when we pressed the top of the pen,it pressed the pen ink inside down causing the spring to be compressed and the pen will come out
no you need special paper supplied by leapfrog, it calibrates the laser in the pen to tell the computer inside the pen where the pen is.
when we pressed the top of the pen,it pressed the pen ink inside down causing the spring to be compressed and the pen will come out
A shaky ball :P
The plastic coating of the pen is a solid, the INK inside, that shows what you wrote is a liquid, and there is no gas what-so-ever.
no, it can be inside too.
As you know with increasing attitude Atmospheric pressure decreases , so the pressure inside the pen is more compared to the its surrounding Are (i.e inside the Flight).When we are using the pen , the ink gets spilled due to varying pressure.Hence the caution.
Pen colour is the colour of the ink ejected from the pen when it is used for its intended purpose (writing, or drawing). It is not necessarily the colour of the pen itself, either the casing (the outside) or the appearance of the ink cartridge inside.
the first pen was a feather and ink and they used that idea by thinking about how the ink would stay inside of the bottom of the feather and they used that and made a plastic tube inside of the plastic and used that to create a pen if that answers your question ;P
-spring scales -the spring inside a pen -coil springs inside a mattress
use a pencil
In a hutch, pen, cage, or run in your garden or inside the house.