How Goal Zero measures battery capacity. The correct unit for measuring energy capacity of a battery product is called watt-hours. Watt-hours signifies that a battery can supply an amount of watts for an hour. For example, a 60 watt-hour battery can power a 60 watt light bulb for an hour. The same battery would run a 5W phone for 12 hours and power a 1W LED light bulb for 60 hours.
Blood flows into the right atrium, through the tricuspid valve, into the right ventricle, through the pulmonic valve, into the pulmonary artery, through the lungs, out of the lungs into the pulmonary vein, into the left atrium, through the mitral valve, into left ventricle, through the aortic valve, into the aorta, and out to the rest of the body.
The blood first enters the right atrium. It then flows through the tricuspid valve into the right ventricle. When the heart beats, the ventricle pushes the blood through the pulmonic valve into the pulmonic artery. This artery is unique: It is the only artery in the human body that carries oxygen-poor blood.