Boyle's Law demonstration, 4 of 5. Several marshmallows are placed inside of a vacuum bell. The bell is connected to a vacuum pump. A pressure gauge is used to monitor the pressure. When the pump is turned on, the gauge shows that the pressure decreases inside the bell and thus inside the gas trapped in the marshmallow bubbles. The overall volume of the marshmallows dramatically increases. According to the Boyle's Law, the volume of gas inside the bubbles must increase with the decreasing pressure. At some point, the bubbles start to burst and the volume of marshmallows decreases back to about original size, despite the pressure continuing to decrease. Then the air is let back into the bell and the pressure increases. The volume of the marshmallows decreases until, at atmospheric pressure, it becomes visibly smaller than the original volume. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Turtle Rock Scientific |
Bildgröße: | 5155 px × 3429 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |