4:00 PM
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Bright flash in February was Black Hole Jet pointed at earth

12/04/2022
posted in General Discussion
by Rixter
This is kind of interesting. A bright flash detected in February was apparently a jet from a black hole coincidentally pointed at earth. "On February...
Views: 12, Comments: 2
Last comment 12/05/2022 by PWSlack
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How do you measure eccentricity?

12/03/2022
posted in General Discussion
by phph001
A full-size croquet ball is spherical and symmetrical, so on a level surface it runs in a straight line. Recently, however, I have acquired a collecti...
Views: 115, Comments: 23
Last comment 12/05/2022 by SolarEagle
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Fire Extinguisher vs. Electronics??

12/02/2022
posted in General Discussion
by Sid_Sidow
I've worked on hospital laboratory equipment for 40+ years and this is a first for this question........ Received an email from a long-time Customer...
Views: 149, Comments: 9
Last comment 12/05/2022 by steve45
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Challenge question.

12/01/2022
posted in General Discussion
by Randall
In the absence of an official challenge question (so far), you might like to try this. Make 24 using three d s where d is a digit from 1 to 9. So th...
Views: 98, Comments: 16
Last comment 12/03/2022 by Tornado
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60A rack mount PDU

11/29/2022
posted in Electrical Engineering
by EV1guy2004
Hi, I am looking for a PDU with breakers to power and protect various plug in equipment, We would like to pull out the old system, in house engineere...
Views: 98, Comments: 6
Last comment 11/30/2022 by Randall
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Is there a fairly good smart standing wheelchair ?

11/29/2022
posted in General Discussion
by nzur
Hi, I am looking for a self-driving (smart) standing wheelchair (or robotic system), which can change its posture to standing/tilting/reclining etc.....
Views: 137, Comments: 4
Last comment 12/03/2022 by phph001
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Common Performance Indicators of Autonomous Robots

11/28/2022
posted in Mechanical Engineering
by nzur
Hey folks, Could you please suggest any general performance indicator for evaluating autonomous robots like an Autonomous Wheelchair? What I mean by...
Views: 128, Comments: 5
Last comment 11/29/2022 by vsar
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Inverted Spillway on a Lake

11/26/2022
posted in General Discussion
by HiTekRedNek
An inverted spillway on a lake takes water from below the surface and removes sediment from the bottom.This allows fresh water to replace the stagnant...
Views: 340, Comments: 19
Last comment 12/03/2022 by redfred
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The Evinci Microreactor

11/25/2022
posted in General Discussion
by SolarEagle
..."My visit came on the heels of Westinghouse’s $7.9 billion sale to Cameco and Brookfield Renewable Partners. The transaction, expected to b...
Views: 219, Comments: 6
Last comment 11/26/2022 by SolarEagle
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Restriction in flow in Penstock

11/23/2022
posted in Civil Engineering
by jan63
Working in a hydel power station.head is 430 ft.We had an irrigation tunnel.The flow of the tunnel was through outlet gates and with full head and ful...
Views: 192, Comments: 13
Last comment 11/26/2022 by HiTekRedNek
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Changing the single bus Panel to double ended with bus tie

11/22/2022
posted in Electrical Engineering
by Anonymous Poster
Is it true that installing a tie breaker reduces the fault current?
Views: 96, Comments: 8
Last comment 11/28/2022 by jmueller
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Real shot of high power dpss lasers

11/17/2022
posted in Electrical Engineering
by Anonymous Poster
A diode-pumped solid-state laser (DPSSL) is a solid-state laser made by pumping a solid gain medium, for example, a ruby or a neodymium-doped YAG crys...
Views: 90, Comments: 3
Last comment 11/19/2022 by SolarEagle
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Open Diff: Has a Car Community Ever Influenced Your Perception of a Particular Car?

12/05/2022 posted in Hemmings Motor News Blog
by dstrohl
Even though we, as old-car enthusiasts, often toil late into the night alone in our own garages, with nothing but our own voices and the zip-zip-zip o...
12/05/2022 Views: 7, Comments: 0
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How Hard Can it be to Modernize the Dodge Magnum? Short Answer: Hard

12/01/2022 posted in Hemmings Motor News Blog
by dstrohl
Anybody who takes the time to appreciate the 2005-2008 Dodge Magnum inevitably asks the question why Chrysler and its numerous parent companies since...
12/01/2022 Views: 92, Comments: 0
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Tech 101: Fuel-line Hose -- What You Should and Should Not Use

11/30/2022 posted in Hemmings Motor News Blog
by dstrohl
Most vehicle repair shops are encountering a lot of fuel-line-related issues since the introduction of ethanol into America’s pump gas. Because...
11/30/2022 Views: 111, Comments: 0
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Dominoes on a Checkerboard (Dec. 2022 Challenge Question)

11/30/2022 posted in Challenge Questions
Say you have a standard 8 x 8 checkerboard, which alternates checker squares in red and black, totaling 64 total squares. Each is 1 in^2. You must ph...
11/30/2022 Views: 112, Comments: 11
Last comment 12/02/2022 by Printmeister
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Life is Short, but VWs Seem to Last Forever, which is How One Family Got to Enjoy a 1970 Type 2

11/29/2022 posted in Hemmings Motor News Blog
by dstrohl
Unless you're a pharaoh building a pyramid, you can't take any of it with you when you go, so why not make sure it all goes to somebody who will enjoy...
11/29/2022 Views: 56, Comments: 0
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Old or New Four-Wheel-Drive Systems: Which is Better?

11/28/2022 posted in Hemmings Motor News Blog
by dstrohl
Over the years, off-road capable SUVs and trucks have become complex machines. From electronic differentials and transfer cases to full-time all-wheel...
11/28/2022 Views: 140, Comments: 1
Last comment 11/29/2022 by PWSlack
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Hudson's Step-Down Styling was Revolutionary. So Why Didn't Certain Other Carmakers Use It?

11/24/2022 posted in Hemmings Motor News Blog
by dstrohl
In case you’re wondering, the title of today’s column is not about me stepping down from my position here at good old HCC. Rather, it has...
11/24/2022 Views: 123, Comments: 0
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Ford’s 2.3-Liter EcoBoost Ushered the Mustang SVO into the 21st Century

11/23/2022 posted in Hemmings Motor News Blog
by dstrohl
Today it seems like Ford’s Special Vehicle Operations (SVO) was playing the long game when it created the 1984-’86 Mustang SVO: a balanced...
11/23/2022 Views: 85, Comments: 0
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Nine (More) Reasons Why Ohio May Be the Most Important State in U.S. Auto History

11/22/2022 posted in Hemmings Motor News Blog
by dstrohl
Earlier this month, to celebrate National Ohio Day, Paul Sakalas at Summit's OnAllCylinders blog did something that this Buckeye State native should h...
11/22/2022 Views: 97, Comments: 0
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Why Jay Leno's Steam Car Caused a Gasoline Fire

11/21/2022 posted in Hemmings Motor News Blog
by dstrohl
As we've all learned this week, following Jay Leno's widely reported incident with a steam car that left part of his face burned, steam cars often use...
11/21/2022 Views: 195, Comments: 2
Last comment 11/22/2022 by PWSlack
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Carspotting: Brooklyn, 1982

11/17/2022 posted in Hemmings Motor News Blog
by dstrohl
Date: 1982 Location: Brooklyn, New York Source: Jet Lowe, via Historic American Engineering Record/Library of Congress What do you see here?
11/17/2022 Views: 76, Comments: 4
Last comment 11/18/2022 by Brave Sir Robin
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Open Diff: What's Your Against-Type Dream Car?

11/16/2022 posted in Hemmings Motor News Blog
by dstrohl
We all have a type when it comes to cars. Some people narrow their focus down to one particular generation of one particular model. Others are happy s...
11/16/2022 Views: 77, Comments: 1
Last comment 11/20/2022 by Sapling
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I Love This Tool: Fix Manufacturing Eflator

11/15/2022 posted in Hemmings Motor News Blog
by dstrohl
Now and again, your car’s tires lose air. Just a pound or two here and there. If you have an air compressor in your garage, it’s probably...
11/15/2022 Views: 190, Comments: 8
Last comment 11/21/2022 by Nigh
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How to Get Started Replacing and Welding Body Panels

11/14/2022 posted in Hemmings Motor News Blog
by dstrohl
Sheetmetal fabrication and replacement mystifies a lot of us because it takes talent and patience to achieve the desired results. It also takes experi...
11/14/2022 Views: 76, Comments: 0
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Ford's Cancellation of the Fiesta Inspires Outpouring of Tributes... Just Not Here in the States

11/10/2022 posted in Hemmings Motor News Blog
by dstrohl
Small cars don't have much time left on this world, apparently, and the latest casualty of that trend is the Fiesta, which Ford recently announced it...
11/10/2022 Views: 130, Comments: 3
Last comment 11/13/2022 by Griffex
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