Uncategorized
- Math
How Far Away?
As you look around, you constantly make decisions about how far away something is–whether it’s a dog sniffing at a nearby tree or a friend down the street. If you were a surveyor, you could measure angles and then use high-school trigonometry to calculate distances. That’s great for drawing a map or establishing property lines, […]
- Earth
Bolts from the blue can have long reach
Current U.S. Air Force operating procedures recommend personnel stop working outdoors when lightning is spotted within 5 nautical miles, but a new analysis suggests that this distance may not be adequate to fully protect aircraft and ground crews.
- Earth
Southeastern Alaska is on the rebound
Scientists using the Global Positioning System to track ground movement along faults in southeastern Alaska have measured something entirely different—the rapid rise of parts of the region due to the recent melting of glaciers.
