Sky lobbies are used in tall buildings to separate the building into different zones and make elevator travel more comfortable. Each lobby has local elevators that only serve one section of the building, while an express elevator travels between lobbies. This system reduces congestion and delays for elevator travelers. A sky lob is used in […]
National Dark Sky Week is an annual event in the US that encourages people to turn off unnecessary lights, especially outdoor lights, for a week to combat light pollution. It aims to improve visibility, save energy, and draw attention to the problems associated with light pollution. The event is held during the week of the […]
Blue Sky Laws protect US consumers from fraudulent dealings with businesses managing stocks, bonds, and securities. Companies must file disclosures with the state and SEC, and laws also govern brokers. The origin of the term is obscure, but it refers to protecting investors from false claims. Consumers can use knowledge of these laws to spot […]
The blue color of the sky is due to Rayleigh scattering, where gas molecules absorb all colors of light but blue light is scattered more efficiently. The color appears paler near the horizon due to more air, and the sky looks black from space. As you reflect on the clear blue sky, you may wonder […]
The sky is blue due to Rayleigh scattering, where blue light is scattered more than other colors by gas molecules in the sky. Leonardo da Vinci first understood and described this phenomenon in 1500. He was also an artist, inventor, and architect who was ambidextrous and described a predecessor to the helicopter. The sky is […]
