Johann Wolfgang Döbereiner discovered the concept of the law of triads in 1817.
1746
There's no exact date of discovery but it's around 300 BC.
The discovery and date of aluminum
what is the Discovery Date for mercury? please someone tell me!!!!!!!!!!!
He invented the x-ray in 1895. X-Rays were not "invented", they were discovered. The exact date of discovery was Nov 8, 1895.
Johann Pachelbel's parents were Johann (Hans) Pachelbel, and his second wife, Anna (Anne) Maria Mair. His exact birth date is unknown, but due to the date of his baptism, it is believed that he was born in August.
There is no exact date of discovery. Jupiter is visible to the naked eye and has been known since before the dawn of civilization.
Saturn has been visible as long as mankind can remember, so it does not have a discovery date.
on may 13 1846
Unfortunately, in October 1683, both his wife and child died from an attack of plague. ... Johann Pachelbel died at the age of 52 sometime in early March, 1706. The exact date of his death is not known; but as he was buried on March 9, it is assumed that he had died sometime between March 3 to March 7.
Mercury is one of the five planets visible to the naked eye, so it has been known since ancient times. However, its official discovery date is not applicable as it has always been observable in the night sky.
1782