Defined as the study of the mind and its behavior, psychology has broad applications in the modern world. The psychology degree is popular: the American Psychological Association states that psychology is the fourth most common major among U.S. students. Aside from academia, research and clinical counseling, a wealth of employment options exist.
rotating anode. focal track made of tungsten -rhenium which spins on the copper anode rotor and has molybdenum backing because these metals conducts it draws the heat away from the anode. - because the anode is rotating the electrons dont hit at the same spot everytime so the anode does not over heat. focal spot.
For train track spikes, see rail spike. Track spikes, or just spikes, are pointed protrusions usually made of metal, ceramic or plastic that are screwed into the bottom of most track and field shoes to increase traction and minimize the likelihood of slipping.here is considerable variation among track shoes depending on their intended use. Sprint spikes generally have a very stiff spike plate with the greatest number of spike wells. The taper is highest and most rigid in sprint spikes, maximizing the efficiency of energy transfer with each stride.