Home

gravitaci

Gravitatci, often referred to as gravity or gravitation, is the natural phenomenon by which all objects with mass or energy attract each other. In everyday life it gives weight to objects and governs the motion of planets, stars, and galaxies.

Historically, gravity was described classically by Isaac Newton in the 17th century with the law of universal

Gravitation is described by a gravitational field, with the gravitational constant G setting the strength of

Observationally, gravity is inferred from planetary motions, tides, gravitational lensing, and the behavior of light in

gravitation,
which
states
that
the
attraction
between
two
masses
is
proportional
to
their
product
and
inversely
proportional
to
the
square
of
the
distance
between
them.
This
law
explains
planetary
orbits,
tides,
and
the
behavior
of
falling
objects.
In
the
20th
century
Einstein's
general
theory
of
relativity
reframed
gravity
as
the
curvature
of
spacetime
caused
by
mass-energy,
a
framework
that
accounts
for
effects
such
as
light
deflection
and
time
dilation
and
predicts
gravitational
waves.
the
interaction.
On
Earth's
surface
the
acceleration
due
to
gravity
is
about
9.81
m/s^2,
varying
slightly
with
location
and
altitude.
The
same
interaction
governs
motion
on
astronomical
scales,
from
satellite
orbits
to
galaxy
dynamics
and
cosmology.
In
modern
physics,
gravitation
is
one
of
the
four
fundamental
forces,
and
researchers
explore
gravity
in
quantum
regimes,
tests
of
general
relativity,
and
alternative
theories
of
gravity
for
cosmic
phenomena.
strong
fields.
Its
effects
are
essential
to
technologies
such
as
GPS
and
to
the
study
of
the
universe,
from
planetary
systems
to
the
large-scale
structure.
Gravitatci
thus
remains
a
central
topic
in
physics,
astronomy,
and
cosmology.