Radiation. 1  Radiation is the emission of energy as waves or particles or rays. 2  Radiation does not require a medium to transfer energy. 3  Radiant energy is either reflected or absorbed by matter. 4  Energy that is absorbed increases the kinetic energy of the object. 5  This increases the temperature of the object.
The Pennsylvania Turnpike could also be considered one of the first Interstate Highways. On October 1, 1940, 162 miles (261 km) of the highway now designated Iâ70 and Iâ76 opened between Irwin and Carlisle. The Commonwealth of Pennsylvania refers to the turnpike as the Granddaddy of the Pikes.
Davison Freeway. The Davison Freeway was the first urban freeway constructed in the United States and is approximately five and a half miles long. The Davison Freeway was built in 1941 and 1942 and was opened in late 1942. From 1942 up until 1993, it was a county freeway, but in 1993 the freeway was transferred to state control and was named M-8.