filter funnel
funnel
A sieve.
You need a funnel.
Liquids are capable of changing shape, but they will always have a constant volume. If one were to pour a liquid into a random container, it would conform to the container, but not change physical volume in the process.
To pour liquid into a small mouth container. Like oil into an engine.
funnel
funnel
There is most likely a more efficient way to do this, but this is the best I can do for now.Notation: ( x , y ) where x is the amount of water in the 5-liter container and y is the amount of water in the 7-liter container1. Fill the five-liter container ( 5 , 0 )2. Pour the five-liter container into the seven-liter container ( 0 , 5 )3. Fill the five-liter container ( 5 , 5 )4. Fill the seven-liter container with the five-liter container, leaving 3 liters in the five-liter container ( 3 , 7 )5. Pour out the seven-liter container ( 3 , 0 )6. Pour the five-liter container into the seven-liter container ( 0 , 3 )7. Fill the five-liter container ( 5 , 3 )8. Fill the seven-liter container with the five-liter container, leaving 1 liter in the five-liter container ( 1 , 7 )9. Pour out the seven-liter container ( 1 , 0 )10. Pour the five-liter container into the seven-liter container ( 0 , 1 )11. Fill the five-liter container ( 5 , 1 )12. Pour the five-liter container into the seven-liter container ( 0 , 6 )
pour it into a known liquid volumetric container. One liter will always be one litter no matter the viscosity or special gravity of the liquid
As illustrated in the 1995 movie Die Hard 3 (Bruce Willis, Samuel K. Jackson), you can measure out exactly 7 liters in the following manner:Fill the 5 liter container, then use that 5 liters to fill the 3 liter container.Dump out the 3 liter container.What was left in the 5 gallon container is 2 liters. Pour this into the 3 liter container.Fill the 5 liter container again.You now have 7 liters : 5 in the large container and 2 in the smaller one.
A funnel or any container.
A sieve.
You have to have something else to build the 4 liters into. Call it The Tub.Fill the 5.Pour the 5 into the 3.That leaves 2 liters in the 5.Pour them into The Tub. You now have 2 liters in The Tub.Empty the 3.Fill the 5.Pour the 5 into the 3.That leaves 2 liters in the 5.Pour them into The Tub. You now have 4 liters in The Tub.QEDYou do not have a TUB, it is not in the problem.Fill the 5 liter containerPour it into the 3 liter container leaving 2 liters in the 5 liter containerEmpty the 3 liter containerPour the 2 liters from the 5 liter container into the 3 liter containerFill the 5 liter containerFill the remainder of the 3 liter container from the 5 liter containerSince the 3 liter container already had 2 liters in it, one liter from the 5 liter container will fill it leaving 4 liters in the 5 liter container.Solved
You need a funnel.
decanting
Pour from the 7 liter container into the 5 liter container until their levels are equal. Both containers will then have 6 liters in them.
-- Fill the 3 from the hose.-- Pour the 3 into the 5. The 5 container now has unfilled capacity of 2.-- Fill the 3 again from the hose.-- Pour the 3 slowly into the 5. It'll take only 2 to fill the 5 container.-- There is now 1 remaining in the 3 container. QED