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05/19/2020 8:22 PM Chess Practice at School
by SolarEagle
Last post: 07/07/2024 7:22 PM
by Kris
 36 395
07/04/2024 8:47 AM Red Shift
by Haymaker
Last post: 07/04/2024 7:17 PM
by Haymaker
 6 157
05/27/2008 6:08 PM Mild steel corrosion and caustic
by aussiedownunder
Last post: 07/04/2024 5:10 AM
by PWSlack
 8 592
06/28/2024 8:47 AM Why a New Password for Every Time I Log In?
by HiTekRedNek
Last post: 07/01/2024 4:54 AM
by PWSlack
 8 126
03/27/2024 8:25 AM FSK Bridge Collapse
by HiTekRedNek
Last post: 06/28/2024 7:04 AM
by HiTekRedNek
 102 949
06/12/2024 9:10 AM Are Space and Time Inseparable?
by hitekrednek2
Last post: 06/26/2024 10:03 AM
by Haymaker
 14 260
06/21/2024 6:59 AM Unable to Post to CR4 with Pictures
by BruceFlorida
Last post: 06/26/2024 9:34 AM
by gutmonarch
 23 144
06/18/2024 9:37 AM Is "OFF" Really "OFF"?
by HiTekRedNek
Last post: 06/26/2024 9:32 AM
by gutmonarch
 8 272
06/21/2024 11:09 PM Trying to Identify and Source Window Parts
by BruceFlorida
Last post: 06/26/2024 6:45 AM
by BruceFlorida
 15 205
01/25/2023 10:40 PM Source of Energy
by Lehman57
Last post: 06/22/2024 2:39 AM
by Gavilan
 55 871
04/23/2021 4:40 PM An Overhaul of the Electrical Grid Required for EV
by HiTekRedNek
Last post: 06/21/2024 10:44 AM
by WJMFIRE
 47 590
09/12/2023 8:33 AM DC Charger Controller for CCS1
by marcot
Last post: 06/19/2024 1:11 AM
by rwilliams
 7 95
06/09/2024 3:19 PM Light Driven Water Evaporation
by Rixter
Last post: 06/14/2024 12:46 PM
by Rixter
 14 289
05/21/2024 10:33 AM Thunderstorm Generator
by HiTekRedNek
Last post: 06/01/2024 6:50 PM
by lyn
 32 665
05/30/2024 8:48 PM Reverse Ground Clamp for Ladder Tray
by EV1guy2004
Last post: 06/01/2024 6:57 AM
by HiTekRedNek
 5 255
05/26/2024 10:19 AM Black Paint Makes White Paint Whiter
by HiTekRedNek
Last post: 05/30/2024 10:45 AM
by Codemaster
 13 329
05/23/2024 7:26 PM Cooling a Workshop
by sqyuma
Last post: 05/29/2024 9:25 AM
by HiTekRedNek
 8 155
05/18/2024 7:55 AM Radio Programs from the 1940s Received on Modern Equipment
by HiTekRedNek
Last post: 05/29/2024 7:15 AM
by PWSlack
 11 327
05/25/2024 7:29 AM Microscopic Black Holes?
by HiTekRedNek
Last post: 05/26/2024 9:45 AM
by HiTekRedNek
 3 137
05/23/2024 7:53 PM Image Posting Issue
by sqyuma
Last post: 05/25/2024 12:37 PM
by SolarEagle
 9 489
05/14/2024 9:30 AM Geo Storm Affects Farmers' Tractors
by HiTekRedNek
Last post: 05/22/2024 7:05 AM
by HiTekRedNek
 22 265
04/28/2024 8:04 AM How to Fix Unemployment
by HiTekRedNek
Last post: 05/18/2024 11:49 AM
by agua_doc
 16 333
04/18/2024 2:30 AM Determinant Identity
by kasharma
Last post: 05/18/2024 3:37 AM
by Randall
 3 171
05/10/2024 7:13 PM Special Formula Plastic Film
by NSS
Last post: 05/15/2024 8:23 AM
by HiTekRedNek
 13 176
05/10/2024 12:51 PM Aurora this Weekend
by Rixter
Last post: 05/15/2024 8:10 AM
by Rixter
 7 73
04/28/2024 10:35 AM Why Don't Advertisers Understand How to Present Filters?
by Randall
Last post: 05/11/2024 2:08 AM
by GM1964
 9 214
04/29/2024 4:12 PM Will Cut Groove Maintain its Shape After PVC Board is Bent?
by Trees4Life
Last post: 05/07/2024 5:01 PM
by Rixter
 19 256
05/03/2024 7:17 AM Sonar Image of the Adella Shores Shipwreck
by BruceFlorida
Last post: 05/04/2024 8:57 AM
by Rixter
 7 229
04/25/2024 4:24 AM Solar Tracking for Solar Cookers and Solar Panels, Project Update
by gaiatechnician
Last post: 04/30/2024 4:11 AM
by Nigh
 9 236
04/21/2023 10:27 AM Relay lens choice
by Nigh
Last post: 04/29/2024 11:42 AM
by Randall
 16 278
04/17/2024 9:04 AM Interesting Puzzle
by Rixter
Last post: 04/28/2024 9:02 PM
by dkwarner
 29 356
04/10/2024 3:47 PM Mt. Etna Blowing Smoke Rings
by Rixter
Last post: 04/27/2024 9:07 AM
by phoenix911
 14 305
06/12/2007 8:52 AM Multi hole orifice plate calculations
by amsats
Last post: 04/24/2024 9:31 AM
by Codemaster
 18 4971
07/21/2008 9:13 AM how to design a water level indicator using float?
by charlesdenieles
Last post: 04/23/2024 7:56 AM
by Anonymous Poster
 9 571
07/02/2016 9:24 AM No Back Pressure of Purifier Model Type Osc 5-02-066
by jm gamposilao
Last post: 04/23/2024 4:11 AM
by PWSlack
 7 459
04/24/2007 2:28 PM Universcale
by Mousejockey
Last post: 04/19/2024 7:10 AM
by PWSlack
 3 303
04/06/2024 11:17 AM Cosmic Rays Affecting Cloud Formation?
by HiTekRedNek
Last post: 04/17/2024 8:42 AM
by HiTekRedNek
 11 204
03/29/2011 9:24 AM Helium balloons and 1 tonne.
by Squeakybrain
Last post: 04/12/2024 9:36 AM
by PWSlack
 18 279
04/02/2024 3:56 PM Coating to Improve Tensile Strength in Concrete Surface
by sqyuma
Last post: 04/12/2024 4:46 AM
by HiTekRedNek
 15 251
04/05/2024 7:57 AM Interesting Rocket Launch this Morning
by BruceFlorida
Last post: 04/10/2024 4:31 PM
by Brave Sir Robin
 3 234
03/18/2024 11:42 AM Reduce CO2, Save Millions on Road Maintenance
by HiTekRedNek
Last post: 04/02/2024 4:03 PM
by HiTekRedNek
 37 303
03/19/2024 10:14 AM Why Use Copper Coated Steel Wire in a Motor?
by HiTekRedNek
Last post: 03/24/2024 3:12 PM
by Rixter
 15 313
09/04/2008 8:32 PM And in Arctic News......Global Warming refusing to be ignored
by Bayes
Last post: 03/22/2024 7:53 AM
by sceptic
 127 18475
03/10/2024 5:19 PM The Feynman Sprinkler Problem
by Rixter
Last post: 03/18/2024 1:17 PM
by dkwarner
 36 369
03/14/2024 10:23 AM NH3/CH4
by NSS
Last post: 03/14/2024 1:37 PM
by Rixter
 4 220
02/26/2024 11:14 AM Interesting Phenomenon
by Rixter
Last post: 03/10/2024 10:13 AM
by HiTekRedNek
 8 214
02/28/2024 9:30 AM Old Habits
by HiTekRedNek
Last post: 03/10/2024 9:51 AM
by HiTekRedNek
 8 276
02/29/2024 9:49 AM Vitrified Stone Walls
by HiTekRedNek
Last post: 03/09/2024 11:48 AM
by HiTekRedNek
 13 272
02/28/2024 9:20 AM Fire Ant Colony Destruction
by HiTekRedNek
Last post: 03/09/2024 10:52 AM
by agua_doc
 17 334
09/05/2023 8:47 AM Trying to Source Auto Parts
by Randall
Last post: 03/08/2024 5:50 PM
by SolarEagle
 49 342
03/04/2024 10:02 PM Building a Drone That can Follow and Film an F1 Race
by SolarEagle
Last post: 03/06/2024 8:50 AM
by MikeMack747
 3 141
03/02/2024 8:09 PM Why Do Bugs Fly into Lights?
by Rixter
Last post: 03/04/2024 9:17 PM
by SolarEagle
 5 232
02/21/2024 2:36 PM Solving System of Non-linear Equations
by JBTardis
Last post: 02/29/2024 3:09 AM
by engineertony
 54 270
02/24/2024 6:32 AM Radio Waves and Smoke Signals
by HiTekRedNek
Last post: 02/27/2024 4:57 PM
by HiTekRedNek
 15 205
02/19/2024 2:21 PM Race Cars with No Drivers
by HiTekRedNek
Last post: 02/27/2024 4:22 PM
by HiTekRedNek
 36 226
01/29/2013 7:02 PM Is this Considered Located in a Hazardous Area?
by wheel
Last post: 02/27/2024 7:32 AM
by HiTekRedNek
 60 1186
02/24/2024 6:40 AM Microplastics in the 1700s?
by HiTekRedNek
Last post: 02/26/2024 3:01 PM
by Rixter
 13 370
01/23/2024 11:02 AM Mirror Focus?
by HiTekRedNek
Last post: 02/24/2024 11:46 AM
by Lehman57
 38 464
02/22/2024 7:35 AM Rate
by JWthetech
Last post: 02/23/2024 6:23 AM
by JWthetech
 6 73
09/18/2008 5:48 AM Testing Methods & Standards for Brass Spring Check Valve??
by jonesliu
Last post: 02/22/2024 10:05 AM
by PWSlack
 11 166
08/23/2007 8:16 PM Level detector
by Juan Carlos XX
Last post: 02/22/2024 6:07 AM
by PWSlack
 3 169
02/05/2024 7:56 AM Delay "Off" Timer on Fridge Light
by Randall
Last post: 02/22/2024 6:02 AM
by Doorman
 38 340
07/07/2014 11:15 PM Contact
by cyclo
Last post: 02/22/2024 3:17 AM
by PWSlack
 8 188
09/30/2011 4:21 PM Projecting On Waterfall
by ky
Last post: 02/21/2024 6:37 PM
by SolarEagle
 14 354
08/19/2008 11:03 AM Calculating Vehicle and Trailer Turning Radius
by Divers
Last post: 02/21/2024 8:25 AM
by Anonymous Poster
 13 3158
02/14/2024 1:35 PM Brake Light Wiring Diagram
by HiTekRedNek
Last post: 02/20/2024 7:19 PM
by HiTekRedNek
 9 250
05/21/2010 12:30 PM How About Concentrating on One Thing
by johnnyb5
Last post: 02/20/2024 7:16 AM
by Anonymous Poster
 41 419
05/21/2010 11:22 AM Steam consumption for 1MW of electricy
by rosli
Last post: 02/20/2024 7:12 AM
by PWSlack
 14 1954
02/05/2024 4:24 PM Charging a Nickel-Cadmium Battery
by Anonymous Poster
Last post: 02/17/2024 7:06 AM
by 67model
 15 681
07/12/2007 12:21 PM Ovality in Line Pipe
by Anonymous Poster
Last post: 02/14/2024 7:30 AM
by PWSlack
 13 1130
01/17/2024 8:10 PM Do You Own the Mineral Rights Under Your Land?
by SolarEagle
Last post: 02/12/2024 9:27 AM
by Nigh
 16 398
02/09/2024 3:08 PM Billion Tons of Rare Earths
by Haymaker
Last post: 02/11/2024 9:08 AM
by phoenix911
 5 457
01/04/2024 3:01 AM Initial Motion
by HiTekRedNek
Last post: 02/07/2024 12:20 PM
by redfred
 39 355
11/28/2023 5:07 AM Innovative Sealed Road Treatments
by Just an Engineer
Last post: 02/04/2024 10:01 PM
by SolarEagle
 13 180
01/14/2024 10:35 AM How Did This Happen?
by HiTekRedNek
Last post: 02/04/2024 11:53 AM
by HiTekRedNek
 48 417
03/20/2009 9:57 AM Will a 50-Hz Washing Machine Work at 60-Hz?
by gbequizo
Last post: 02/04/2024 9:49 AM
by The Wizard
 19 3067
01/12/2024 9:02 AM Alternative Fuels for the Big Ships at Sea
by SolarEagle
Last post: 02/04/2024 8:53 AM
by SolarEagle
 50 411
01/27/2024 11:07 AM Unable to Send/Post a Topic
by thankan
Last post: 02/02/2024 9:41 AM
by HUSH
 10 141
12/29/2023 12:21 PM What Would You Make?
by Trees4Life
Last post: 01/26/2024 7:45 AM
by HiTekRedNek
 65 554
06/27/2012 11:26 AM Converting Thermal Conductivity to Specific Heat
by Chris1988
Last post: 01/23/2024 3:17 AM
by PWSlack
 23 656
01/01/2024 6:55 PM Electricity Production in the US Over Time
by SolarEagle
Last post: 01/20/2024 6:03 PM
by SolarEagle
 22 362
02/12/2023 11:14 AM Aliens are scam
by gutmonarch
Last post: 01/15/2024 5:10 AM
by Nigh
 27 369
12/17/2023 3:52 AM World's First Human Brain-Scale Neuromorphic Supercomputer
by SolarEagle
Last post: 01/13/2024 5:27 PM
by SolarEagle
 15 300
12/07/2006 7:02 PM Is a Chinese Dam Slowing the Earth's Rotation?
by Mustang
Last post: 01/12/2024 6:31 AM
by PWSlack
 34 2307
11/13/2023 7:32 AM Tesla Fires
by HiTekRedNek
Last post: 01/11/2024 11:08 PM
by Deefburger
 18 430
12/21/2023 12:02 PM Climate Finance Reporting is a Mess
by phoenix911
Last post: 01/11/2024 6:57 AM
by BruceFlorida
 6 148
12/08/2023 8:23 AM Christmas Present Ideas for Technical People
by BruceFlorida
Last post: 01/10/2024 6:51 AM
by BruceFlorida
 26 451
12/27/2023 7:54 PM Is it Possible to Apply Positive + in Favor of Newton III Motion Law as a Dynamic System in a Motor Engine?
by novelinflow
Last post: 01/09/2024 9:45 AM
by Anonymous Poster
 31 219
11/01/2023 4:42 PM Supercritical CO2 Turbines a Leap in Efficiency
by SolarEagle
Last post: 01/08/2024 6:42 AM
by David H
 17 352
04/17/2023 12:48 PM Electric vehicle charging
by Lehman57
Last post: 01/05/2024 10:56 PM
by Mfmatusky
 74 786
12/17/2023 9:30 PM Laptop Computer Keyboards
by Lehman57
Last post: 01/03/2024 11:32 PM
by Lehman57
 79 396
03/07/2021 9:33 AM How Stupid is this Respect My COVID Space Idea?
by Randall
Last post: 01/02/2024 3:51 PM
by Brave Sir Robin
 162 802
12/27/2023 4:28 AM Can Nuclear Waste Ever Be Solved? Yes
by SolarEagle
Last post: 12/30/2023 7:03 PM
by Lehman57
 11 199
12/15/2023 10:12 PM Two Questions......
by Sid_Sidow
Last post: 12/28/2023 5:55 PM
by Sid_Sidow
 9 208
10/03/2023 4:01 PM The Politics of Climate Change From an Insider
by SolarEagle
Last post: 12/27/2023 8:28 PM
by phoenix911
 59 600
09/20/2018 8:20 PM State of the Art Novel InFlowTech: ·1-Gearturbine - RotaryTurbo, ·2-Imploturbocompressor - One Compression Step
by novelinflow
Last post: 12/27/2023 7:38 PM
by novelinflow
 4 161
12/16/2023 10:30 AM Buoyancy
by NSS
Last post: 12/26/2023 9:57 PM
by jmueller
 17 197
10/13/2023 3:53 PM The Leap From Deflagration to Detonation Engines
by SolarEagle
Last post: 12/23/2023 11:36 PM
by SolarEagle
 4 307
12/12/2023 11:24 AM Gravity Waves
by HiTekRedNek
Last post: 12/22/2023 1:04 PM
by StandardsGuy
 15 239
11/28/2023 6:56 PM Time and its Effects
by agua_doc
Last post: 12/15/2023 6:07 AM
by HiTekRedNek
 8 149
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