Few of us realise how short the career of what we know as "science" has been.
Three hundred and fifty years ago hardly anyone
believed in the Copernican planetary theory.
Optical combinations were not discovered.
The circulation of blood, the weight of air,
Optical combinations were not discovered.
The circulation of blood, the weight of air,
the conduction of heat, the laws of motion were unknown; the common pump was inexplicable; there were no clocks, no thermometers; no general
gravitation; the world was 5000 years old; spirits moved the planets, alchemy, magic,astrology imposed on everyone's belief.
No comments:
Post a Comment