Keyphrases
Optics
96%
Galileo
66%
Giovan Battista Della Porta
55%
SpyGlass
40%
Johannes Kepler
34%
Astronomical Telescope
33%
Scientific Instruments
33%
Astronomy
33%
17th Century
29%
Optical Properties
27%
Optical Element
27%
Ecliptic
26%
Francesco Fontana
22%
Optical Parts
22%
Optician
22%
Spherical Mirror
22%
Pinhole Camera
22%
Magician
22%
Historical Problems
22%
Novae
22%
Lens System
22%
History of Science
22%
Physics
Optics
100%
Scientific Instrument
44%
Telescope
33%
Novae
33%
Data Transmission
22%
Astronomers
22%
Euclidean Geometry
22%
Optical Position
22%
Optical Property
22%
Sensory System
22%
Reflected Wave
22%
Arts and Humanities
Optics
72%
Reassessment
44%
Galileo
44%
magician
22%
Concave
22%