Flat Earth MathAbout a week ago I posted a video addressed to Bev and the Try Thinking / On the Level crew, with a little math challenge: finding the slope of a curved graph. They mentioned it briefly in Monday’s show, but were unable to figure it out.
SPECIAL THANKS TO MY CHANNEL MEMBERS! Johnny Ragadoo, Luke Filewalker, Jim Jackson, TimothyP.Southwick, Peter Harrington, Shawn Hawkins, YourPal Al, Rachie 00000, Citizen 9
======================== Table of Contents 0:00 Introduction 1:15 Math Challenge 1:48 Bev's Response 4:58 Developing a Solution 6:16 Review Slope 7:53 Difference Quotient 9:24 Limit as h goes to 0 is slope 10:58 Graphing on y=x^2 14:51 Spreadsheet to illustrate difference quotients 19:28 Closing
Rebuttal to Bev 3.1: Math Challenge AnsweredFlat Earth Math2023-07-09 | About a week ago I posted a video addressed to Bev and the Try Thinking / On the Level crew, with a little math challenge: finding the slope of a curved graph. They mentioned it briefly in Monday’s show, but were unable to figure it out.
SPECIAL THANKS TO MY CHANNEL MEMBERS! Johnny Ragadoo, Luke Filewalker, Jim Jackson, TimothyP.Southwick, Peter Harrington, Shawn Hawkins, YourPal Al, Rachie 00000, Citizen 9
======================== Table of Contents 0:00 Introduction 1:15 Math Challenge 1:48 Bev's Response 4:58 Developing a Solution 6:16 Review Slope 7:53 Difference Quotient 9:24 Limit as h goes to 0 is slope 10:58 Graphing on y=x^2 14:51 Spreadsheet to illustrate difference quotients 19:28 ClosingInterview with Will Duffy (The Final Experiment)Flat Earth Math2024-07-19 | I'll be speaking with Will Duffy, creator of The Final Experiment, which will send representative of Flat Earth and Globe Earth to Antarctica in its summer in December, 2024, to observe the sun at midnight. Will it set? Will it cycle for 24 hours?
Please consider donating to Critical Think's fundraiser, so he can participate! He's been carrying a set of scales and reference weights all over, and he'll collect data from Antarctical!
gofundme.com/f/the-final-experiment-participant-fund-raiserEclipse from Erie, PA. Was it the Moon? (Flat Earth / Globe Earth)Flat Earth Math2024-07-06 | Jeremy McGarry noticed something strange when he viewed the April 8, 2024 eclipse from Erie, PA. Could it be that it wasn't the Moon?
U.S. Naval Observatory: Altitude/Azimuth data https://aa.usno.navy.mil/data/AltAz
U.S. Naval Observatory: Eclipse data in Erie, PA https://aa.usno.navy.mil/calculated/eclipse/solar?eclipse=12024&lat=42.1292&lon=-80.085&label=Erie%2C+Pa&height=222&submit=Get+Data
Gorgeous animation of August 2017 eclipse by Larry Koehn: vimeo.com/156511293Brians Logic discovers the Globe HorizonFlat Earth Math2024-06-24 | “Globe Non Refraction Fraud” by Brian’s Logic youtube.com/watch?v=kPsW-ujcwvw (26 minutes)My Predictions for April 8, 2024 solar eclipseFlat Earth Math2024-04-06 | No real details here, I'm just "going on record" with the results of my geometric analysis, starting with the Nautical Almanac and using high school geometry, to predict 13 values about the eclipse, which at the time this video was recorded, will be in two days.
Join this channel to get access to perks: youtube.com/channel/UCTDz58kK5bdffWLSx4zgAFA/joinHotspot and Horizon prove Flat Earth! (High altitude balloon footage)Flat Earth Math2024-01-01 | The first minute of this video is satire. Taboo Conspiracy did not make any such video. 🙂
“Near Space Weather Balloon Launch with Gopro to 109 000 feet!” by Sivert Rotabakk youtube.com/watch?v=95NDkABAsSk (12 minutes)
“Near Space Weather Balloon With Gopro To 109 000 Feet Full 4 Hour Video” by Rotaflight youtube.com/watch?v=9dfVtaZbuIQ (4 hours)
Walter Bislin’s Lens Distortion simulator: http://walter.bislins.ch/bloge/index.asp?page=Lens+Distortion+and+the+Curvature+of+the+Earth
Or you can support this channel via Patreon: patreon.com/FlatEarthMathFlatzoids December Solstice Sunrise (Flat Earth/Globe Earth)Flat Earth Math2023-12-26 | Can I successfully analyze Flatzoid's Sunrise footage from his vacation spot in South Africa, on the December Solstice? ERROR: at 5:37 I accidentally reversed my on-screen azimuth values of 112º and 118º.
Or you can support this channel via Patreon: patreon.com/FlatEarthMathDecember Solstice Flat Earth / Globe Earth Azimuth predictions! (Armchair)Flat Earth Math2023-12-21 | Take a look over my shoulder as I pick two random world cities (one Northern Hemisphere, one Southern), and use SunCalc to get sunrise/sunset data from them. Let's see if my "Azimuth of Sunrise/Sunset" spreadsheet can correctly predict the real-world azumuths!
Featuring geometry based on Flat Earth (Gleason) and Globe Earth specifications, derived from scratch here, in this 18 minute video: "December Solstice Observations #2: Azimuth of Sunrise / Sunset" youtube.com/watch?v=Opwm5FQunnU
Walter Bislin's Flat Earth Dome Model (please read his "Important Note") walter.bislins.ch/FED
Or you can support this channel via Patreon: patreon.com/FlatEarthMathDirty Dozen Eclipse Challenge aftershowFlat Earth Math2023-12-18 | Challenge video here: youtube.com/watch?v=7BbJJWJMPWs Nothing planned for this After Show other than discussing what folks think about the eclipse challenge! Does anyone want to try it? Do you think Flat Earth folks will try?Dirty Dozen Eclipse Predictions (Flat Earth / Globe Earth) PLEASE SHAREFlat Earth Math2023-12-17 | https://www.ShadowAndSubstance.com/ by Larry Koehn (great eclipse visualizations)
http://xjubier.free.fr/en/site_pages/solar_eclipses/TSE_2024_GoogleMapFull.html Xavier Jubier's very detailed eclipse maps, click anywhere!
https://TheNauticalAlmanac.com/TNARegular/2024_Nautical_Almanac.pdf 2024 Nautical Almanac (skip to PDF page 81 for Monday, April 8, 2024's table)Magical Mirages or the Earth is Flat? (Taboo Conspiracy)Flat Earth Math2023-12-11 | Taboo Conspiracy’s “Magical Mirages or the Earth is Flat? 12 Photos Proving the Earth is Flat” (10 minutes) youtube.com/watch?v=ffzFSOII6tY
His video response for Taboo Conspiracy: “Ben is AFRAID of doing THIS (part 1) (Taboo Conspiracy)” (9 minutes) youtube.com/watch?v=B9PcL0CaESU
Walter Bislin’s Flat Earth Dome Model: http://walter.bislins.ch/bloge/index.asp?page=Flat+Earth+Dome+ModelBrians Logic and the Tangent ParadoxFlat Earth Math2023-11-08 | Brian’s Logic “Tangent Paradox” video (20 minutes): youtube.com/watch?v=X41m1YUfCXk
My video doing an analysis of “Sarugaki’s Jabberwocky” (17 minutes): youtube.com/watch?v=sfRVU66tZ7UIs This Polaris? (photography by eftupworld)Flat Earth Math2023-10-07 | YouTuber "eftupworld" posted a pair of images which he calls Polaris. I had my doubts.
My conclusion (star in question): worldwidetelescope.org/webclient/#/ra=1.14318&dec=86.26002&fov=0.71835Rebuttal 3.4: Sarugakis JabberwockyFlat Earth Math2023-08-08 | At least six times Sarugaki (over at the On the Level discord server) has posted this pair of "proofs" claiming an exception to my ironclad rule: Vertical is aligned with plumb. Horizontal is perpendicular to vertical, full stop, no exceptions.
So I take it apart in this video.
0:00 Intro 1:21 Discord "discussion" 4:06 Sarugaki's diagram 5:13 Definitions and Axioms 9:24 Proof #1 (start) 10:13 Sidebar: Conditional Statements 11:34 Proof #1 (continued) 12:50 Sidebar: Proof by Contradiction 13:20 Proof #1 (conclusion) 14:21 Proof #2 15:16 Cargo Cult analogy 16:40 Closing thoughtsAftershow Open Panel: Perpendicular to a CircleFlat Earth Math2023-07-30 | Nothing planned, just a gathering of folks who want to chat a bit after the Bev 3.3 video (Perpendicular to a Circle)Rebuttal to Bev 3.3: Perpendicular to a CircleFlat Earth Math2023-07-30 | In this video I attempt to draw perpendiculars to a circle, based on first principles (literally starting with the Pythagorean theorem). If you've forgotten the stuff from the first week of Calculus, you might enjoy this!
0:00 Intro 2:26 Dunning-Kruger...'tis Globe! 3:54 Deriving formulas 7:06 Testing at 45º 8:51 Quarter-circle with 3 test points 10:28 "Slope Assistant" spreadsheet 11:47 Testing 3 points 15:43 Radius perpendicular to circumference 16:58 Practical application of slope of a curve 19:22 Final ThoughtsRebuttal to Bev and Try Thinking/On the Level v3.e Triangles sum to 180ºFlat Earth Math2023-07-24 | Recently the folks at the Try Thinking YouTube channel / On the Level discord have been talking a whole lot about how triangles always have 180º. So I decided to look it up on Wolfram to see what the experts say.
#flatearthRebuttal to Bev and Try Thinking: Sarugakis Logic and ObfuscationFlat Earth Math2023-07-20 | Last Friday I was on Bev's Try Thinking / On the Level discord, and they really had fun with my claim that I measured the angles of a spherical triangle across the United States and got a sum of more than 180º. Yesterday I popped in the text chat of the discord, and struck up an interesting conversation with Sarugaki, who's a regular on that Discord. This video is mostly on our conversation, with a series of logic challenges at the end. (answers below... scroll down)
Answer Key below
1. Circuit #2 = OR 2. Only LED #20 will light. 3. True 4. to 7: all False. 8. TrueBev Rebuttal 3.1 After Show Open PanelFlat Earth Math2023-07-09 | We'll gather here for an impromptu open panel, to discuss my latest 20-minute video on finding the slope of a curved function. Anyone may join (link will be in chat).Round 3 After-show open panelFlat Earth Math2023-07-03 | Shawn Hawkins and Matt "I can Science That" joined me as we talked about a variety of stuff, including Mandela Effect and Conspiracy Theories, the nature of belief, and why some folks are in this Flat Earth discussion arena. :-)
This is an "after show" from the premiere of my 18-minute video: "Rebuttal to Bev and the Try Thinking crew, Round 3" youtube.com/watch?v=i7tlKC5aXlgRebuttal to Bev and Try Thinking, Round 3 (Horizontal, Vertical, Level)Flat Earth Math2023-07-03 | Thanks to Channel Members: TimothyP.Southwick (Newton), Johnny Ragadoo (Copernicus), Luke Filewalker (Eratosthenes)
Video Contents 0:00 Introduction 0:35 Math Challenge 2:01 Revisit prior videos 3:57 The Shy Drinking podcast 5:39 Vertical, Horizontal, and Level 7:06 Super Mario Galaxy! 12:58 Learn some basic shapes 15:39 Parting ThoughtsPredicting Azimuth of June Solstice Sunrise/Sunset 2023 (Flat Earth/Globe Earth)Flat Earth Math2023-06-22 | This video mostly explores the azimuth calculator, which I described in an earlier video. Calculator: docs.google.com/spreadsheets/d/1tlKuDaquLQMkil74hlp8fTdOTK2twVm9T4OMNYEWEK0/edit?usp=sharing (needs Google account, or you can download it as an Excel spreadsheet)
Original video, in which I derive all the formulas: (28 minutes) youtube.com/watch?v=dJYuksMojN4&list=PLoGRYf-thOeUXQJkG8Nwd0qPdEdseNTBoAre horizontals perpendicular to verticals? (Jeremy conversation)Flat Earth Math2023-06-19 | On 17 June 2023 I had a conversation with Jeremy over at the Earth Awakenings Discord server. He wanted to walk me through his conception of horizontal and vertical on a globe Earth, but had great trouble understanding what I was saying. This video is an illustration of our conversation.
Earth Awakenings Discord server: discord.com/channels/847034598847283220Bev defines a straight line on a sphereFlat Earth Math2023-06-03 | This was from Bev's Try Thinking Discord 6/2/2023: youtube.com/live/TCQjA7RH95E?feature=share&t=9912Challenge: Find ratio of a triangles sides!Flat Earth Math2023-06-03 | This was inspired by a little animated graphic in Bev's Try Thinking Discord. I tried to add a twist by restricting folks to not using the length of side GJ in their calculations, for fun.Flat Earth: Crete from Israel?Flat Earth Math2023-05-28 | This video is made from frames screen-captured from Shimshon's original: youtube.com/watch?v=y1MBHT7X2f4
I captured one frame every 5 seconds, then image stabilized based on the oil platform "Mari-B" and added three fixed arrows approximately where the three "mountains" were most prominent, for reference.
Are those clouds, or are they the peaks of Crete?
Link to Taboo Conspiracy's video: youtube.com/watch?v=R3Blx6Tt4LsAre all vertical lines parallel? (Bev Try Thinking)Flat Earth Math2023-01-18 | About two weeks ago, I caught part of a live stream in which Bev demonstrated that vertical lines are always parallel, and he used a geometric proof by Sarugaki, in his Try Thinking discord server. I made a quick response, which I called my rebuttal to Bev, and published it that night.
My "rebuttal" video: youtube.com/watch?v=DTE4_eDb0PQ (4 minutes)Green Polygon Challenge!Flat Earth Math2023-01-14 | The folks at Bev's Try Thinking discord are shocked that I teach school children, because of my complete ignorance of geometry. So here's a challenge for you, to see if you're as ignorant as me! Can you find the area of the green polygon without ever using length x? Enjoy!Intersection of a plane and a sphereFlat Earth Math2023-01-13 | The folks at Bev's Try Thinking discord ridiculed me when I said that the intersection (the set of all common points, or locus) of a sphere and a plane was a circle. So I googled it!
#shortsRebuttal to Bev Try ThinkingFlat Earth Math2023-01-04 | Do two vertical lines being perpendicular to a horizontal one disprove the globe? We'll see!
I caught a bit of Bev's show tonight live as I was driving home from work, --but I don't see it on his channel, so I can't link to it here.-- UPDATE: Here it is, cued up to about the 1-hour mark, and it continues for about 20 minutes from a whiteboard drawing through an on-screen diagram with geometric "proof." youtu.be/PBU4LXxWgME?t=3606Quick response to Rachies Specular video #shortsFlat Earth Math2022-03-26 | This is a quick response to a video by @Rachie-nj3oi where she claims the specular highlights can't be on the top of a shiny object, if the light source is below (elevation-wise) the object. youtube.com/watch?v=8X630Euaarw (1 minute)
In actuality, the location of the specular highlights have nothing to do with what object is "higher" or "lower" than the light source. Rather, the relationship only has to do with the location of the camera, and the relative positions of the shiny object and the light source IN THE CAMERA'S VIEW.
Wolfie6020's original video, where he's flying above the "altitude" of the sun (it casts shadows on his cockpit ceiling): youtube.com/watch?v=1EGvRuUe8rU (5 minutes)Equinox Challenge #shortsFlat Earth Math2022-03-14 | Every year on March 20 and September 22 or 23, we have an Equinox during which you can easily determine the shape of the Earth!
Your challenge: make one or more of these observations (details in the Equinox Playlist below) and post your results to either FlatEarthMath.boards.net or you can email them to me at FlatEarthMath at gmail.
For a bit of "perspective" here's a geometric analysis of the Equinox sun above the plane of a flat Earth: youtube.com/watch?v=zH02lT1ByKU (8 minutes) by @FlatOutFE (Hat tip to @Wordavee1)Sight Reduction Tables Spreadsheet in realtime!Flat Earth Math2022-02-22 | I've been learning about celestial navigation, and discovered that the process doesn't end with the Nautical Almanac and sextant readings, it actually uses a process called "Sight Reduction." On the ocean, navigators can use Sight Reduction Tables to help in the process. I decided to try to duplicate the tables using home-grown methods (based on spherical trigonometry, specifically the Spherical Law of Cosines).
https://msi.nga.mil/Publications/SRTMar (my source for the tables)
0:00 Intro to the Table 4:17 The Celestial Triangle 12:57 Spherical Law of Cosines 16:06 Starting the Spreadsheet 24:54 CoDec, CoAlt formulas 28:16 Hc, d in decimal form 30:11 Formatting Hc 35:00 Formatting d 37:30 Azimuth formula 48:40 “CONTRARY” Hc, d, Z 55:07 “SAME” but opposite LHA 1:02:49 Eliminating negative Hc 1:08:42 Final spreadsheet
Please excuse all the mistakes, part of the challenge was to see if I could do a complete spreadsheet in about an hour, in realtime, with no script and no cuts. I did a few notations on-screen, but my errors are there for all to see, and some are cringe-worthy. Sorry! :-)
Please check out a complete celestial navigation course at @The Nav Station. And thanks to @roohif for giving me my starting values for my challenge.After Show (Open Letter to N.O.)Flat Earth Math2022-02-07 | We'll do an open panel aftershow after the premiere of my open letter to Nathan Oakley.An Open Letter to Nathan OakleyFlat Earth Math2022-02-06 | A 56-minute letter to my old buddy Nathan Oakley.
0:00 Intro 1:11 Our History 6:48 "Assume" a sphere 10:37 Logical Fallacies 11:17 Begging the Question 12:16 False Dichotomy 15:51 Non Sequitur 18:59 Requiring R 26:44 Eratosthenes 31:15 Lying 36:08 Curved Adjacent 48:40 Targeting Children 53:35 ConclusionCharles v. Anthony AFTER SHOW (Civil Discourse Ep. 22)Flat Earth Math2022-01-18 | Once my conversation with Sleeping Warrior is done, we'll pop over here for an open-panel after show.
Link to the Sleeping Warrior show: youtube.com/watch?v=2MCYQiVibGkFlat Earth Civil Discourse with Sleeping Warrior (Ep. 22)Flat Earth Math2022-01-18 | Hello! We're going to try again for a conversation with Sleeping Warrior on Monday. The topic is "Can careful observations of the Sun help determine the shape of the Earth?" It's going to be less formal than a debate, but more formal than a conversation.Flat Earth Civil Discourse (Ep. 21) with Open PanelFlat Earth Math2022-01-17 | Sleeping warrior couldn't make it at our scheduled time, so we had an open panel. Crowxe joined as well as Johnny System.Is R required? Aftershow!Flat Earth Math2022-01-10 | We'll have a short live show after the premiere of the 17-minute "is R required" video. Feel free to join me in StreamYard! (Headphones recommended.)Do I require R (Earths radius) in my Explorations?Flat Earth Math2022-01-09 | Join this channel to get access to perks: youtube.com/channel/UCTDz58kK5bdffWLSx4zgAFA/join
Learn about Logical Fallacies: yourlogicalfallacyis.com *Disclaimer: Dr. No is not a real fallacy. :-)
#FEMFlat Earth Civil Discourse (Ep. 20) with Nathan OakleyFlat Earth Math2022-01-03 | NOTE: IF YOU PAID FOR A SUPERCHAT AND DON'T FEEL YOU "GOT WHAT YOU PAID FOR" PLEASE CONTACT ME VIA EMAIL. :-) FlatEarthMath at gmail. I'm sorry for the disappointment. My guest was non-cooperative for the entire 60 minutes. SuperChat questions were not addressed they way they could have been if this were a "real" civil discourse. I'll be happy to refund any money, if requested.
Nathan Oakley joined me for a discussion that was supposed to be about the shape of the Earth, but ended up not being productive in any way shape or form. His channel: NathanOakley1980 youtube.com/channel/UCkLJN43Fs8Vf_4S9ijrYiyAFlat Earth Civil Discourse (Ep. 19) with KimomicronFlat Earth Math2021-12-31 | Please join us as Kimomicron and I discuss the shape of the Earth. His channel: Under No Pressure youtube.com/channel/UCmScKxJUrMfH2tSJYxlhY6A
Torsion Bar (Cavendish apparatus) in a Vacuum, by BioDuel: youtube.com/playlist?list=PLOmmcLhOBgH6X4nrezZ2uc5pbwpgytPRmPremiere Aftershow with open panelFlat Earth Math2021-12-29 | What are your thoughts about my introductory video to the new video series: "Can Natural Distortion cause Deceptive Perfection"? Join us in the panel, or just in the chat! Headphones are recommended.Can Natural Distortion Produce Deceptive Perfection? (Introduction)Flat Earth Math2021-12-29 | This is an introductory video in a series of videos designed to get folks to see the natural sights of our sky in a new way. Can this approach help change minds in the Flat Earth debate?Flat Earth Civil Discourse (Ep. 18) with Kyle Adams again!Flat Earth Math2021-12-21 | Please join us (in our second conversation) as @Kyle Adams and I discuss the shape of the Earth. His channel: youtube.com/user/yaddoe
The conference talk in Brazil which I mentioned: "Circular Reasoning and the Rise of Flat Earth Belief" 1h 45m youtu.be/ZvPNVCdWW9w
I also mentioned this essay by Isaac Asimov: "The Relativity of Wrong" hermiene.net/essays-trans/relativity_of_wrong.htmlLivestreaming Test... Any interesting Flat Earth topics?Flat Earth Math2021-12-16 | I haven't livestreamed with StreamYard in a loooong time, so I'm just testing things out here. No real topic planned. I do hope to speak with Kyle Adams soon in some livestreams! :-)