What fraction of the entire electromagnetic spectrum is spanned by visible light?.

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

What sort of waves exhibit the doppler effect?

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. why did he expect a difference