History of the telescope
The earliest known telescope appeared in 1608 in the Netherlands when an eyeglass maker named Hans Lippershey tried to obtain a patent on one. Although Lippershey did not receive his patent, news of the new invention soon spread across Europe. The design of these early refracting telescopes consisted of a convex objective lens and a concave eyepiece. Galileo improved on this design the following year and applied it to astronomy. In 1611, Johannes Kepler described how a far more useful telescope could be made with a convex objective lens and a convex eyepiece lens and by 1655 astronomers such as Christiaan Huygens were building powerful but unwieldy Keplerian telescopes with compound eyepieces.
Poland
In the 19th century, throughout partitioned Poland, numerous amateur inventors, such as Kazimierz Prószyński, were eager to construct a film projector. In 1894, Prószyński was successful in creating a Pleograph, one of the first cameras in the world. The invention, which took photographs and projected pictures, was built before the Lumière brothers lodged their patent. He also patented an Aeroscope, the first successful hand-held operated film camera. In 1897, Jan Szczepanik, obtained a British patent for his Telectroscope. This prototype of television could easily transmit image and sound, thus allowing a live remote view. Following the invention of appropriate apparatus and technological development in the upcoming years, his then-impossible concept became reality.