Which one are you referring to?
The discovery and date of aluminum
Galileo held a pendulum up to his heart and timed the beats. This is what led to the discovery of measuring small amounts of time more accurately.
what is the Discovery Date for mercury? please someone tell me!!!!!!!!!!!
Saturn has been visible as long as mankind can remember, so it does not have a discovery date.
The telescope
1774
1808
1965
1782
1518 if you think of "discovery" as being found by Europeans.
convection currents discovery date
ryan shuck