The pitch of each consecutive fret is defined at a half-step interval on the chromatic scale. Standard classical guitars have 19 frets and electric guitars between 21 and 24 frets, although guitars have been made with as many as 27 frets. Frets are laid out to accomplish an equal tempered division of the octave.
Pure water is not a good conductor of electricity. Ordinary distilled water in equilibrium with carbon dioxide of the air has a conductivity of about 10 x 10-6 W-1*m-1 (20 dS/m). Because the electrical current is transported by the ions in solution, the conductivity increases as the concentration of ions increases.
The Alps are growing just as quickly in height as they are shrinking. This paradoxical result comes from a new study by a group of German and Swiss geoscientists. Due to glaciers and rivers, about exactly the same amount of material is eroded from the slopes of the Alps as is regenerated from the deep Earth’s crust.
Water towers are able to supply water even during power outages, because they rely on hydrostatic pressure produced by elevation of water to push the water into domestic and industrial water distribution systems; however, they cannot supply the water for a long time without power, because a pump is typically required
Even though Supergirl (Kara Zor-El) was 12 when her parents sent her to Earth to escape Krypton to look after her baby cousin Superman (Kal-El), her pod was knocked off course and stuck in space and she was effectively stuck in time. By the time her pod reached planet earth, Kal-El had already grown up and become Superman while she was still young.