They grind up your skeleton, remove the dental gold, then re-name it "ashes?" That's not very "green." Why not add this to your will: 1. place my body on a pile of dynamite on an Oregon beach, and blow it up (first…
Also, back in 1838, Charles Wheatstone reveales the secret of scratch-holograms, but he never followed up on it. http://amasci.com/amateur/holowhtstn.txt He did say that the 3D light-effect seen in lathe-turned metal…
It needs to make a polished groove or smooth surface-divot. Definitely use colored or black plastic, to promote surface-absorption. The real key is to eliminate jaggies. Either your steppers need micron resolution or…
All in HTML 1.0 written by hand, from Unix shell C, using pico. When I started, I was getting huge international traffic, from people seeing near-instant page-loading when using 2400 baud dialup. I think classrooms were…
A kid on Youtube invented the rotating version (scratching complete circles, then turning the plate.) Then an MIT student worked out a way to eliminate the second unwanted image; the pseudoscopic inside-out one. He gave…
Guy at MIT made huge numbers of them, using a robot-arm and sharp tool. He worked out an algorithm to interleave the short scratch-segments, so dense intersecting scratches don't ruin the image. His art is now in a…
Credit-card security holograms ...not true holograms either. Right? They need no monochromatic illumination. And they don't employ any interference in order to produce their 3d images. That's the whole trick, really.…
The light coming out of the scratch-hologram must be coherent. That means, the scratches must be mirrors (like smooth grooves, or bent silver wires, shiny curved spiderwebs.) Normal raster-displays emit incoherent…
Still alive. Mostly over on Quora now, answering science questions (posting Tesla stuff.) https://www.quora.com/profile/William-Beaty
It was started by a famous paper from Ludwig Prandtl, in ?1920?. The math is easy, if vortex-shedding is removed, and our wing has infinite span. Nobody realizes that an infinite wing is permanently trapped in…
But if air is pushed down, then it must continue moving down (much like with a hovering rocket, or a helicopter.) But this effect does not appear in typical airfoil flow-diagrams. Instead, the air approaches…
"There is no gravity in outer space. Gravity ends at the top of Earth's atmosphere. That's why astronauts in the ISS are weightless." Simple and concise. Easily understood by little kids. Textbooks in the 1950s actually…
It's wrong because the force on the lower airfoil surface is far smaller than the total lifting force. The flow above the airfoil "sticks" to the airfoil. Since the upper flow is being forced downwards by the curved…
If it's a 3D wing with finite span, then you're well into vortex-shedding and momentum-carrying plumes of gas. The usual way to avoid this is to make the wingspan be infinite, with no wingtips. But this is dishonest,…
His statement is right, but it requires that tip-vortices and downwash-plumes exist. The air behind the wing is carrying momentum, and is left with downward motion. (In typical 2D airfoil diagrams, this cannot happen.)…
Many generations of professional pilots have been taught the "equal transit theory." It's often as an answer their licensing exams. So, most pilots have little idea how wings actually work. (But since the rise of the…
Ocean waves work like this: water molecules are piled up in humps, and all the molecules slide across the ocean, while the water underneath the humps does not move. If you poured some dye into the waves, the water-humps…
He's wrong. All those explanations ARE intended to explain flight! They're given to professional pilots without qualifiers, presented as if they were complete explanations. (If they weren't, then the controversy would…
In 2D airfoil diagrams, first the parcels approach horizontally. Then they are mysteriously accelerated upwards. Then the airfoil accelerates them downwards. Then behind the airfoil, they're mysteriously accelerated…
I don't see it. "Longer path" is an incorrect explanation for why the air above the airfoil moves faster. Yet the air above the airfoil really does move faster, as that webpage correctly describes. (That webpage doesn't…
On the other hand, simple intuitive explanations may not lead to simple mathematical analyses. Things which are obvious and simple to grasp, may involve near-insoluable systems of equations! This seems to be the case…
It's not complicated, instead it's HERETICAL. It directly violates Bernoulli/Euler, because with downward accelerated air, the parcels continue moving down, long after the wing has passed by ...meaning that energy has…
Monthly meetings, Tesla-worshippers only. Also some UFO abductees and orgone-believers. Also Boeing engineers and radio hams. http://amasci.com/freenrg/oldmeet.html
https? We don' need no stinkin' https. We are from BEFORE GEOCITIES! Usenet Newsgroups forevah. See amasci.com 1995 timeline: http://amasci.com/news.html#older Also, see much recent activity on:…
Hot 4mm arcs, cuts through thin plastic, or sets fires. Since 2005, hobbyists started making cigarette lighters from these. Then someone started actually marketing them. Then someone else came up with a switched,…
They grind up your skeleton, remove the dental gold, then re-name it "ashes?" That's not very "green." Why not add this to your will: 1. place my body on a pile of dynamite on an Oregon beach, and blow it up (first…
Also, back in 1838, Charles Wheatstone reveales the secret of scratch-holograms, but he never followed up on it. http://amasci.com/amateur/holowhtstn.txt He did say that the 3D light-effect seen in lathe-turned metal…
It needs to make a polished groove or smooth surface-divot. Definitely use colored or black plastic, to promote surface-absorption. The real key is to eliminate jaggies. Either your steppers need micron resolution or…
All in HTML 1.0 written by hand, from Unix shell C, using pico. When I started, I was getting huge international traffic, from people seeing near-instant page-loading when using 2400 baud dialup. I think classrooms were…
A kid on Youtube invented the rotating version (scratching complete circles, then turning the plate.) Then an MIT student worked out a way to eliminate the second unwanted image; the pseudoscopic inside-out one. He gave…
Guy at MIT made huge numbers of them, using a robot-arm and sharp tool. He worked out an algorithm to interleave the short scratch-segments, so dense intersecting scratches don't ruin the image. His art is now in a…
Credit-card security holograms ...not true holograms either. Right? They need no monochromatic illumination. And they don't employ any interference in order to produce their 3d images. That's the whole trick, really.…
The light coming out of the scratch-hologram must be coherent. That means, the scratches must be mirrors (like smooth grooves, or bent silver wires, shiny curved spiderwebs.) Normal raster-displays emit incoherent…
Still alive. Mostly over on Quora now, answering science questions (posting Tesla stuff.) https://www.quora.com/profile/William-Beaty
It was started by a famous paper from Ludwig Prandtl, in ?1920?. The math is easy, if vortex-shedding is removed, and our wing has infinite span. Nobody realizes that an infinite wing is permanently trapped in…
But if air is pushed down, then it must continue moving down (much like with a hovering rocket, or a helicopter.) But this effect does not appear in typical airfoil flow-diagrams. Instead, the air approaches…
"There is no gravity in outer space. Gravity ends at the top of Earth's atmosphere. That's why astronauts in the ISS are weightless." Simple and concise. Easily understood by little kids. Textbooks in the 1950s actually…
It's wrong because the force on the lower airfoil surface is far smaller than the total lifting force. The flow above the airfoil "sticks" to the airfoil. Since the upper flow is being forced downwards by the curved…
If it's a 3D wing with finite span, then you're well into vortex-shedding and momentum-carrying plumes of gas. The usual way to avoid this is to make the wingspan be infinite, with no wingtips. But this is dishonest,…
His statement is right, but it requires that tip-vortices and downwash-plumes exist. The air behind the wing is carrying momentum, and is left with downward motion. (In typical 2D airfoil diagrams, this cannot happen.)…
Many generations of professional pilots have been taught the "equal transit theory." It's often as an answer their licensing exams. So, most pilots have little idea how wings actually work. (But since the rise of the…
Ocean waves work like this: water molecules are piled up in humps, and all the molecules slide across the ocean, while the water underneath the humps does not move. If you poured some dye into the waves, the water-humps…
He's wrong. All those explanations ARE intended to explain flight! They're given to professional pilots without qualifiers, presented as if they were complete explanations. (If they weren't, then the controversy would…
In 2D airfoil diagrams, first the parcels approach horizontally. Then they are mysteriously accelerated upwards. Then the airfoil accelerates them downwards. Then behind the airfoil, they're mysteriously accelerated…
I don't see it. "Longer path" is an incorrect explanation for why the air above the airfoil moves faster. Yet the air above the airfoil really does move faster, as that webpage correctly describes. (That webpage doesn't…
On the other hand, simple intuitive explanations may not lead to simple mathematical analyses. Things which are obvious and simple to grasp, may involve near-insoluable systems of equations! This seems to be the case…
It's not complicated, instead it's HERETICAL. It directly violates Bernoulli/Euler, because with downward accelerated air, the parcels continue moving down, long after the wing has passed by ...meaning that energy has…
Monthly meetings, Tesla-worshippers only. Also some UFO abductees and orgone-believers. Also Boeing engineers and radio hams. http://amasci.com/freenrg/oldmeet.html
https? We don' need no stinkin' https. We are from BEFORE GEOCITIES! Usenet Newsgroups forevah. See amasci.com 1995 timeline: http://amasci.com/news.html#older Also, see much recent activity on:…
Hot 4mm arcs, cuts through thin plastic, or sets fires. Since 2005, hobbyists started making cigarette lighters from these. Then someone started actually marketing them. Then someone else came up with a switched,…