The law used in a syringe is Boyle's Law.
Here's a breakdown of how Boyle's Law applies to the functioning of a syringe:
-
Boyle's Law: This law states that for a fixed amount of gas at a constant temperature, the pressure and volume are inversely proportional. In simpler terms, if you increase the volume, the pressure decreases, and vice-versa.
-
Syringe Operation:
- When the plunger of a syringe is pulled outwards, the volume inside the barrel increases.
- According to Boyle's Law, this increase in volume causes a decrease in pressure inside the barrel.
- Since fluids move from areas of high pressure to areas of low pressure, the fluid outside the syringe (where the pressure is higher) is drawn into the syringe barrel (where the pressure is lower).
Therefore, the principle behind how a syringe works relies on the relationship between pressure and volume as described by Boyle's Law.
