A logarithmic taper potentiometer has a resistive element that either 'tapers' in from one end to the other, or is made from a material whose resistivity varies from one end to the other. This results in a device where output voltage is a logarithmic function of the slider position.
One of the Best Medical Schools. Harvard Medical School is ranked 1st overall out of all ranked medical schools, 1st for research, and 8th for primary care education. While every accredited medical school offers quality educational opportunities, in general, students at this school receive a fantastic medical education.
Princeton is much more undergraduate-oriented (it has about 5,000 undergrads and about 2,500 grad students), while Harvard tends to focus more on its graduate programs (Harvard has about 6,500 undergrads and about 12,000 graduate students). Nonetheless, Harvard's undergraduate programs are still top-notch.