domingo, 16 de maio de 2010
segunda-feira, 20 de julho de 2009
A tortura é aceitável ? ...
Etiquetas: dilemas
sexta-feira, 22 de junho de 2007
UFOs physically explained -- it’s all about light
A dialog between me (Eu) and yourself (Tu) that explain the nightly sightings of UFOs:Tu : You told me that you can model any UFO with a computer using only physical laws. Can you explain it with simple words ?Eu: As I mention in the title it’s all about light. A computer modelization can be made with some work. Let us start with the physics behind the scene. Can you figure out the source of light? Tu: People talk sometimes about planets, satellites and meteorites but these are faint. Eu: Do you know that UFO’s databases ‘show’ that the UFO’s pursue the sunset(*)? Tu: Are you pointing to the SUN? Eu: Yes, of course indeed. Pick also the Full Moon nights. Tu: The Moon I can accept, but the sun is not visible by night. Eu: Yes, but Sun (or Moon) is not far away. At high altitude the sun is ‘closer’ than seen by people on earth ground. Tu: How high must we go to ‘see’ the sun? Eu: I would say 10000m, 11000m, and above. Airplane pilots are still seeing the sun and on the ground bellow them is dark night. Tu: Is it enough? Eu: Indeed. Tu: I will do the calculations to be sure. -- (later) – Tu: I’ve done the calculations for this particular event (location/date/time) and not even at 14000m we can see the Sun. You are telling lies to me. Eu: Then it’s about time to find a way to reach sunlight or moonlight when the Sun or the Moon is below the horizon. Tu: It’s impossible men. Everybody knows that light propagates in straight lines. Eu: Do you know what fiber-optics is all about? Tu: Again you are fooling me. There is no fiber-optics in the sky. Eu: In fact you do see that kind of stuff everyday. Tu: I miss your point. Can you be more specific? Eu: You see those artifacts by day, not by night. As UFO’s usually appear by night you forget about what you saw in the daylight. Yesterday evening I was looking to the sunset, and I saw a lot of ‘straight lines’ from horizon to horizon. Tu: Hah, those contrails from airplanes, are they fiber-optics? I’ve never heard such a think. Eu: What you see in the sky are columns of ice left behind the aircraft in the cold atmosphere. You can find beautiful photos of contrails in the net. They can persist for hours and extents for hundreds of miles. Tu: Do you mean that a column of ice can have fiber-optic properties? Eu:In fact you can search again the net and find beautiful photos of ice crystals. As I remember they adopt a shape dependent on the surrounding temperature and humidity. Tu: But they will be disposed in all sorts of directions. To have fiber-optics properties it seems that they have to be parallel to each others. Only in this way the contrail became transparent with lens effect to conduct the light inside the cylinder of ice. Isn’t it? Eu: Look close again to the photos of ice crystals. Notice that a lot of them have more mass in the periphery than in the interior. Tu: Yes, and what...? Eu: Now suppose that they are freely falling, slowly, due to the gravity, and the wind is steady, not turbulent, blowing transversal to the column of ice crystals. Don’t you figure out that they will become parallel aligned, with the heaviest bit of each crystal in the perimeter taking control of the direction it takes in the atmosphere? Tu: Now I can figure why UFO’s seems to fly with astonishing velocities. It’s all about light. And light is fast. Eu: Don’t get it wrong, they seems to move rapidly not because of the light speed but because the contrail is moving in relation to the observer and the Sun/Moon. The contrails keeps moving in relation to the Sun/Moon as they are attached to the rotating Earth and light is clearly seen in the discontinuities of the contrails, revealed not in white but decomposed in the spectrum of white light. Red, orange, green, blue and rotating! The colours rotate because the contrail is not fixed in the sky. The top of the contrail is pointed to the Sun/Moon and the angle between the sun and the contrail is always changing. The contrails also move slowly down in the direction of the ground. Tu: Only the discontinuities reveal the light? Eu: No, of course not. If you get the chance to be aligned with one top of the contrail, or within the proper angle, as pilots frequently do, they get a ‘flash’ of sunlight. If pilots follow a course that is parallel to the contrail they will relate that the aircraft is pursued by an UFO. If they attempt to approach the ‘course’ of the UFO it will appear to move far away almost instantly. The reports will tell about evasive techniques, intelligent behaviour, stealth properties, huge manoeuvrability and speed. Eu: You will figure it out. Consider it as your homework. Tu: Do you think that people will believe you? Eu: As usual only some guys will believe me. I assure you that some night in the future a pilot will start pursuing UFOs. Pilots will do the confirmation. Tu: How did you come with this simple solution? Eu: The complete explanation is not so simple. It is not available to the average people consumed in the day to day problems. But the solution of the problem only popped up after a few months of hardworking, search thru UFO databases, reading a lot of reports. Find the match of the evolution of aeronautics with the evolution of UFO reports. And the most principal ingredient is, as usual, hard thinking, just for fun. Tu: With this explanation you ruled out all ET’s stuff? Me: The only ET that I know about is my master in physics/cosmology. He comes from the future. You will not believe me. In another post I will address the daylight UFOs and electromagnetic effects and other stuff related to UFOs. ---------------------------------------------------------------Sidenote: Cold weather conditions favours the contrails at low altitudes and more sightings - Alaska, Canada and North Europe (see Hessdalen phenomena). Also the Artic ice sheet (or calm ocean surface) can favour reflections making possible to reach sunlight even farther away. (*) this is a generalization that admits exceptions. Thanks: Thanks to all pilots and ufologists that persistently gave us reports with glimpses of what really was seen. This post is dedicated to my friend and master in cosmology Alfredo Gouveia Oliveira The Evanescence Theory - start paper (Cosmology) |
terça-feira, 5 de junho de 2007
UFOs, OVNIs não existem realmente
A net está pejada de curiosos com atitudes religiosas divagando sobre o tema e o assunto fica desprestigiante em si mesmo.
Quem fala e publica sobre o tema ou quer ganhar notoriedade ou dinheiro abusando da crendice das pessoas.
Há uma ausência de atitudes críticas sobre o fenómeno, em boa parte porque os físicos não sabem ainda como abordar o assunto.
No entanto os avistamentos sucedem-se um pouco por todo o lado e a ciência fica calada.
Os cientistas são culpados de negligência pois, mais do que ninguém, têm a obrigação de procurar respostas que integrem o mundo observável. O cientista tem a obrigação de se manter curioso e interveniente.
Os OVNI's (Objectos Voadores Não Identificados ) existem ?
Existem pela certa.
É impensável descartar a evidência dos avistamentos registados e não explicados cientificamente.
Vamos debruçar-nos apenas sobre os que não têm explicação cientifica.
O que são os OVNI's ?
De certeza que é um fenómeno luminoso, e por vezes electromagnético, medidos e registados.
O que não são os OVNI's ?
Não existe evidência que permita afirmar que são 'Objectos', algo sólido, com superfície, volume, e muito menos seres extraterrestres.
A afirmação de que são Objectos é induzida por um erro de percepção da visão porque no acto de 'ver' é normalmente associado um objecto é a uma dada imagem visual.
Ainda não foi medido, registado ou capturado nenhum Objecto Voador.
Vou afirmar com muita segurança que não são Objectos e por consequência não são Voadores.
Qual o caminho, então ?
Miragem ? talvez. Na miragem vemos ali o que está noutro lado. Só que não será uma miragem no sentido habitual.
Através do que vemos e registamos temos de procurar a explicação do fenómeno.
Acredito que o universo é infinito e está pleno de outras formas de vida inteligente.
Só que para bem de todos os fabricantes de sonhos eles não estão aí à porta.
Para a sobrevivência da espécie humana não podemos acreditar que eles (os ET's) resgatarão o nosso futuro.
Não podemos esperar salvação de nenhum Além.
Temos de nos bastar a nós mesmos e tomar o futuro em mãos.
Temos que desmistificar tudo o que pudermos.
Irei avançar com as explicações devidas, mas devagar.
