A Lactometer is a little glass instrument that tests the purity of milk based on density/buoyancy and works on the principle of the specific gravity of milk.
This is an instrument used to determine the richness of milk. due to the specific gravity
De Mogan's Principle
The Archimedes Principle was created in 2004.
An example of Bernoulli's principle is an Airplane. Your Welcome[:
Yes, Archimedes is best known for his principle that is Archimedes' principle ( or the law of buoyancy )