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With the standard consensus that the laws of physics are universal and do not change with time, physics can be used to study things that would ordinarily be mired in uncertainty.
For example, in the study of the origin of the earth, one can reasonably model earth's mass, temperature, and rate of rotation, as a function of time allowing one to extrapolate forward or backward in time and so predict future or prior events.
Physics is the natural science that involves the study of matter and its motion and behavior through space and time, along with related concepts such as energy and force.
One of the most fundamental scientific disciplines, the main goal of physics is to understand how the universe behaves.
Following the discovery of a particle with properties consistent with the Higgs boson at CERN in 2012, all fundamental particles predicted by the standard model, and no others, appear to exist; however, physics beyond the Standard Model, with theories such as supersymmetry, is an active area of research.
Areas of mathematics in general are important to this field, such as the study of probabilities and groups.
The understanding and use of acoustics results in sound control and better concert halls; similarly, the use of optics creates better optical devices.
New ideas in physics often explain the fundamental mechanisms of other sciences while opening new avenues of research in areas such as mathematics and philosophy.
Optics, the study of light, is concerned not only with visible light but also with infrared and ultraviolet radiation, which exhibit all of the phenomena of visible light except visibility, e.g., reflection, refraction, interference, diffraction, dispersion, and polarization of light.
Heat is a form of energy, the internal energy possessed by the particles of which a substance is composed; thermodynamics deals with the relationships between heat and other forms of energy.
And it's good news when guns are used for their purpose: to defend one's self.
In New Mexico, three criminals were shot dead by homeowners defending themselves.
Applied physicists use physics in scientific research.