The solar eclipse

 

The light beam travelling from star, has the similar bridge, like the steel girder has. The steel girder having a mass and the beam of light having any mass as the photon has not. The other one having no movement and the other one having the speed of light. Photon having the speed, has a mass by this way and the beam bends when passing the sun. The mass of Sun curvates the space around her and the light of star deviates on its track. The girder has a mass and the force of gravity curvates the girder between the supports. Both have the same meaning through the curvation and mass. The Energy = Mass times the Cover of Light in time unit. C is the constant coefficient, this means the mass variates.