Question

how do space pens work?​

Answer 1

Answer:

The space pen works in numerous conditions: upside down, from -50oF to 400oF, in a vacuum, and underwater. ... The pressurized nitrogen also prevents the air and ink from mixing within the pen so that the ink does not evaporate before use. When the ballpoint moves, the gelatinous ink within the pen becomes liquid.

Answer 2

Answer:-

$\huge\boxed{\blue{Space \: Pen}}$

The Space Pen was invented by Paul Fisher. In the nozzle of Space pen, Nitrogen is compressed so that the ink will come out and oppose the force.

These pens are used were gravity is low,. so that to maintain Pressure, for example- In Space and Under Water

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