Archimedes' principle of confusion regarding Archimedes' principle is the meaning of displaced volume. Common demonstrations involve measuring the rise in water level when an object floats on the surface in order to calculate the displaced water. This measurement approach fails with a buoyant submerged object because the rise in the water level is directly related to the volume of the object and not the mass (except if the effective density of the object equals exactly the fluid density). (note that this idea is not Archimedes' principle). Archimedes' principle Archimedes' principle states that the upward buoyant force that is exerted on a body
Archimedes (crater) in what he thought to be a mid-sized crater in the south of the rim of what is now Plato, between that crater (then as "Lacus Panciroli") and Mare Imbrium (then as "Mare Astronomicum"). The stretch of lunar surface between Archimedes and Autolycus was the site of the crash-landing of the Soviet probe Luna 2. This was the first craft to reach the surface of the Moon, landing September 13, 1959. By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Archimedes. The following craters have