Thursday, May 17, 2012

WHY MOON IS MAGNIFIED IN HORIZON

            Not only moon every astronomical object shows magnification on horizon. In fact the objects in horizon is far than zenith, then how? Actually it explained as an optical illusion, nearer horizon we compare the object with our terrestrial objects so we realized that which become big. But i didn't satisfy with this answer, because the absence of terrestrial objects it shows its magnification , So i try to find my own answer.
                         Our atmosphere is just like Plano convex lens and also our eye has a convex lens, due to the combination of these two lens we get an natural telescope and it magnifies in order of   (fo/fe)  where "fo" is the focal length of Plano convex lens, "fe" is the focal length of eye lens. In horizon refractive index of Plano convex lens is increases which enhance the focal length and hence magnification occur. Don't be think that the increase in contrast of moon in horizon due to this lens combination, it is happens due to the long distance which scatter the majority of light rays from the moon so we get a good big moon.
       " I have no evidence to prove that this so not to believe me."  

Monday, April 30, 2012

HOW ELECTROMAGNETIC INDUCTION

         Faraday's law states that change in magnetic flux produce an induced emf on the conductor, this emf is proportional to rate of change in magnetic flux. In physics it is enough to study electromagnetic induction, but how the flux change produce an induced emf . This was solved by Lorentz force , F = q[ E + v X B] where v is the velocity of charge 'q' in magnetic field 'B', why the two forces are just added without any vector consideration, this is tells that the magnetic field or electric field doesn't mutually affects. That is magnetic field only link with other magnetic field. 
           Consider a magnetic field and a conductor which cut the flux perpendicularly( yes, of course we can't cut by parallel plane) the relative motion of conductor and hence the free electrons in conductor influenced by the magnetic force q(v X B) this force generate a potential difference called induced emf. Note that the kinetic energy of the conductor 1/2 mv^2 is converted to the electric potential energy. This is why the work done by magnetic field is zero.
     Wait, then how magnetic substance attracts nails against gravitational energy, this will explained by my next post.

Thursday, March 22, 2012

SPIN AND SPINNING

                               What is the shape of electron? sphere,cube, or any other geometrical shape. It is not correct question because we cannot accept only a particle due to dual nature. Spinning motion only does particle not wave, yes of course it is spinning that gives spectral evidence so we must conclude that in atom electron behave as particle. Wait the standing wave nature explain the stability of electron so we tells that for orbit motion electron is wave but for spinning it is particle. Totally confusing to avoid this problem there is a great solution just forget this thing, that means it doesn't revolve and doesn't spinning. But we must care the experiment result for spinning. This was given by Stern Gerlac experiment but it is gives a quantised result that means spinning has only has discrete possible values this is called Spin.
            Positive or negative half spin means the spinning electron only posses two states for example assume that electron is like below shape and after quantised spin it become the second shape, but remember that electron only posses these two states or it is not a continuous rotation. You can't accommodate but it is true, so it is not a ordinary spinning something special, to resolve this confusion don't be picturised. In physics we first want reason, picturisation is second.
     So spin is a property of elementary particles like charge, it has no relation with ordinary spinning. And macroscopic objects doesn't shows this property.