5 ms·
They are not microscopic! I can easily see the balls in the tips of ballpoint pens.
by margalabargala 4mo ago
They are not microscopic! I can easily see the balls in the tips of ballpoint pens.
- jurgenburgen 4mo agoThe BBC article even mentions that they are milliscopic, not microscopic. > 2.3-millimetre
- OneDonOne 4mo agoThe ball is not microscopic, but the tolerances required to make the ball spherical and fit into the socket are.
- margalabargala 4mo agoExactly, so this sentence is incorrect: > Ballpoint pen tips are microscopic tungsten carbide ball held inside ultra-thin steel sockets
- OneDonOne 4mo agoYes indeed, you are correct. My mistake.