Teledioptricus

Observers using a refracting telescope of long

Refraction of Light, 1685

Johann Zahn, Light Projection Apparatus, 1685

Reversal of Image, 1685

Properties of Light, 1685

Sunlight Passing Through Lenses, 1685

Lines of Perception, 1685

Reversal of Image, 1685

Light Projection Through Telescopic Lens, 1685

science, optics, perspectives, dragon, seen from

Zahn, Johann, 29.3.1641 - 27.6.1707, German glergyman