# Explained: 17.61 Mile Mirror Flash Supposedly Proves Flat Earth [Refraction]

#### Qulaey

##### New Member
In a Youtube video documenting an expariment done by youtuber MrThriveandSurvive. He observes a mirror flash of the sun through an inferared modified P-900 at a distence of 17.61 miles or 28.24km. See if you guys can help me debunk this.

Here are the atmospheric measurements that he took in order to calculate refraction using a snells law calculator.

He also did a "three way mirror flash" in order to show that atmospheric refraction did not interfere with the results. the way that he explains it in the video is not extremely clear so I might have interpreterted it wrong but in essence, he has set up mirrors at all three points of the lake: A, B and C. he claims that in his experiment he flashes the mirror at point A and this flash can be obesrved at both point B and C. then the team at point C will flash the mirrors at both point B and A. The flashes are claimed to be seen again by the both teams and finially he flashes the mirrors at point B, the flash is seen by people at point A and C.

He concludes that because of these three way triangular flashes, refraction could not have played a role in the observations as different densities in the air would not allow all three mirrors to be seen at all three points.

This stage of the experiment was not documented in the video.

A couple of issues with the expariment that I see already:

1. he does not explain the way he handles the mirrors while making the observations. we do not know if they were stationary set at a static angle or the teams were just wildly shaking them around until someone saw a reflection.

2. he did not account for the divergence of the reflected beam which means that we could be purely seeing the light on divergence, making the "3 way test irrelevant"

3. he failed to observe any moving vehicles or any of the team members on the infrared red camera, if the earth was indeed flat we should be able to see him and his team entirely, and be able to identify IR bloobs in the pictures of the mirror flashes.

#### Attachments

357.5 KB · Views: 425
606.5 KB · Views: 362

#### Mick West

Staff member
Essentially this is the same thing as a laser test. I cover that here:

Note that a water temperature of 65° and an air temperature of 80°+ is guarenteed to create significant bending of light near the surface, so so there will be a band of highly compressed shoreline, which will contain the light, but everything else will be too compressed to see.

Here are the atmospheric measurements that he took in order to calculate refraction using a snells law calculator.

Snell's law has very little to do with refraction in a medium with a gradient, especially where the gradient is nearly perpendicular to the light path. You need a form of ray tracing. Like this:

https://www.metabunk.org/refraction...ronto-cn-tower-laser.jpg~multiple~0~gap~0)))_

Here I've set a laser at 5 feet, camera at 5 feet, 18.8 miles apart. There's a relatively steep temperature gradient.

#### Qulaey

##### New Member
Does that mean the three way mirror test is invalid in proving that there is effect on the results by atmospheric refraction?

I didn’t really see how it would in the first place. He never explains it in his video.

Also a more clearer video to this one would be from a YouTuber named

Mike Boll who was one of the members in the experiment.

Video names: salton sea 18 mile mirror flash where he explains it in more detail.

#### Mick West

Staff member
Does that mean the three way mirror test is invalid in proving that there is effect on the results by atmospheric refraction?

I didn’t really see how it would in the first place. He never explains it in his video.

Yes it makes no difference. The light from the flash is widely spread. So some light will get thrrough. Here's the spread zoomed in x200 vertically with a narrow laser beam. This is for 18 miles.

Doing it over 10 miles with the same temperature gradient just makes the flash more visible.

And with a very different temperature profile, the light for the laser is still visible.

The important light is the light that skims the horizon. With something like a torch/flashlight or a sun mirror flash, it's a trivial matter to have a light path from light to camera via the horizon, with even a very small temperature gradient. Lasers are slightly more limited in angles, but if you point it at the horizon then it will probably get through over cold water for very long ranges. Here we've got a sun flash which is a pretty broad beam aimed at the horizon. Of course it's visible.

#### Mick West

Staff member
3. he failed to observe any moving vehicles or any of the team members on the infrared red camera, if the earth was indeed flat we should be able to see him and his team entirely, and be able to identify IR bloobs in the pictures of the mirror flashes.

Note that a water temperature of 65° and an air temperature of 80°+ is guarenteed to create significant bending of light near the surface, so so there will be a band of highly compressed shoreline, which will contain the light, but everything else will be too compressed to see.

This effect can be seen if we make a more realistic gradient, where the cooling effect of the water is limited to a relatively narrow band.
https://www.metabunk.org/refraction...ronto-cn-tower-laser.jpg~multiple~0~gap~0)))_

Notice the compression of the floors of the white building on the right

Compare with flat earth no refraction view

(Lasers are broken in FE mode in the simulator right now)

The entire building is compressed in the real world (curve, refraction) view, but at least the upper portion is recognizable. The region near the horizon is all squashed into a thin band where you can't make out any details, but you can see lights and lasers.

#### Qulaey

##### New Member
Alright cheers mick!

Replies
19
Views
4K
Replies
9
Views
1K
Thread starter Related Articles Forum Replies Date
Explained: Reddit UFO Los Angeles lights in the sky [Light on Pole] Skydentify - What is that Thing in the Sky? 17
EXPLAINED: Weird Object on /r/aviation [Artbreeder GAN images] Skydentify - What is that Thing in the Sky? 30
Explained: Panama UFO "Disc" [Cessna Taking Off] UFOs and Aliens 27
Explained: Mysterior Tower of Light in Shenyang, China General Discussion 3
Explained: "Jellyfish object" video in Russia [Rocket Launch] Skydentify - What is that Thing in the Sky? 11
Debunked: Claim that Bobby McIlvaine's injuries ("lacerations") are best explained as result of glass shards and debris from bombs 9/11 22
What exactly does “Explained:” mean in a thread title? Site Feedback & News 2
Explained: Birdwatcher's "Amazing UFO", Burwell Fen, UK. [C-130 Landing Lights] UFOs and Aliens 2
Explained: Tic-Tac UFO San Jacinto, Highway 62, California [Blimp] UFOs and Aliens 0
Explained: UFOs viewed from the ISS - Squid Boats UFOs and Aliens 17
Explained: UFO Filmed from a Helicopter in Kamchatka, Russia. May 31, 2021 [Fake] UFOs and Aliens 2
Explained: Video of Vandenberg UFO shooting down ICBM [reenactment] UFOs and Aliens 8
Explained: Student in Teignmouth, Devon sees UFO [Moon Obscured by Clouds] UFOs and Aliens 35
Explained: HomeSteadHow "UFO" Photos [Helicopter] UFOs and Aliens 54
Explained: Why Magnets Stick To Vaccination Sites (Or Your Nose) Conspiracy Theories 18
Explained: Odd Looking Bidens/Carters Photo - Not Fake, Just Perspective General Discussion 78
Explained: UFO Filmed With Telescope [Loon Balloon] Skydentify - What is that Thing in the Sky? 2
Explained: Sky Mapping at the Seattle Space Needle [Virtual, Not "Blue Beam] Conspiracy Theories 0
Explained: Why Biden is boarding C-32 instead of VC-25 Election 2020 35
Explained: Inaguration Photos from Different Angles Show Different Backgrounds. Election 2020 9
Explained: Exactly 5.55555556% (1/18) of votes for Trump across multiple precincts [Cherry Picked, Expected Ratios] Election 2020 20
Explained: Boris Johnson Photo With Confusing Reflection of Phone Cord Election 2020 12
Explained: Wingless Tic-Tac UFOs Moving Erratically Behind Trees UFO Videos and Reports from the US Navy 2
Explained: 9:33 AM ET Time on NPR Story about Storming the Capitol Election 2020 0
Explained: Covid-19 research with pre-2020 dates in Google search results Coronavirus COVID-19 4
Explained: "Disappearing needles" in Covid Vaccinations Coronavirus COVID-19 1
Explained: 82nd Airborne: "A Storm Is Coming" - Operation Devil Storm Conspiracy Theories 12
Explained: Fulton County, Georgia, "Suitcases" of Ballots being Scanned Election 2020 1
Explained: Red Mirages, Blue Shifts, and Data Dumps in the 2020 Election Election 2020 21
Explained: Trump's Claim of Suspicious Early Morning Michigan Bump [It's Detroit] Election 2020 1
Explained: New Navy UFO Videos UFO Videos and Reports from the US Navy 210
Explained: "Quantum Dots" - Storing medical information below the skin’s surface Coronavirus COVID-19 13
Polaris Height Perspective Explained (No math required) Flat Earth 1
Explained: RARE Video Footage of "Alien Space Craft" WATCHING ISS Astronaut! UFOs and Aliens 1
Explained: astronaut's movement causes lunar flag to wave in Apollo 15 footage Conspiracy Theories 0
Explained: The "Many Faces" of Patrick Crusius, the El Paso Shooter Conspiracy Theories 22
Explained: "Beam of Light" in To The Stars Academy header images UFOs and Aliens 0
Explained: "UFOS" in Donald Trump's Crowd Photo on 4th of July UFOs and Aliens 3
Explained: Photo of 747 with Contrails Only on One Side [Fake, April Fool] Contrails and Chemtrails 21
Explained: The Navy's New "UFO" Reporting Guidelines UFO Videos and Reports from the US Navy 32
Explained: "It's photoshopped because it has to be" Flat Earth 3
Explained: Jet Chasing UFO: X-45A and F/A-18B Formation Flight Skydentify - What is that Thing in the Sky? 6
Explained: video of concentric circular "chemtrails" (E-3 Sentry AWACS plane, Feb 1 2019) Skydentify - What is that Thing in the Sky? 3
Explained: How Mount Rainier helps demonstrate the shape of the globe Flat Earth 38
Explained: Why the Earth does not look oblate in photos from space Flat Earth 5
Explained: EU Army Deployed to Paris Conspiracy Theories 1
Explained: Unexplained Green Light During Thunderstorm [Water on Lens, Caustics] Skydentify - What is that Thing in the Sky? 7
Explained: Flashes of Light During the World Trade Center Collapse 9/11 5
Explained: House "Cut in Half", Tubbs Fire, Santa Rosa, Coffey Park Wildfires 0
Explained: Burnt Cars on California Beach [TV Set] Wildfires 1