Astronomy’s exam
Tags: Astronomy
blackboard electodinamics relativity Ruffini tensor university Wednesday, February 16th 2005 / by Davide Troise
This afternoon I’ve taken 30/30 in Astronomy’s exam. To celebrate this I publish a portion of the blackboard of an University room when, exactly 2 weeks ago, I lectured on tensorial formalism in relativistic electrodynamics… 
Note the gauge transformation and the power of electromagnetic tensor that show how electric and magnetic fields are a single physical object.
These occasional lectures of mine are intended as a complement to Prof. Remo Ruffini’s class on theoretical physics (he is a scientist that is like a mentor to me).
Technically this photo is taken in a room but without flash with an exposure of 1/3 seconds and ISO-50. After shooting I’ve erased all blue dominance (probably due to sky’s light coming from the window) by turning on black-white the color method since the only relevant colors are black (the blackboard) and white (the chalk).
