Make a yard of difference and enjoy outdoor Make a yard of difference and enjoy outdoor living with the new Flowtron Mosquito PowerTrap. Four set-and-forget computerized modes operate the unit automatically when mosquitoes are most active. The Mosquito PowerTrap mimics the breath, scent and body heat of humans to effectively attract mosquitoes, black flies, midges and other biting ...
The law of conservation of mass (sometimes referred to as the principle of mass conservation) is as follows: for any system closed to all transfers of matter and energy (both of which have mass), the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed.
the principle that in any closed system subjected to no external forces, the mass is constant irrespective of its changes in form; the principle that matter cannot be created or destroyed. Also called law of conservation of mass, conservation of matter. conservation of mass. 1. conservation of mass. A principle of classical physics stating that the total mass of a closed system is unchanged by interaction of its parts. The principle does not hold under Special Relativity, since mass and energy can be converted into one another.