11–20 of 59 posts
If I was a billionaire, I’d commission a lidar survey of the entire planet. The amount of stuff that seems to be hidden beneath forest and snow and mud and ocean is absurd.
what kind of lasers / lidar technology is this that is not reflected by trees?
You know how light reaches the forrest floor? So does LIDAR.
If you get raw data from a LIDAR device (as opposed to the usual commercial internally "processed and smoothed" relatively low frequency data stream) you get a high frequency noisy cloud.
The HF cloud includes returns that bounced from the upper canopy and returns that bounced from the forrest floor.
You write your filters to pick the features (tree tops, tree foor, canopy density estimates, etc) you're interested in.
It's also possible to map recent snowfall depths with LIDAR | microwave RADAR tweaks.
what kind of lasers / lidar technology is this that is not reflected by trees?
Earlier quoted context omitted.
What is exciting about Graham Hancock an easily debunked promoter of pseudoscientific theories? https://en.wikipedia.org/wiki/Graham_Hancock
Graham Hancock is a journalist and a compelling science communicator. He has pursued theories outside the orthodox views of conventional archeology and, at least with the younger Dryas impact hypothesis, more and more evidence points to the fact that he may be right and conventional archeology may be wrong. Smearing him as a promoter of pseudo-scientific theories without articulating your rationale is frankly weak-sa…
https://en.wikipedia.org/wiki/Graham_Hancock#Pseudoarchaeolo... https://en.wikipedia.org/wiki/Graham_Hancock#Orion_correlati... https://en.wikipedia.org/wiki/Graham_Hancock#The_Message_of_... https://en.wikipedia.org/wiki/Graham_Hancock#Atlantis_Reborn... https://en.wikipedia.org/wiki/Graham_Hancock#Ancient_Apocaly...
I'm sure they had their Homers and Platos.
This is exciting as someone who recently discovered Graham Hancock.
Earlier quoted context omitted.
Graham Hancock is a journalist and a compelling science communicator. He has pursued theories outside the orthodox views of conventional archeology and, at least with the younger Dryas impact hypothesis, more and more evidence points to the fact that he may be right and conventional archeology may be wrong. Smearing him as a promoter of pseudo-scientific theories without articulating your rationale is frankly weak-sa…
>Smearing him as a promoter of pseudo-scientific theories without articulating your rationale is frankly weak-sauce. https://en.wikipedia.org/wiki/Graham_Hancock#Pseudoarchaeolo... https://en.wikipedia.org/wiki/Graham_Hancock#Orion_correlati... https://en.wikipedia.org/wiki/Graham_Hancock#The_Message_of_... https://en.wikipedia.org/wiki/Graham_Hancock#Atlantis_Reborn... https://en.wikipedia.org/wiki/Graham_Hancock#An…
Is it possible that this is the reason they seek to smear Graham Hancock as a pseudo-archeologist?
Notably, Hancock isn’t the only one to inquire about the Orion’s Belt and the fact that the pyramids in Egypt follow an identical orientation.
Dr. Carmen Boulter of the University of Calgary. was featured in, the Pyramid Code, a 5-part documentary expositing a similar hypothesis. Of course mainstream Egyptologists dismiss her position as well without providing their own counter explanation or rebutting her arguments on their merits. [1]
Is it merely a coincidence that the pyramids follow the orientation of Orion’s Belt so precisely?
Are you really so certain that we should dismiss all theories that counter the prevailing orthodoxy?
Do you recall that the orthodox view was once that the sun circled the earth and it was heresy to claim otherwise?
Given all the things we know that turned out not to be so, would it hurt to keep an open mind and judge theories based on their evidence instead of the fact that old academics who have staked their careers and reputations on not being proven wrong may in fact be wrong sometimes?
[0] https://en.m.wikipedia.org/wiki/Younger_Dryas_impact_hypothe...
what kind of lasers / lidar technology is this that is not reflected by trees?
Good question! According to [1], they rely on finding holmes in the foliage: Lidar, of course, does not actually see through vegetation. Rather, it sees through holes in the foliage. Some of the multiple laser pulses it emits simply find openings between leaves and branches, in much the same way that sunlight filters through the forest canopy, continuing down to the ground. [1]: https://www.gislounge.com/next-generat…
It’s important to realize that the laser pulse doesn’t remain at the same diameter the whole time; it’s path looks like a cone, albeit a very narrow cone. By the time it hits the ground it can be a couple of metres in diameter.
That two metre wide bunch of photons is what is travelling through the canopy. Some fraction hit the top of the canopy and are reflected; some fraction of the reflected photons travel back in a straight line to the detector, the rest are lost to the environment. The same process repeats until the pulse hits the ground, and whatever photons are left reflect back.
The energy returned to the detector is a tiny fraction of the energy sent out.
Do these 'historic' finds serve any purpose for our future generations? Or would those trees have served our children better?
Earlier quoted context omitted.
>Smearing him as a promoter of pseudo-scientific theories without articulating your rationale is frankly weak-sauce. https://en.wikipedia.org/wiki/Graham_Hancock#Pseudoarchaeolo... https://en.wikipedia.org/wiki/Graham_Hancock#Orion_correlati... https://en.wikipedia.org/wiki/Graham_Hancock#The_Message_of_... https://en.wikipedia.org/wiki/Graham_Hancock#Atlantis_Reborn... https://en.wikipedia.org/wiki/Graham_Hancock#An…
The Younger Dryas Impact Hypothesis [1], which has a growing body of evidence to support it, if true, would cause a great deal of embarrassment to mainstream archeologists. Is it possible that this is the reason they seek to smear Graham Hancock as a pseudo-archeologist? Notably, Hancock isn’t the only one to inquire about the Orion’s Belt and the fact that the pyramids in Egypt follow an identical orientation. Dr. C…
Even if they did, so what? The Orion Correlation theory is an exercise in cherry-picking. You could pick any three, aligned celestial bodies and correlate them to some far-off date (there are other theories that state the pyramids align to the Northern Cross) - it doesn't mean anything without evidence to corroborate it. Where are all the artefacts?
> Are you really so certain that we should dismiss all theories that counter the prevailing orthodoxy?
No... We should dismiss all fantastical theories presented without evidence. "Mainstream" archeologists have been challenging Hancock's theories for decades, the issue is that every time he is caught trying to pass off fantasy as citizen science (see: The Mars Mystery) he simply pivots to something else.