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.
The Stockholm International Peace Research Institute (SIPRI) measures annual military spending for most of the world's armed countries. According to SIPRI, the U.S. spent $618 billion on its military last year, more than three times the $171 billion budget of second place China. Based on SIPRI's 2013 data, these are the countries with the largest military budgets.