Doubts concerning the inversion of objects on the retina / by Marmaduke Berdoe.

  • Marmaduke Berdoe
Date:
1772
Catalogue details

Licence: Public Domain Mark

Credit: Doubts concerning the inversion of objects on the retina / by Marmaduke Berdoe. Source: Wellcome Collection.

    31/98 (page 25)
    / [ *5 ] retina ? An objeft placed at A B would by the different refractions which the rays of light undergo in palling thro’ the humors of the eye, be reprefented on the retina in the pofition C D, a circumflance, fay they, in- conteffable, and proved by tne lanCtion of experiments made in the camera obfcura. The inverfion of the objeCl on the retina, (by no ways conformable to our manner of feeing) furprized our celebrated obferver, and the circumflance embarrafled him to account for its caufe, and appeared fo mani- feflly evident in the experiment of the eye applied to the hole of the camera obfcura, that it induced him to look on it as fome- thing divine, or owing its influence to the fuperior faculties of the foul entirely* Change the pofition of an external object in what manner you will, yet according to the fyftem of Kepler, its pofition on the retina muff be entirely oppofed to its natural one; as again, the aClion of the foul in the fenforium commune will paffively oppofe its D lunation