### Winged Bull

An ancient Assyrian wall relief, depicting the symbol of a winged bull with the head of a human male.

### The Assumption and the Coronation of the Virgin

The Assumption and the Coronation of the Virgin is a woodcut created by Albrecht Dürer in 1510.…

### Eye Focusing on Object

"Showing how the image of an object which is seen is formed on the retina of the eye." —Croft 1917

### Printing Frame

Device used for contact printing that holds a negative against the photographic paper. The paper is…

### Curved Image

"If the object a be placed obliquely before the convex mirror, then the converging rays from its two…

### Inverted Image

"Slit A is a very small opening. The light coming from the soldier on the right shines through the slit…

### Light Correction of Blue and Red Lights using Spherical Lens

"Showing a system with chromatic difference of spherical aberration. O" ₌ image of O for red light;…

### Magic Lantern

"Let a candle c, be placed on the inside of a box or tube, so that its light may pass through the plano-convex…

### Concave Mirror with Image and Focus

"The focus of each point chose may be determined by tracing two rays from the point, and locating their…

### Image Beyond the Curvature of a Concave Mirror

"When the object is at a distance from the mirror somewhat greater than the center of curvature, as…

### Convex Mirror

"To explain this, let us suppose that the arrow a, is diminished by reflection from the convex surface,…

### Convex Mirror Reproducing an Image of an Arrow

"Rays from an object showing the reproduction of an image in a convex mirror." -Avery 1895

### Reflection by Convex Mirrors

"Parallel rays strike the convex mirror, reflect, and diverge as if they had originated from a virtual…

### Object in Plane Mirror

"The construction for the image produced by a plane mirror depends upon the fact that the image of the…

### Regular Reflection

"Regular reflection results from the incidence of radiant energy upon a polished surface. When a beam…

### Object Refracted through Biconvex Lens

"Showing how an object is refracted through a biconvex lens." -Avery 1895

### Sculpture

This sculpture depicts a female that has been layed to rest and her last earthly image is of the spirits…

### Virtual Image Formed on Spherical Surface

"O' is the virtual image of O formed at a spherical surface of centre C and radius CS." —Encyclopaedia…

### Column from Thebes

A column depicting carvings and images of life in Thebes.