source of light

One of my students was wondering about my fascination with sci-fi films or more precisely with flying saucers and their bright lights. Actually, use of bright light in film is just one more reference to this most powerful phenomenon. "Let there be light." We talk of "seeing the light," "the light at the end of the tunnel," and the most contradictory "blinding light." I have included some photographs I took in 1974 in Jerusalem which trace my own fascination.