This happens because the temperature at which oxygen changes from a gas to a liquid is about 13 degrees Celsius above that of nitrogen. The oxygen can be seen dripping from the can just as on a humid day you can see drops of water condense and drip from a can you take from the refrigerator.
Though you technically can join the military up to age 42, if you're 35 or over you'll need an age waiver if you've never been in the military before.
Best Answer: If memory serves me correctly the age is between 18 and 24 after 24 they(government) cannot make some one enlist if the draft was to be reinstated again. Now the maxium age to enlist voluntarliy is 42 years of age. you can also enlist at the age of 17 with parental consent. Source(s): prior military.