Trying To Drink From The World's Longest Straw

Summary by Krater

The host tests the physical limit of how high water can be sucked up a tube using a vacuum pump and human lung power, reaching the theoretical limit of 34 feet and demonstrating the phenomenon of cavitation.

From the video

Answers: How high can you suck water up a tube?

• fluid dynamics
• vacuum pumps
• vapor pressure of water
• cavitation in pumps
• theoretical suction limit

What it concludes

• The theoretical limit for sucking water up a tube is approximately 34 feet or 10.3 meters, because the pressure required becomes lower than the vapor pressure of water.
• When you try to suck water up past the theoretical limit, the pressure drops below the vapor pressure and causes the water to boil inside the tube.
• Cavitation occurs when a vacuum pump creates vapor bubbles that collapse under higher pressure, which can damage pumps and systems.