Discussion on technology and how it could be used to assist spiritual development and NOT enslave us. This includes technology that will help us live in harmony with Nature (e.g.: "Lifter" technologies that could replace the petrol driven engine). Also, discussion of past and current scientific thought so that gems are not buried in the sands of time, and spiritual progress through science is achieved.
Here I copied some interesting information about optics in nature.
The angular resolution of the eye is determined by the focal length and the separation of the sensitive elements on the retina. This matches well the limit of angular resolution set by diffraction limit of the iris, the aperture of the main part of the eye lens. In the centre part of the retina, known as the mocula, the sensitive elements are cones spaced about 3 micrconmeter apart , matching the angular resolution of 5 mm diameter of the iris.
Eyes that depen on the focussing power of the front surface of a cornea are universal among the land vertebrates. The sharp focussing which is important in human eyes requires an optical system that is relatively free from chromatic and spherical aberations. There is no known system in nature for correcting chromatic aberration.
Camera lenses correct for this by using non-speherical surfaces, which are more difficult to make, but biological processes lead naturally to such a solution. In many types of eye, including human eyes, the front surface is non-speherical, with flattened outer edges; the radius of curvature of the outer parts is typically twice that of the centre. A second type of correction for speherical aberration is graded refractive index in the lens itself. Unlike single lens, human lens shows virtually no chromatic aberrations.
