Dates
Characters
Theories and discoveries
83
Chinese
Loadstone compass
100
Hero of Alexandria
Expansion of air with heat
100
Hero of Alexandria
Laws of light reflection
130
Ptolemy
Geocentric cosmology of epicycles
550
Johannas Philoponus
Impetus keeps a body moving
890
Al-Razi
Atomic of matter and space
1000
Al-hazen
Reflection, refraction and lenses
1000
Al-hazen
Pinhole camera to demonstrate that light travels in straight lines to the eye
1121
Al-khazini
Gravity acts towards centre of Earth
1225
Jordanus Nemorarius
Mechanics of lever and composition of motion
1260
Roger Bacon
Empiricism
1267
Roger Bacon
Magnifying lens
1269
Pierre de Maricourt
Experiments with magnets and compass