In Struggle: SNCC and the Black Awakening of the 1960s. Cambridge: Harvard University Press, 1995. Collier-Thomas, Bettye, and V. P. Franklin, eds. Sisters in the Struggle: African American Women in the Civil Rights-Black Power Movement. New York: New York University Press, 2001. Dudziak, Mary. Cold War Civil Rights: Race and the Image of American Democracy. Princeton: Princeton University Press, 2002. Gilmore, Glenda.
No, an X-ray is not a mechanical wave. An X-ray is an electromagnetic wave. However, in polar molecules, an X-ray can cause the molecule to vibrate rapidly, just like a microwave oven can.
Gamma Rays and X Rays. Gamma and x rays (also called photons) are waves of energy that travel at the speed of light. These waves can have considerable range in air and have greater penetrating power (can travel farther) than either alpha or beta particles.