In 1929, Edwin Hubble announced the greatest discovery in the history of astronomy since Galileo first turned a telescope to the heavens. The galaxies, previously believed to float serenely in the void, are in fact hurtling apart at an incredible speed: the universe is expanding…
Modern binoculars and scopes meet a variety of user needs. This Field Guide provides readers with a concise, organized reference that explains the functions and configurations of instruments commonly used by bird watchers, hunters, amateur astronomers, and military and law-enfor…
Glossary -- Fundamentals -- What are binoculars and scopes? -- How are these instruments used -- Basic optical system parameters -- Instrument size and weight. Pertinent eye parameters -- Structure of the eye -- Pupil size -- Interpupillary distance -- Resolving power -- Accomm…
Modern binoculars and scopes meet a variety of user needs. This Field Guide provides readers with a concise, organized reference that explains the functions and configurations of instruments commonly used by bird watchers, hunters, amateur astronomers, and military and law-enfor…
Modern binoculars and scopes meet a variety of user needs. This Field Guide provides readers with a concise, organized reference that explains the functions and configurations of instruments commonly used by bird watchers, hunters, amateur astronomers, and military and law-enfor…
Het ontstaan en ontwikkeling van de telescoop in 17e eeuws Europa met speciale aandacht voor Galileo Galilei
"Between 1608 and 1610 the canopy of the night sky changed forever, ripped open by an object created almost by accident: a cylinder with lenses at both ends. Galileo's Telescope tells the story of how an ingenious optical device evolved from a toy-like curiosity into a precision…
