//Example 26.1
d_o=60;//Object distance (cm)
d_i=2;//Image distance (cm)
h_o=1.2*10^-2;//Object height (cm)
h_i=-h_o*d_i/d_o;//Image height (cm)
printf('Size of the image on the retina = %0.2e cm',h_i)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest