Materials



DENSITY DEFINITION Density is defined as mass per unit volume. The symbol most commonly used for density is ρ (the lower case Greek letter rho). The capital letter D is also used. Density is an intensive property of matter, which means the size of a sample does not affect its value. Density commonly is expressed in […]

Density Definition in Science




You can coat chemicals on hands with hairspray to help keep them from wearing off.
Give your hands or any other skin a ghostly blue glow! It’s easy to do. Glowing Hands – Method #1 Rub petroleum jelly on your hands. They will glow bright blue under a black light. This is a great way to make any skin glow, including skin on your face. […]

Glowing Hands Science Project



Do you want food that glows in the dark? With the exception of certain types of phosphorescent fungi, edibles don’t tend to glow. However, there is some food that glows under a black light. The black light emits ultraviolet radiation, which excites atoms and causes them to release fluorescent light. […]

Food That Glows in Black Light