If wavelengths of light
from a definite region of the spectrum are engrossed by a material, then the
materials will appear to be the complementary color. If violet light with
wavelength of 400nm is immersed, the material will look yellow. If the material
engrosses blue you will perceive the color orange.
The last one, A decrease in the price of racket ball rackets
<span>The FCC (Federal Communications Commission).</span>
The United States does not have an official federal e-waste regulation system, yet certain states have implemented state regulatory systems. ... The EPA estimates that in 2009, the United States disposed of 2.37 million tons of e-waste, 25% of which was recycled domestically.