Ityrus

Any suggestions about that?

As for the second law of Newton's dynamics: "The acceleration a of a body is parallel and directly proportional to the net force F acting on the body, is in the direction of the net force, and is inversely proportional to the mass of the body." The mass is the "quantity of matter" in a body, and in classical physics is assumed to be constant. Therefore, we can write this relation for the second law of dynamics: [math] \vec{F}=k\vec{a} [/math] Or, rather [math] \vec{F}=m\vec{a} [/math] Where m is the mass, a scalar and constant quantity.

StringJunky, you're right. Just I took several photos, and really I don't understand well which of them have longitudinal aberration and which one have lateral aberration. In fact, if you take a look at the two images in attachement, you'll find that in one of them the color ring that was created around the halo of the lamp is formed only of the colors red and orange, while the other's got all the spectrum. Oh, and remember to rotate your monitor when trying to detect the aberrations.

Hello, I'm new here. Yesterday I was on my bed taking some photographs of the lamp on the ceiling, with my Motorola EX130 mobile phone. The strange thing I noticed was that bringing the mobile in a certain inclination and position, before taking the photo, I could see all the colors of the visible spectrum around the fuzzy white halo which I'd already seen every time. In fact, now that I took the photo, the effect always arises again when I rotate my mobile by about 45°. Now I'm asking me, who haven't already studied optics (but I'm going to start next month): why did the different parts of the visible spectrum place themselves around the white halo of the lamp? And why have I found this behaviour only with my mobile, and not with my camera, which is much more sophisticated?