CrazyEngineers
CrazyEngineers

  • Ink on talcum powder

    zaveri

    zaveri

    @zaveri-5TD6Sk
    Updated: Oct 21, 2024
    Views: 962
    Has anyone observed this : ?

    when a drop of fountain pen ink is poured on a spread of talcum powder, the drop dose'nt actually seep inside the powder mass, and soak it. but it retains its spherical shape, and remains as a kind of "fluidic ball".

    so how does this happen
    0
    Replies
Howdy guest!
Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a member of our community. Consider creating an account or login.
Replies

  • rahul69

    Member • Jan 6, 2013

    I think it happens because the adhesive force between ink and talcum powder is less than the cohesive force between the ink molecules. Thus helping it to retain spherical shape 😎
    Are you sure? This action cannot be undone.
    Cancel

  • Ramani Aswath

    Member • Jan 8, 2013

    It is similar to water drops on a lotus leaf. Fine particles of talcum act like the fine hairs on the leaf holding the water drop above the surface. Surface tension forms a natural spherical shape for the drop. If the drop is large it will deform to a flattened spheroid and ultimately break into smaller spherical drops.



    Are you sure? This action cannot be undone.
    Cancel
Home Channels Search Login Register