When the bottle is squeezed, the pressure inside the pen cap increases. This increase in pressure causes the air trapped inside the pen cap to compress, resulting in a decrease in volume.
The volume of a pen cap can vary depending on its shape and size. Typically, pen caps are cylindrical or conical in shape and have a volume of around 0.5-1 milliliter.
I would think that it would be called the pen cap or the cap of a pen. Top of the pen or pen top may also be used. But I don't really believe that the lid of a pen is the correct use of the word "lid" in the phrase.
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The side of the pen where the clip or cap is located is typically considered the top side.
you are thinking
Capping a pen helps to prevent the ink from drying out. When the cap is placed on the pen, it creates an airtight seal that keeps the ink from evaporating or becoming exposed to air, which can cause it to thicken or solidify.
A ballpoint pen is just a pen with a cap. A regular pen is one that clicks. They both work the same though.
A Biro pen is typically around 5.5 inches in length, including the pen cap.
It is not if u swallow just a little bit but if you swallow a pen full you could possibly vomit but it is not fatal.
Yes it is possible... I once swallowed one in the 9th grade by chewing on it and then hiccuping. It went right down my throat as if it were food. It was longitudinal so it went down easily. If it were horizontal it would obviously be painful and could cause harm... either that or impossible. It would also trigger your puke reflexes. If you do swallow a pen you need to go to the doctors for it could cause harm to your intestines and cause inner bleeding.
The density of a pen cap would vary based on the material it is made of. Generally, plastic pen caps have a density around 1.0-1.2 g/cm3, while metal pen caps would have a higher density, typically around 7.8 g/cm3 for steel.