by78
General
How does the brush work in freefall?
You mean in a microgravity environment? I assume the bristles of the brush have some stiffness to maintain its shape and function. If you meant how the the brush was inked, that I can only speculate. I've noticed the brush is not inky black, as it would be the case if it were a traditional calligraphy brush dipped in charcoal ink. I wonder if the brush is pre-soaked/coated in some kind of chemical and sealed prior to liftoff, and the surface of the scroll too is coated in a chemical, with the result being that when she put the brush on paper, the two chemicals react to produce the black brush strokes.