Water
Commonly seen through the object
Reflections and refractions of light and objects
Lowest appx price
Free- from rivers, streams, etc.
Highest appx price
$60,000 per 750ml
Transparent material
Hydrogen and oxygen
Invention
There are many theories of its "invention," including religious theories (ex: as an element of Creationism) and scientific theories (ex: as a subset of the Big Bang theory). Water treatment methods were recommended dating back to 2000 BC in Greek and Sanskrit writings, and after 15000 BC the Egyptians discovered the principal of coagulation for water treatment.
