TRANSPORTATION AND GLOBAL WARMING. Because of its near-total dependence on petroleum fuels, the U.S. transportation sector is responsible for about a third of our countryâs climate-changing emissions. Globally, about 15 percent of manmade carbon dioxide comes from cars, trucks, airplanes, ships and other vehicles. Reducing transportation emissions is one of the most vital steps in fighting global warming â and solutions to the transportation problem are already available.
spectro-. 1. a combining form representing spectrum, in compound words: spectrometer. British Dictionary definitions for spectro-. spectro-. combining form.
A spectrophotometer is an instrument which is used to measure the intensity of electromagnetic radiation at different wavelengths. Important features of spectrophotometers are spectral band with and the range of absorption or reflectance measurement. spectrophotometer is an instrument which is used to measure the intensity of electromagnetic radiation at different wavelengths. Important features of spectrophotometers are spectral band with and the range of absorption or reflectance measurement.