John's Portfolio: before the x ray

Alexander Graham Bell, who had gained fame with the invention of the telephone, was summoned to use his makeshift metal detector on the dying president. Passing his "induction machine" over his body, the early metal detector only made ... Even scientists adapted cameras to telescopes and microscopes, thus creating the standard of recording objective scientific truth.9 Slow motion imagery, slowing down movements frame by frame then speeding them up to create simulated ...