A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in mathematical terms. Physicists work across a wide range of research fields, spanning all length scales: from sub-atomic and particle physics, through biological physics, to cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: experimental physicists who specialize in the observation of natural phenomena and the development and analysis of experiments, and theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their knowledge towards solving practical problems or to developing new technologies.

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Astronauts fly Albert Einstein doll to demo physicist's 'happiest thought'

Can We Live Longer? Physicist’s Breakthrough Discovery in Genetic Protective Layer

Kurt Gottfried, Physicist and Foe of Nuclear Weapons, Dies at 93

Never Shower During a Thunderstorm. A Physicist Explains Why

Physicist Claims To Have Solved the Mystery of Consciousness

Artificial physicist to unravel the laws of nature

Congress’ Only PhD Physicist Talks Energy Policy And Why It Made Sense For The Obama Administration To Bet On Elon Musk And Tesla

‘Elusive’ profiles the physicist who predicted the Higgs boson

Can we time travel? A theoretical physicist provides some answers

The aliens are all hanging out on Dyson spheres circling white dwarfs, physicist argues

The aliens are all hanging out on Dyson spheres circling white dwarfs, physicist argues

The aliens are all hanging out on Dyson spheres circling white dwarfs, physicist argues

Physicist uses intuition, supercomputers to identify new high-temperature superconductor

Electronic skin: Physicist develops multisensory hybrid material

The Standard Model of Particle Physics May Be Broken – A Physicist at the Large Hadron Collider Explains

There's One Way Time Travel Could Be Possible, According to This Physicist

A Decade of Science and Trillions of Collisions Show the W Boson Is More Massive Than Expected – A Physicist Explains What It Means

A decade of science and trillions of collisions show the W boson is more massive than expected — a physicist on the team explains what it means for the Standard Model

Digital Data Could be Making our Planet a Bit Heavier, Claims Physicist

Digital Data Could Be Altering Earth's Mass Just a Tiny Bit, Claims Physicist