Vă rugăm să citiţi Regulamentul de utilizare a forumului Scientia în secţiunea intitulată "Regulamentul de utilizare a forumului. CITEŞTE-L!".
Creat de Electron, Aprilie 10, 2008, 10:08:32 AM
0 Membri şi 1 Vizitator vizualizează acest subiect.
Citat din: ParallaxIn a long row of lamps, the second--supposing the observer to stand at the beginning of the series---will appear lower than the first; the third lower than the .second; and so on to the end of the row; the farthest away always appearing the lowest, although each one has the same altitude; and if such a straight line of lamps could be continued far enough, the lights would at length descend, apparently, to the horizon, or to a level with the eye of the observer, as shown in the following diagram, fig.63 FIG. 63.Let A, B, represent the altitude throughout of a long row of lamps, standing on the horizontal ground E, D; and C, H, the line of sight of an observer at C. The ordinary principles of perspective will cause an apparent rising of the ground E, D, to the eye-line C, H, meeting it at H; and an apparent descent of each subsequent lamp, from A, to H, towards the same eye-line, also meeting at H. The point H, is the horizon, or the true "vanishing point," at which the last visible lamp, although it has really the altitude D, B, will disappear.
Citat din: ParallaxThe theory which affirms that all parallel lines converge to one and the same point on the eye-line, is an error. It is true only of lines equi-distant from the eye-line; lines more or less apart meet the eye-line at different distances, and the point at which they meet is that only where each forms the angle of one minute of a degree, or such other angular measure as may be decided upon as the vanishing point. This is the true law of perspective as shown by nature herself; any idea to the contrary is fallacious, and will deceive whoever may hold and apply it to practice.In accordance with the above law of natural perspective, the following illustrations are important as representing actually observed phenomena. In a long row of lamps, standing on horizontal ground, the pedestals, if short, gradually diminish until at a distance of a few hundred yards they seem to disappear, and the upper and thinner parts of the lamp posts appear to touch the ground, as shown in the following diagram, fig. 77. FIG. 77.The lines A, B, and C, D, represent the actual depth or length of the whole series of lamps, as from C to A. An observer placing his eye a little to the right or left of the point E, and looking along the row will see that each succeeding pedestal appears shorter than the preceding, and at a certain distance the line C, D, will appear to meet the eye-line at H--the pedestals at that point being no longer visible, the upper portion of each succeeding lamp just appears to stand without pedestal. At the point H where the pedestals disappear the upper portions of the lamps seem to have shortened considerably, as shown by the line A, W, but long after the pedestals have entered the vanishing point, the tops will appear above the line of sight E, H, or until the line A, W, meets the line E, H, at an angle of one minute of a degree. A row of lamps such as that above described may be seen in York Road, which for over 600 yards runs across the south end of Regent's Park, London.
Citat din: satonekUITA-TE CU ATENTIE SI CITESTE CAREFULLY CE A SPUS ROWBOTHAM: The lines A, B, and C, D, represent the actual depth or length of the whole series of lamps, as from C to A. An observer placing his eye a little to the right or left of the point E, and looking along the row will see that each succeeding pedestal appears shorter than the preceding, and at a certain distance the line C, D, will appear to meet the eye-line at H adica the line CD va intalni eventual H; iar linia AW va intalni eventual H (asta pentru diagrama #2). Acum uita-te cu atentie; ESTE VORBA DE DOUA DIAGRAME DIFERITE; INTR-UNA AI E PLASAT LA EYE LEVEL DEASUPRA LAMP PEDESTAL (DIAGRAMA #1) IAR IN A DOUA E ESTE PLASAT CHIAR LA INALTIMEA LAMP PEDESTAL (DIAGRAMA #2). Iar linia AB va deveni AW la o distanta foarte mare. Acum ai priceput?Uita-te si pe: http://www.sacred-texts.com/earth/za/img/fig76.jpg unde iti explica: A very good illustration of the difference is given in fig. 76. False or prevailing perspective would bring the lines A, B, and C, D, to the same point H; but the true or natural perspective brings the line A, B, to the point W, because there and there only does A, W, E, become the same angle as C, H, E. It must be the same angle or it is not the vanishing point.
Citat din: H5X25 din Aprilie 25, 2008, 06:33:37 PMAbel Cavasi, sper ca imi dai voie sa te contrazic. Numele meu este Paul Sebastian (daca accesezi lista de membri, numele apare chiar acolo, din motive tehnice nu am mai putut sa-mi accesez acel cont, de aceea l-am creat pe acesta).
CitatCred ca teoria sistemului planetar bazata pe geocentrism este corecta, pentru ca eu cred in ceea ce este descris in Geneza, capitolul 1. De aceea mi s-a parut fascinant sa citesc postarile lui sandokhan si/sau neon knight, pentru ca imi confirma parerea mea.
CitatLa celelalte pagini au fost discutate deja cred toate aspectele legate de aceste poze, inaltime, distanta, curbura inexistenta.
Citat din: Abel Cavaşi din Aprilie 27, 2008, 10:28:57 PMEşti dus rău... Încerc să port o discuţie raţională cu tine şi vii cu mereu acelaşi tip de mesaje.