Density Basics Density is a measure of how much matter (mass) there is in a given amount of space (volume). Density basically describes how tightly packed the tiny particles that make up any substance/material are.
The angle and wavelength at which the light enters a substance and the density of that substance determine how much the light is refracted. The refraction of light by atmospheric particles can result in a number of beautiful optical effects like halos, which are produced when sunlight (or moonlight) is refracted by the pencil-shaped ice ...
Does shape and size effect density? | Yahoo Answers
Mar 29, 2009· Size and shape doesn't affect density; which is the mass per unit weight of the material, and is a characteristic of the material itself. However, it can affect bulk density or unit weight; which is the mass per unit weight of a given volume of particles of the substance (eg, grains of sand).