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09/01/2020 2:21 PM Sewage Backflow Prevention
by gringogreg ; posted in General Discussion
Last post: 09/09/2020 4:23 PM
by phoenix911
 37 498
09/01/2020 9:52 AM Telescope
by oilcan13 ; posted in General Discussion
Last post: 09/15/2020 4:01 PM
by Rixter
 28 527
09/01/2020 6:49 AM Tesla's Dream Coming True?
by HiTekRedNek ; posted in General Discussion
Last post: 09/02/2020 3:58 PM
by rashavarek
 12 244
08/31/2020 11:16 AM Uses for Formic Acid
by HiTekRedNek ; posted in General Discussion
Last post: 09/05/2020 12:35 AM
by truth is not a compromise
 17 317
08/30/2020 8:18 AM Learn a Lot in a Few Minutes: Great Engineering Videos
by JE in Chicago ; posted in General Discussion
Last post: 12/10/2020 6:58 AM
by JE in Chicago
 25 427
08/29/2020 5:53 AM Diamond Battery?
by HiTekRedNek ; posted in General Discussion
Last post: 09/03/2020 11:38 AM
by SolarEagle
 11 413
08/28/2020 8:15 AM Basic Quantum Mechanics
by HiTekRedNek ; posted in General Discussion
Last post: 08/29/2020 12:31 PM
by StandardsGuy
 5 270
08/27/2020 6:54 PM Hot Wired but No Spark?
by JE in Chicago ; posted in General Discussion
Last post: 09/01/2020 9:18 AM
by JE in Chicago
 15 273
08/23/2020 10:08 AM What is so Special About 4.669?
by HiTekRedNek ; posted in General Discussion
Last post: 10/14/2020 9:02 AM
by HiTekRedNek
 28 643
08/22/2020 3:58 PM Kitchen Faucet Problem
by WJMFIRE ; posted in General Discussion
Last post: 08/24/2020 12:08 PM
by rwilliams
 17 419
08/21/2020 8:30 PM Ultra High Temperature Corrosion Resistant Alloys
by memyod ; posted in General Discussion
Last post: 08/25/2020 8:27 PM
by memyod
 14 232
08/20/2020 2:13 PM Can Your FitBit Detect Covid?
by rashavarek ; posted in General Discussion
Last post: 08/28/2020 5:47 PM
by phph001
 15 225
08/19/2020 2:03 PM Equipment Relocation and Warehousing
by bodesales1 ; posted in Commercial Space
Last post: 08/19/2020 2:03 PM
by bodesales1
 0 56
08/14/2020 10:48 AM Black Silicon Photodetector Breaks the 100% Efficiency Limit
by SolarEagle ; posted in General Discussion
Last post: 08/19/2020 7:35 AM
by HiTekRedNek
 5 351
08/13/2020 11:47 PM How Much Memory Do You Have On That Flashdrive in Your Pocket?
by Sid_Sidow ; posted in General Discussion
Last post: 08/21/2020 11:33 AM
by redfred
 13 373
08/13/2020 10:18 PM Digital Data and Mass
by HiTekRedNek ; posted in General Discussion
Last post: 08/20/2020 8:29 PM
by Rixter
 15 234
08/12/2020 8:06 PM A Set-Back for Astronomers and Scientists
by phoenix911 ; posted in General Discussion
Last post: 08/15/2020 5:02 PM
by JWthetech
 16 369
08/10/2020 7:00 AM Surface Preparation and its Importance in Industrial Painting
by gpellc ; posted in Commercial Space
Last post: 08/10/2020 7:00 AM
by gpellc
 0 63
08/07/2020 12:39 AM What is This Type of Vacuum Tube?
by Sid_Sidow ; posted in General Discussion
Last post: 08/08/2020 10:40 AM
by Sid_Sidow
 12 330
08/06/2020 9:42 AM Cosmic Rays Affect Cloud Formation and Climate
by HiTekRedNek ; posted in General Discussion
Last post: 08/12/2020 11:47 PM
by SolarEagle
 7 190
08/06/2020 9:21 AM Lightning vs Temperature
by HiTekRedNek ; posted in General Discussion
Last post: 08/09/2020 5:11 PM
by SolarEagle
 20 348
08/03/2020 11:01 PM Phantom Printer?
by Sid_Sidow ; posted in General Discussion
Last post: 08/10/2020 12:33 PM
by Jpfalt
 13 450
08/03/2020 5:39 AM In Need of Expert Advice
by Autobroker ; posted in General Discussion
Last post: 09/18/2020 7:15 PM
by Autobroker
 71 688
07/26/2020 4:24 PM Should Astronauts be Allowed to Take Their Pets in Space
by SolarEagle ; posted in General Discussion
Last post: 08/02/2020 10:39 PM
by SolarEagle
 25 317
07/24/2020 1:36 PM Electrolux Oven Error Code
by HiTekRedNek ; posted in General Discussion
Last post: 07/26/2020 6:28 PM
by JE in Chicago
 36 365
07/23/2020 8:23 PM Fun With Magnets Back in 1975
by SolarEagle ; posted in General Discussion
Last post: 07/27/2020 1:34 PM
by phoenix911
 5 264
07/21/2020 4:23 PM I Need a New Workstation
by Paulusgnome ; posted in General Discussion
Last post: 07/23/2020 11:32 AM
by rick_shoop
 7 319
07/20/2020 11:22 AM USA Made AC Recommendation
by Nancy_Swan ; posted in General Discussion
Last post: 07/21/2020 3:17 PM
by SolarEagle
 2 96
07/20/2020 4:27 AM What is the Best Tool to Migrate an NSF File into a PST Format?
by xokibo ; posted in Commercial Space
Last post: 07/28/2026 1:55 AM
by mackjohn
 7 155
07/19/2020 7:29 PM 670 nm Light Source
by HiTekRedNek ; posted in General Discussion
Last post: 02/24/2026 2:39 PM
by Karen3
 43 957
07/19/2020 7:03 AM Data Servers, Supercomputers, Nuclear Power Plant Advantageous Location
by gutmonarch ; posted in General Discussion
Last post: 09/20/2020 7:25 AM
by gutmonarch
 3 96
07/19/2020 3:37 AM Dice Probability Puzzle
by Jorrie ; posted in General Discussion
Last post: 07/22/2020 5:44 AM
by Tornado
 33 507
07/17/2020 4:29 PM What is this Metal and What Type Primer to Use?
by BruceFlorida ; posted in General Discussion
Last post: 07/20/2020 1:12 PM
by Jpfalt
 22 419
07/16/2020 9:31 PM Yes, Stephen Hawking Lied To Us All About How Black Holes Decay
by Rixter ; posted in General Discussion
Last post: 07/19/2020 1:27 AM
by Just an Engineer
 16 323
07/16/2020 1:49 PM Windscale Disaster
by SolarEagle ; posted in General Discussion
Last post: 07/23/2020 8:02 PM
by JWthetech
 48 355
07/15/2020 9:14 AM Unknown Object
by PAPADOC ; posted in General Discussion
Last post: 07/28/2020 4:27 PM
by Jpfalt
 27 630
07/14/2020 8:42 PM The Engineer and the Guillotine
by Griffex ; posted in General Discussion
Last post: 07/28/2020 11:29 PM
by SolarEagle
 4 142
07/14/2020 11:05 AM Historic Cisterns
by Lehman57 ; posted in General Discussion
Last post: 07/15/2020 8:25 PM
by Lehman57
 6 291
07/11/2020 4:52 PM Cancer Fighting Food
by Anonymous Poster ; posted in CR4 Feedback
Last post: 07/23/2020 11:48 AM
by StandardsGuy
 7 465
07/10/2020 3:53 AM Can a 3 Phase SCR Unit be Used as a Voltage Stabilizer?
by arunavamukerji ; posted in General Discussion
Last post: 07/14/2020 8:58 AM
by PWSlack
 11 203
07/06/2020 6:10 PM Periodicity in Covid-19 Data
by Rixter ; posted in General Discussion
Last post: 09/03/2020 6:11 AM
by thewildotter
 18 349
07/03/2020 11:39 PM CR4 DAILY DIGEST NOT RECEIVING AGAIN
by dhayanandhan.s ; posted in CR4 Feedback
Last post: 07/04/2020 4:37 AM
by Tornado
 1 121
07/02/2020 5:50 AM RS 608-727 (ANTEX TCSU1) Solder Station Schematic
by M. Jawed ; posted in General Discussion
Last post: 07/04/2020 12:01 PM
by Rixter
 9 432
06/30/2020 11:26 AM What is This Doodad?
by dishow2002 ; posted in General Discussion
Last post: 07/02/2020 9:10 AM
by mastrsmth
 20 578
06/29/2020 5:39 PM 1920 Refrigerator Changing Compressor
by wben01273 ; posted in General Discussion
Last post: 07/01/2020 10:45 PM
by rwilliams
 8 257
06/29/2020 8:21 AM Speed of Descent
by netmaker ; posted in General Discussion
Last post: 07/07/2020 5:17 AM
by PWSlack
 44 415
06/28/2020 1:56 PM Water Well Pressure Switch problems
by netmaker ; posted in General Discussion
Last post: 06/29/2020 12:37 PM
by SolarEagle
 4 153
06/22/2020 6:44 PM 120 V AC Single Phase Input and 120 V AC Single Phase Output VFD
by HiTekRedNek ; posted in General Discussion
Last post: 07/03/2020 4:43 PM
by GW
 29 581
06/22/2020 2:59 PM DC Inverter Split Air Conditioners - Fault or Error codes
by M. Jawed ; posted in General Discussion
Last post: 06/28/2020 7:07 PM
by SolarEagle
 5 267
06/22/2020 2:04 AM Absolute Humidity Measurements
by TSegakweng ; posted in General Discussion
Last post: 06/24/2020 7:25 AM
by PWSlack
 9 185
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