What are space pens?

Space pens were originally developed in 1965 Paul Fisher from Fisher Pen Company. Unlike the General beliefs, Fisher did not receive more millions of government contracts on his revolutionary cosmic pen. The actual retail price of the original 400 space pens sold by NASA was $ 2.95 per piece. Although originally intended only for the American space program, space pens later became popular with Soviet astronauts. Since 1967, they have been used on every space mission with a crew. Regular ink pens would not work in an environment of zero space gravity and the standard ink formula would evaporate in extreme heat or cold. However, the use of lead pencils has also become a problem for space managers. The main point could break and cause damage to the crew or sensitive electronics. The wood could be flared into the main fire in a clean oxygen environment. He needed a writing tool that would withstand extreme temperatures, wrote on any surface, maintainedThe ink flow in zero gravity and resisted breakage.

This is where Fisher's space pens have fulfilled its purpose. Spacious pens contain hermetically sealed ink cartridge filled with a special ink. Nitrogen gas is also pumped in this cassette to force the ink to flow without gravity. The tip at the ball point is a small ball of titanium, guaranteed that it will not tear from the rest of the pen. Spacious pens can write underwater and over oily surfaces. The ink inside the cosmic pen lasts temperatures from minus 150 degrees Fahrenheit to more than 300 degrees Fahrenheit.

Today, space pens have become even more popular with the general public. "Space Pen" is actually a trademark of Fisher Space Pen Company, although other pen manufacturers have developed models with similar properties.about gifts. Since the supply of ink is permanently protected from elements, it may take more than a hundred years.