As with other forms of electromagnetic radiation, X-rays can be described as coupled waves of electric and magnetic fields traveling at the speed of light (about 300,000 km, or 186,000 miles, per second).
Lock Haven, Pennsylvania. The city of Lock Haven is the county seat of Clinton County, in the U.S. state of Pennsylvania. Located near the confluence of the West Branch Susquehanna River and Bald Eagle Creek, it is the principal city of the Lock Haven Micropolitan Statistical Area, itself part of the WilliamsportâLock Haven combined statistical area.
The collapsed Kinzua Bridge at Kinzua Bridge State Park in Hamlin Township. Hamlin Township is a township in McKean County, Pennsylvania, United States. The population was 819 at the 2000 census. According to the United States Census Bureau, the township has a total area of 167.3 km2 (64.6 miÂ²).