How do glasses work?

  1. Nurfninja profile image58
    Nurfninjaposted 6 years ago

    How do glasses work?

  2. Salil-music profile image70
    Salil-musicposted 6 years ago

    Glasses are basically optical devices, which fall under the category of Lenses. Mirrors also fall under the category of optical devices. The basic difference between mirrors and lenses is the underlying principle. Mirrors work on the principle of... read more

  3. oldhorse profile image69
    oldhorseposted 6 years ago

    When light that is traveling through air hits a glass surface at an angle, it changes  its  course.  Similarly, when light that is transmitted through glass hits air at an angle, it changes course again.  Optometrists use these two facts to bend light so that it is better focused for our eyes.  The cornea does something similar for our optic nerves, but sometimes our eyes are imperfectly shaped, become inflexible due to aging, etc.  So, we need the assistance of glasses to improve on what our eyes do naturally.