in 1822 German scientist made a list of ten common minerals from which hardness could be measured name the scientist find out the name given to the scale and give the scale also
Answers
Sir Humphry Davy, 1st Baronet PRS MRIA FGS FRS (17 December 1778 – 29 May 1829) was a Cornish chemist and inventor,[1] who is best remembered today for isolating, using electricity, a series of elements for the first time: potassium and sodium in 1807 and calcium, strontium, barium, magnesium and boron the following year, as well as discovering the elemental nature of chlorine and iodine. He also studied the forces involved in these separations, inventing the new field of electrochemistry. In 1799 Davy experimented with nitrous oxide and became astonished that it made him laugh, so he nicknamed it "laughing gas", and wrote about its potential anaesthetic properties in relieving pain during surgery.I THINK THAT THIS IS APPROPRIATE ONE.I NO I WILL TRY TO ANSWER IT AS SOON AS I CAN.