Science is Magic

51

SECRETS OF THE BOTTLE

This trick works because of secret finger holes on the side of the bottle.

Inside are separate containers with very thin spouts leading up to the

neck. For liquid to pour out of a container, air must be able to get in to

replace it. Air can’t get in through the spout because the tiny particles

that make up liquid stick to each other and to the container’s walls.

This is called surface tension and it creates a barrier that stops air from

getting in through the tiny spout. However, each container has a

separate tube leading to the holes on the outside of the bottle. This lets

air in so the liquid can pour out. The magician can choose which drink

appears by choosing which holes to uncover.

... and the liquid

pours out!

The magician

covers the

holes to stop air

from getting in.

MILK CRANBERRY JUICE ORANGE JUICE

Surface tension

stops the liquid

from escaping.

The air

replaces the

liquid...

With the hole

uncovered,

air can now

get in.

The finger

is raised.

US_050-051_Inexhaustible_bottle.indd 51 12/09/2018 15:49