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The Moon.jpgThe Moon "in flames"85 visitenessun commento
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The-Holographic-Principle.gifThe Holo...what?!?83 visiteNella caption NASA (che leggerete a fine intervento), ecco un esempio di quella che alcuni chiamano "Psico-Fisica", ossìa una sorta di StranaScienza che viaggia a metà strada fra la Razionalità, l'Irrazionalità e le baggianate da "Lab-Rats".
Per quanto attiene la nozione ed il contenuto del Principio Olografico, i riferimenti fatti dalla NASA nella caption Vi saranno sufficienti per trovare abbondanti informazioni al riguardo; per quanto attiene le implicazioni fisiche del suddetto Principio, invece...Vi suggeriamo di non sforzarVi troppo.
Siamo nel regno della Meccanica Quantistica (secondo i Fisici Classici), o della Fisica Teorica (a detta dei – chiamiamoli così – “Filosofi” della Fisica).
Oppure siamo in quello, molto più vasto e variegato, della Fisica da “Bar dell’Ateneo”: un regno fatto di baggianate suggestive ma indimostrabili e popolato da “scienziati” più vicini alle favole New Age piuttosto che a Planck, Bohr o ad Einstein (e, a proposito, un consiglio: attenzione a quelli che parlano e scrivono di “Oloscienza”…).
Morale: riempirsi la bocca di parole, a quanto pare, conferisce tono, carisma e popolarità (sia ai Grandi della Scienza, sia ai Politici); tuttavia si può comunque notare che non sempre una bocca piena di parole, se si ascolta con la dovuta attenzione ed il necessario spirito, riesce ad esprimere un concetto (che sia uno) di senso compiuto.
Pensiamoci e pensateci sopra...
Caption NASA:”Is this picture worth a thousand words? According to the Holographic Principle, the most information you can get from this image is about 3x1065 bits for a normal sized computer monitor. The Holographic Principle, yet unproven, states that there is a maximum amount of information content held by regions adjacent to any surface. Therefore, counter-intuitively, the information content inside a room depends not on the volume of the room but on the area of the bounding walls. The principle derives from the idea that the Planck length, the length scale where quantum mechanics begins to dominate classical gravity, is one side of an area that can hold only about one bit of information. The limit was first postulated by physicist Gerard 't Hooft in 1993.
It can arise from generalizations from seemingly distant speculation that the information held by a black hole is determined not by its enclosed volume but by the surface area of its event horizon. The term "holographic" arises from a hologram analogy where three-dimension images are created by projecting light though a flat screen. Beware, other people looking at the above image may not claim to see 3 x 1065 bits -- they might claim to see a teapot”.
MareKromium
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The-MoonSlide.jpgFrom Light, to Light (by Stefan Seip)55 visiteCaption NASA:"No special filters - or even a telescope - are required to enjoy a leisurely Lunar Eclipse. In fact, watched from all over the night side of planet Earth, these regular celestial performances have entertained many casual skygazers.
Still, this eye-catching picture of a Lunar Eclipse may look unfamiliar.
To make it, astroimager Stefan Seip set his camera on a tripod and locked the shutter open during the Total Lunar Eclipse of March 3, 2007.
The resulting image records the trail of the Moon (and narrower trails of stars) sliding through the night. Reddish hues common during the total phase of a Lunar Eclipse, are evident along the darker, slimmer portion of the Moon trail. (...)".MareKromium
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The-Red-Moon.jpgEclipsed Moonlight (by Jerry Lodriguss)56 visiteCaption NASA:"Moon watchers blessed with clear skies over the Americas, Europe, Africa and Western Asia enjoyed a total lunar eclipse.
Catching eclipsed moonlight, astroimager Jerry Lodriguss offers this view of the inspiring celestial event with the shadowed Moon accompanied by wandering planet Saturn at the left, and bright Regulus, alpha star of the constellation Leo, above.
The engaging composite picture was made by combining a filtered, telephoto image of the Moon and surrounding starfield with a telescopic exposure. The combination dramatizes the reddened moonlight while clearly showing the variation of brightness and color in Earth's not-so-dark shadow across the lunar surface".MareKromium
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TheCrescentMoon-GIF-080406_0939-46.gifYoung Moon (GIF-Movie; credits: Laurent Laveder)55 visiteCaption NASA, da "NASA - Picture of the Day" del giorno 11 Aprile 2008:"At first, he couldn't see it, but searching with binoculars along a cloudy western horizon near Sunset, photographer Laurent Laveder finally spotted a delicate Lunar Crescent. Captured in this dramatic picture on April 6th, 2008, from Bretagne, France, the Moon was only 15 h. and 38' old.
Its slight, irregular, sunlit arc opens upward just above the dark cloud bank near picture center. Of course, a crescent Moon in the early evening sky is a lovely sight often enjoyed by many. But finding the Moon when its slim crescent is still less than about 24 hours past the New Moon phase requires careful timing and planning, a challenging project even for experienced observers.
In this sighting, only about 0,8% of the Moon's disk appears illuminated.
Laveder notes that this is the youngest Moon he has spotted in 20 years of skygazing".MareKromium
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TheGreyIllusion.JPGThe "Same Color Illusion"56 visiteDa "NASA - Picture of the Day" del giorno 4 Ottobre 2009:"Are square A and B of the same color?
They are.
The above illusion, called the "Same Color Illusion", illustrates that purely human observations in science may be ambiguous or inaccurate. Even such a seemingly direct perception as relative color. Similar illusions exist on the sky, such as the size of the Moon near the Horizon, or the apparent shapes of astronomical objects. The advent of automated, reproducible, measuring devices such as CCDs have made science in general and astronomy in particular less prone to, but not free of, human-biased illusions".MareKromium
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TheMoon_Mars.jpgCompanions57 visitenessun commentoMareKromium
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The_Beautiful_Martian_Paving.jpgThe Beautiful "Martian Paving" (by Dr M. Faccin & Lunexit)58 visitenessun commentoMareKromium
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The_Faces_of_Mars.jpgSo different and yet always the same...59 visiteDa "NASA - Picture of the Day" del giorno 5 Maggio 2010:"Enthusiastic astro-artists ranging from expert to beginner, the youngest age 10, all contributed their work to this entertaining panel featuring different faces of Mars. Their sketches are all based on telescopic views of the Red Planet from earlier this year, near its 2010 Opposition.
Mars offers the best telescopic views at opposition, since that's when it is closest and opposite the Sun in planet Earth's sky. Arranged in a spiral pattern, the sketches are positioned to follow the Planet's rotation.
No canals are visible(!), but large surface markings such as the dramatic, dark Syrtis Major are easily identified. As often seen through an astronomical telescope eyepiece, the Planet's orientation is inverted, with Mars' north polar cap at the bottom".
Nota Lunexit: dunque, se leggete attentamente "tra le righe" (ma nemmeno tanto: il concetto formulato dalla NASA a noi appare chiaro), anche il Grande Schiaparelli era un cretino ed i "Canali" se li è sognati. Piuttosto triste come considerazione. Silente è la NASA, invece, allorchè si nota come la colorazione globale di Marte vari non solo da occhio ad occhio, ma anche - e abbastanza ovviamente - da stagione a stagione. Ah, già, ma questo tipo di considerazione non si può fare: la NASA ha già detto (e mostrato) che Marte è SEMPRE color salmone e giallastro (con tratti verdognoli) e quindi l'unica conclusione che possiamo trarre è che quasi tutti gli artisti che hanno ritratto il Pianeta Rosso in questo collage devono necessariamente soffrire di un qualche disturbo nella percezione del colore. Come noi, del resto...MareKromium
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The_Floodway_2005.jpgThe Flood-Way (by Michael Wirtz)2923 visiteIncontro fra paesaggio reale (Filippine) e fantasia (il Cielo)
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The_Galxy_Survey.gifLooking Southward...54 visite"...Do not fling away your fearless confidence for it carries a great and glorious compensation of reward.
You have need of steadfast patience and endurance, ...enjoy to the full what is promised..."
(Heb. 10:35-36)MareKromium
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The_Indwellers.jpgThe Indwellers (by Roberto Tremolada)60 visitenessun commentoMareKromium
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