Luigi Galvani
The English word "galvanize" comes from an Italian scientist, Luigi Galvani. To ...
The U-2 is an old spy plane. It used to fly over the former Soviet Union. Now, the plane has a new name and a new mission. NASA calls the plane ER-2. Its new mission is to help spot toxic waste. A special instrument is on board the ER-2. It is called an imaging spectrometer. It measures wavelengths, or spectrums, of light. All materials absorb and reflect light differently. In other words, they have their own "spectral fingerprint." The spectrometer gives scientists the data they need to identify minerals. Scientists then make maps. They focus on areas near old mines. These areas are sources of pollution. The areas harm rivers and streams. Scientists use colors to show locations of different minerals. They look for high concentrations of dangerous minerals. The maps are very helpful. They pinpoint the exact location of toxic areas. They make clean up efforts easier and less expensive.
The English word "galvanize" comes from an Italian scientist, Luigi Galvani. To ...
Sarah loved the science fair at school. She never won, but she always had fun. Every year,...
In 1971, Dr. Voorhies was walking with his wife. They were on a farm in Nebraska. Dr. Voor...