Liquid nitrogen
Liquid nitrogen is nitrogen in a liquid state at an extremely low temperature. It is produced industrially by fractional distillation of liquid air. Liquid nitrogen is a colorless clear liquid with density of 0.807 g/ml at its boiling point and a dielectric constant of 1.43. Liquid nitrogen is often referred to by the abbreviation, LN2 or "LIN" or "LN" and has the UN number 1977. Liquid nitrogen is a diatomic liquid, which means that the diatomic character of the covalent N bonding in N2 gas is retained after liquefaction.
At atmospheric pressure, liquid nitrogen boils at −195.79 °C (77 K; −320 °F) and is a cryogenic fluid that can cause rapid freezing on contact with living tissue. When appropriately insulated from ambient heat, liquid nitrogen can be stored and transported, for example in vacuum flasks. Here, the very low temperature is held constant at 77 K by slow boiling of the liquid, resulting in the evolution of nitrogen gas. Depending on the size and design, the holding time of vacuum flasks (Dewars) ranges from a few hours to a few weeks. The development of pressurised super-insulated vacuum vessels has enabled liquefied nitrogen to be stored and transported over longer time periods with losses reduced to 2% per day or less.
Podcasts:
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lennon
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by Lenine
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by Lenine
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by Lenine
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by Lenine
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by Lenine
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by Lenine
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by La Union
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by La Union
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by La Union
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by La Union
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by La Union
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by Lenon
Trying To Make Me
by: LennonAre you sleeping, I wish I was
Are you dreaming, of someone to love
Do you know what I'm thinking but I guess you don't
Cause you'd have to be around to hear my thoughts
Tomorrow's another day, and today is yesterday
And I don't care what you think you have to say
Tomorrow comes and today is gone
And I'm sick and tired of everyone trying to make me
Somebody else
It's funny how you destroyed the better part of me
There's nothing left so there's nothing anybody can see
It's been 6 months now and you think you found everything
In a day I wasn't there, in a way you didn't care
Tomorrow's another day, and today is yesterday
And I don't care what you think you have to say
Tomorrow comes and today is gone
And I'm sick and tired of everyone trying to make me
Somebody else
I didn't settle, I just got lazy
But I could see where you'd make the mistake
I didn't try, I just gave up
It was better to leave than stay
It's easy when you're leaving
It's harder when you try to return
But I haven't got that far yet
And that's a lesson I never want to learn
I should know better and so should you
I m exactly where you left me
There was nothing better to do
Are you still sleeping?
Are you still dreaming?
I m finally leaving but your still mixing
Tomorrow's another day, and today is yesterday
And I don't care what you think you have to say
Tomorrow comes and today is gone
And I'm sick and tired of everyone trying to make me
Somebody else
Somebody else