Theoretical physics is a branch of physics
that employs mathematical models & abstractions
of physical objects & systems to rationalize,
explain & predict natural phenomena;
this is in contrast to experimental physics,
which uses experimental tools to probe
these phenomena; the advancement of science
generally depends on the interplay between
experimental studies & theory; in some cases,
theoretical physics adheres to standards
of mathematical rigor while giving little weight
to experiments & observations; for example,
while developing special relativity,
Albert Einstein was concerned w/ the Lorentz
transformation which left Maxwell's equations
invariant, but was apparently uninterested
in the Michelson–Morley experiment
on Earth's drift through a luminiferous ether;
Conversely, Einstein was awarded the Nobel Prize
for explaining the photoelectric effect,
previously an experimental result lacking
Expressionism was a modernist movement,
initially in poetry & painting, originating
in Germany at the beginning of the 20th century;
Its typical trait is to present the world solely
from a subjective perspective, distorting it
radically for emotional effect in order to evoke
moods or ideas; Expressionist artists sought
to express the meaning of emotional experience
rather than physical reality
                             or a theoretical formulation;
Neo-expressionism is a style of late modernist
or early-postmodern painting & sculpture that
emerged in the late 1970s; Neo-expressionists
were sometimes called Transavantgarde, Junge
Wilde or Neue Wilden ['The new wild ones'];
It is characterized by intense subjectivity & rough handling of materials