When tiny amounts of hormones are cast into your bloodstream, they can evoke profound effects on organs far from the gland that secreted them. The endocrine glands that produce hormones -- the pituitary, pineal, thyroid, thymus, parathyroids, adrenals, pancreas and gonads -- are scattered throughout your body. Some hormones, such as estrogen, originate from several glands and tissues.
Psychrometer An instrument used to measure the water vapor content of the air. It consists of two thermometers (dry bulb and wet bulb). After whirling the instrument, the dew point and relative humidity can be obtained with the aid of tables.
A potentiometer (or pot) is an electrical device used to measure angular position. The user can therefore adjust the degree to which the potentiometer opposes electric current through it, simply by turning a shaft that is attached to the center of the potentiometer. As the resistance of the potentiometer changes, so does the voltage, which thus causes the potentiometer to act as a variable voltage divider. This varying voltage can be measured by the VEX microcontroller and is directly proportional to the angular position of the shaft connected to the center of the potentiometer.