To keep<span> noise from entering your space, look for </span>sound<span> blockers</span>
when the two waves interfere with eachother to make a dark spot the periodic difference of the two waves is π . the wave length for 2π is 600nm
. ie. for π difference it is 300nm
travel through a vacuum at the speed of light. Other waves need a medium; sound waves need molecules that vibrate.
I think it is <span>Alpha rays.</span>
A diverging lens never produces a real image because the actual light rays never converge. They always diverge. ... A diverging virtual image is always SMALLER than the object. A converging virtual image is always LARGER than the object
