[DOC] [TLE] History of the telescope - Wikipedia [PAR] The earliest known working telescopes appeared in 1608 in the Netherlands and 
are credited ... In 1611, Johannes Kepler described how a telescope could be 
made with a ... the process of silvering glass mirrors introduced by Lon Foucault 
in 1857; .... With a Convex lens, things nearer to be greater, but more obscurely. [DOC] [TLE] Kepler (print-only) [PAR] Johannes Kepler is now chiefly remembered for discovering the three laws of 
planetary ... He also did important work in optics (1604, 1611), discovered two 
new .... its advantages over the geocentric theory are in its greater explanatory 
power. ... a new design of telescope, using two convex lenses (Dioptrice, Prague, 
1611). [DOC] [TLE] History of the telescope. - Antique Telescopes [PAR] His telescope provided limited magnification--only 30 power--and a narrow field 
of view; ... Frederick Sesi at a reception where Galileo is demonstrating his 
instruments. 1611--Johannes Kepler switches from a concave eyepiece to a 
convex eyepiece. ... Although the lenses corrected for spherical abberation, they 
introduced... [DOC] [TLE] Kepler's legacy: telescopes and geometrical optics, 1611-1669 ... [PAR] Kepler's theory of the telescope is introduced by a formal but merely ... First, some 
combinations of a convex objective lens and a concave ocular lens ... the 
convexity of the objective lens the greater the magnification (proposition 115). .... 
was meant to give mathematical authority to the new instrument by demonstrating 
'the... [DOC] [TLE] Science - Ray Sahelian, M.D. [PAR] Pedometer Instrument for measuring walked distances that works by ... 
Ultrasound is a cyclic sound pressure wave with a frequency greater than the ..... 
In 1611 Johannes Kepler introduced a second convex lens, giving telescope ..... 
Propeller is a type of fan that transmits power by converting rotational motion into 
thrust. [DOC] [TLE] The Galileo Project | Science | Telescope [PAR] Johannes Hevelius observing with one of his telescopes [click for larger image]. 
The Telescope. The telescope was one of the central instruments of what has 
been called the ... lenses as we know them were introduced in the West [1] at the 
end of the .... As early as 1611, in his Dioptrice, Johannes Kepler had shown that 
a... [DOC] [TLE] Museo Galileo - In depth - Telescope [PAR] The first telescopes comprised two lenses at either end of the tube: the ... In 
addition to those of Galileo (1564-1642), they include the instruments devised by 
... power is given by the ratio of the focal lengths of the objective and the ocular. ... 
by Johannes Kepler (1571-1630) in his Dioptrice, published in Prague in 1611. [DOC] [TLE] Telescope English paper - Scribd [PAR] INTRODUCTION ... Loop is an optical instrument used to view objects whose size 
is small, while the ... In 1611, Johannes Kepler described how a telescope could 
be made with a convex objective lens and a convex ... using no more than one's 
naked eyegreater accuracy than a 5 power ... The second type, shown in fig. [DOC] [TLE] Open PDF file- 694 Kb - Exhibits on-line - Institute and Museum of ... [PAR] In the second half of the century, remarkable results were achieved by the Italian 
instrument-makers ... The English instrument-makers introduced some 
innovations, ... Portrait of Johannes Kepler, copy from the Jovian Collection, 
Florence, Istituto e Museo ... Keplerian telescope, which had two flat-convex or 
biconvex lenses. [DOC] [TLE] The Development of Telescope Optics in the Middle of the ... [PAR] contributions of Schyrl de Rheita and Johannes Wiesel to the development of the 
... The exit pupil is on the inside of the instrument and therefore the eld ... In 
Figure 2 we see that the consequence of the introduction of the erecting lens in ... 
terrestrial Kepler telescope is much greater than that of the Galilean or the simple
. [DOC] [TLE] Marko Marelic, Science in the Age of Galileo - Korcula.NET [PAR] The simple microscope, a single convex lens had long been known. ... In 1611 
Kepler suggested that still better results

Question: In 1611 Johannes Kepler introduced a second convex lens, giving this instrument greater power
Answer: a telescope