41. Long-term radiometer drifts can be mistaken for irradiance variations that can be misinterpreted as affecting climate. 42. Conventional bench top laboratory analysis during the first year was done using Radiometer Blood Gas and Electrolyte Analyzer. 43. This design choice necessitated the use of superfluid pumps in order to drench the radiometers in liquid helium. 44. Crookes was the inventor of the Crookes radiometer , which today is made and sold as a novelty item. 45. The use of radiometers to determine the temperature of objects and gasses by measuring radiation flux is called pyrometry. 46. Other examples of microwave radiometers on meteorological satellites include the WindSat, Microwave Sounding Unit and Microwave Humidity Sounder. 47. Using a static antenna simplifies the antenna system dynamics and improves the time-bandwidth product of the radiometer . 48. This is a broadband infrared radiometer with sensitivity for infrared radiation between approximately 4.5 �m and 50 �m. 49. Upon entering the instrument, the signal from the antenna is separated into three signals for processing by different radiometers . 50. Examples of passive remote sensors include film photography, infra-red, charge-coupled devices, and radiometers .
