Let's say a sound wave is traveling toward a microphone. The microphone picks up compressions and rarefactions as the wave passes by. When a compression hits the microphone, it receives a high amount of air pressure from the particles in that space. During a rarefaction, the air pressure is very low.
A: The Social Security Act was signed by FDR on 8/14/35. Taxes were collected for the first time in January 1937 and the first one-time, lump-sum payments were made that same month. Regular ongoing monthly benefits started in January 1940.nder the 1935 law, what we now think of as Social Security only paid retirement benefits to the primary worker. A 1939 change in the law added survivors benefits and benefits for the retiree's spouse and children. In 1956 disability benefits were added.
Creating the Commission on Civil Rights. President Eisenhower signs the Civil Rights Act of 1957 into law on September 9, 1957. On September 9, 1957, President Dwight D. Eisenhower signed into law the Civil Rights Act of 1957, the first federal civil rights legislation to be enacted since Reconstruction.Part I of the Act created a Commission on Civil Rights within the executive branch.n September 1957, just as the Civil Rights Act was on the verge of enactment, Arkansas Governor Orville Faubus used the National Guard to block the entrance to Little Rockâs Central High School to prevent nine African-American students from enrolling.