Exton and Shah measured that distance as 0.12 meters, or 0.12 meters per cycle. Multiplying something measured in âmeters per cycleâ by something in âcycles per secondâ will give a measurement in âmeters per second.â That's the wave's velocityâthe speed of light.
The US declared war on Japan (unanimously in the Senate, and 388 to 1 in the House of Representatives) on 8 December 1941 thus entering WWII. The declaration was in response tâ¦o the bombing of Pearl Harbor on 7 December 1941.
About U.S., World War II Draft Registration Cards, 1942. The U.S. officially entered World War II on 8 December 1941 following an attack on Pearl Harbor, Hawaii. Just about a year before that, in October 1940, President Roosevelt had signed into law the first peacetime selective service draft in U.S. history, due to rising world conflicts. After the U.S. entered WWII a new selective service act required that all men between ages 18 and 65 register for the draft. Between November 1940 and October 1946, over 10 million American men were registered. This database is an indexed collection of the draft cards from the Fourth Registration.