rectangular glass tubing, coloured water, tongs, meaker burner, bbq lighter
Description:
With
the
tubing
filled
with
water,
hold
one
of
the
lower
corners
over
the
meaker
burner.
Introduce
some
food
colouring
to
the
tube
-
the
convection
of
the
liquid
toward
the
heat
source
is
visible
due
to
the
food
colouring.
PIRA 4B20.10