With a glass-cutting knife cut the capillary tube through at the point "b," and allow the mercury to run out.
Now heat the bulb again, and at the same time heat the capillary tube over a second burner.
Cut off the capillary tube exactly at the upper level of the column of mercury, invert it and allow the mercury to run out.
The capillary tube is introduced and sealed in position, care being taken to expand the joint a little.
He dipped the point and held it in the sulphuric acid and blew through the capillary tube.
In short, the spiral thread is a capillary tube finer than any that our physics will ever know.
The thermometer is filled and the top of the capillary tube closed by the use of a small blowpipe flame.
1650s, "of or pertaining to the hair," from Latin capillaris "of hair," from capillus "hair" (of the head); perhaps related to caput "head" (but de Vaan finds this "difficult on the formal side" and "far from compelling, since capillus is a diminutive, and would mean 'little head', which hardly amounts to 'hair'"). Borrowed earlier as capillar (14c.). Meaning "taking place in capillary vessels" is from 1809. Capillary attraction attested from 1813. As a noun, "capillary blood vessel," from 1660s.
capillary cap·il·lary (kāp'ə-lěr'ē)
Of or relating to the capillaries.
Relating to or resembling a hair; fine and slender.