DENJIRO: Today, I’ll show you a mysterious phenomenon using the power of water. I’ll be using this device here. It’s called an aspirator. By attaching this to a hose and running water through it, great force can be produced. Let me show you.
I’m going to attach a hose to the aspirator. To this nozzle on the side, I’m going to attach a tube that is connected to a plastic bottle. Now, let me run water through the hose.
GIRL: The bottle is getting crushed!
DENJIRO: Strange, no? Why did the plastic bottle get crushed? Let me explain what happened using this transparent aspirator. Its structure is very simple. Water from the hose enters the tube here. The tip of the tube that the water comes out of is narrow at the tip. Water flows out of here with great force and flows out of the tube on the bottom. Now, let me run water through the aspirator.
Air is taken in by the water that shoots out. Air is sucked in through the nozzle on the side. I’ve connected a plastic bottle to the nozzle on the side. When I run water through the hose, bubbles come out along with water. The bubbles are air that has been sucked in from the plastic bottle through the nozzle on the side. The air from the bottle comes out as fine bubbles.
GIRL: So, the bottle got crushed because air got sucked out.
DENJIRO: The aspirator is actually quite powerful. Let me show you using this square metal can.
GIRL: Wow! It got crushed!
DENJIRO: This simple mechanism can lower pressure with great force.
NARRATOR: Aspirators are widely used in labs as a device that lowers pressure and sucks in gas.
DENJIRO: I hope energy will bring you all happiness. Our magic word is "Happy Energy!"