The source of Earth's solar power: The Sun. Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.
1 The average annual temperature in Vienna, Austria is a little cool at 9.8 degrees Celsius (49.7 degrees Fahrenheit). 2  Mean monthly temperatures vary by 21.5 C (38.7 F) which is a below moderate range.3  The range/ variation of diurnal mean temperatures is 7.3 C (13.2 F).verage Temperatures in Vienna, Austria. 1  The average annual temperature in Vienna, Austria is a little cool at 9.8 degrees Celsius (49.7 degrees Fahrenheit).
The currency of Austria is the Euro (EUR). As well, the people of Austria are refered to as Austrian. The dialing code for the country is 43 and the top level internet domain for Austrian sites is .at. Austria shares land borders with 8 countries: Czech Republic, Hungary, Slovakia, Slovenia, Liechtenstein, Germany, Italy, Switzerland.