Dig deeper at pwnphysics.blogspot.comOn this day in physics: 12 March 1954- Happy Birthday to Elena Aprile who turns 62 today. As per wikipedia: "She has been a Professor of Physics at Columbia University since 1986. She is the founder and Spokesperson of the XENON Dark Matter Experiment since 2002. Aprile is well known for her work with noble liquid detectors, and for her contributions to particle astrophysics in the search for dark matter." [Source]Word of the Day- Density is the measure of how compact the mass is per volume. It is calculated as mass divided by volume. When solids are placed in a liquid, objects more dense than the liquid will sink and objects less dense will float. Liquids when mixed together will sort based on their densities, the most dense closest to the bottom and the least dense towards the top.  Quote of the Day: "The great thing about science is that it's true whether you believe it or not."- Neil Degrasse TysonKeywords: Density, Mass, Volume