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Fase

Fase is a term used in several Romance languages, most notably Portuguese and Spanish, to denote a stage or period within a process, development, or cycle. The word is cognate with the English "phase" and derives from Latin fase, ultimately from Greek phasis, reflecting its long history in scientific and everyday usage.

In the sciences, fase describes a state or step of a system. For matter, it refers to

In astronomy, "fase" appears in discussions of the Moon's phases, the sequence of illumination visible from Earth:

In physics and electrical engineering, fase denotes a phase angle or phase difference between periodic signals.

In general usage, fase can mean a particular stage in a project, development, or life cycle, with

the
phases
of
matter—solid,
liquid,
gas,
and
plasma—and
to
phase
transitions
such
as
melting,
freezing,
vaporization,
and
condensation.
Phase
diagrams
show
the
conditions
under
which
different
phases
are
stable.
new
Moon,
first
quarter,
full
Moon,
and
last
quarter,
repeating
roughly
every
month.
Similar
terminology
applies
to
the
phases
of
other
celestial
bodies
observed
from
Earth.
In
systems
with
alternating
current,
the
term
is
used
in
languages
that
spell
"fase"
rather
than
"phase"
to
refer
to
the
relative
timing
of
waveforms
and
the
concept
of
phase
shift,
which
affects
power
delivery
and
waveform
alignment.
the
meaning
dependent
on
context
and
language.