i see all of these cool things to do on the internet like freezing
fruit and making icecream and i am really interested in experimenting
with liquid nitrogen buy i do not know where to go and buy some if you
know of a place please give me a name number and email adress so that
i may contact them thanks for the help

If you are looking to obtain liquid nitrogen just to play - oops, I
mean experiment - with, I am thinking that you are going to find it
much too expensive and cumbersome to get any on your own.  The minimum
quantity that the company that supplies my lab will sell comes in a
160L dewar that is five feet tall and weighs probably 100 lbs.  It
costs ~$170 just for the nitrogen, not to mention the delivery and
cylinder rental fees.  I doubt anybody is going to sell you a thermos
full.

Besides the cost, liquid nitrogen is not a toy despite what you might
have read on the internet.  There is a serious risk of severe
frostbite and even death from asphyxiation.  You also need the proper
equipment to handle it, else it will quickly boil away or cause a
sealed vessel to explode.

If I misread your post and you are actually someone who can handle the
above, going to local.google.com and searching for "welding supply" or
"gas supply" in Houston or Austin should give you some places to
start.  Or make friends with someone who works with it and will let
you "borrow" some for a couple of hours.

When I first saw this, my reaction was that what you are proposing is
really dangerous.

A quick search of the Net came up with two similar questions on GA
ID:508536
ID:26108    <--- read that one carefully - the Answer is very informative

There is a chain called AirGas  ( http://www.airgas.com/ ) that sells
liquid nitrogen, they have stores/outlets near Austin and Houston, I
can't determine whether those outlets stock Liquid Nitrogen.