Thermometers 1 A thermometer is a device that measures temperature or temperature gradient, using a variety of different principles. The word thermometer is derived from two smaller word fragments: thermo from the Greek for heat and meter from Greek, meaning to measure.hermometers 1 A thermometer is a device that measures temperature or temperature gradient, using a variety of different principles. The word thermometer is derived from two smaller word fragments: thermo from the Greek for heat and meter from Greek, meaning to measure.
The absolute value of GDP in Rwanda rose â¬213 $490 million with respect to 2013. The GDP per capita of Rwanda in 2014 was â¬491 $662, â¬5 $23 higher than in 2013, it was â¬486 $639.
Rwanda - Climate. The high altitude of Rwanda provides the country with a pleasant tropical highland climate, with a mean daily temperature range of less than 2Â° C (4Â° F ). Temperatures vary considerably from region to region because of the variations in altitude. At Kigali, on the central plateau, the average temperature is 21Â° C (70Â° F ).