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.
If GDP is calculated this way it is sometimes called gross domestic income (GDI), or GDP (I). GDI should provide the same amount as the expenditure method described later. (By definition, GDI = GDP.