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Modern physics is often encountered when dealing with extreme conditions. Quantum mechanical effects tend to appear when dealing with "lows" (low temperatures, small distances), while relativistic effects tend to appear when dealing with "highs" (high velocities, large distances), the "middles" being
304:, sizes are much greater than that of atoms, and energies are relatively small. Modern physics, however, is concerned with more extreme conditions, such as high velocities that are comparable to the
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Very often, it is possible to find – or "retrieve" – the classical behavior from the modern description by analyzing the modern description at low speeds and large distances (by taking a
32:, sizes are much greater than that of atoms, yet very small in astronomical terms. Modern physics, however, is concerned with high velocities, small distances, and very large energies.
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Modern physics is an effort to understand the underlying processes of the interactions of matter using the tools of science and engineering. In a literal sense, the term
316:), and very high energies (relativity). In general, quantum and relativistic effects are believed to exist across all scales, although these effects may be very small at
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that developed in the early 20th century and onward or branches greatly influenced by early 20th century physics. Notable branches of modern physics include
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These are generally considered to be the topics regarded as the "core" of the foundation of modern physics:
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classical behavior. For example, when analyzing the behavior of a gas at
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61:
59:
58:
54:
50:
49:
46:
43:
42:
38:
37:
31:
27:
23:
19:
1591:The Martians
1293:
1255:Spectroscopy
1197:Aerodynamics
1175:Field theory
1004:Astrophysics
923:
818:Experimental
716:
671:
648:
506:atomic model
495:
474:
471:Planck's law
445:
435:
367:
362:
344:
340:
338:
295:
294:
273:
272:
146:
112:Astrophysics
18:
1515:Higgs boson
907:Statistical
823:Theoretical
800:Engineering
721:McGraw-Hill
653:McGraw-Hill
383:Fermi–Dirac
318:human scale
1700:Categories
1536:By periods
1354:Geophysics
1326:Cosmology
1024:Geophysics
1014:Biophysics
858:Analytical
811:Approaches
641:References
555:in general
508:in general
425:Max Planck
359:relativity
137:Geophysics
122:Biophysics
1579:By groups
1563:Astronomy
1399:Molecules
1233:Mechanics
1148:Astronomy
974:Molecular
875:Acoustics
868:Continuum
863:Celestial
853:Newtonian
840:Classical
783:Divisions
482:Hallmarks
357:(QM) and
180:Physicist
142:Mechanics
107:Acoustics
1685:Category
1510:timeline
1497:Graphene
1459:timeline
1428:timeline
1416:timeline
1389:timeline
1330:timeline
1315:timeline
1305:timeline
1267:timeline
1238:timeline
1221:timeline
1209:timeline
1192:timeline
1165:timeline
1153:timeline
1131:timeline
729:55006862
581:See also
234:Category
174:Research
100:Branches
87:timeline
74:Glossary
1711:Physics
1520:Neutron
1377:Weapons
1362:Fission
1277:Entropy
1058:Related
942:General
937:Special
795:Applied
278:physics
83:History
69:Outline
45:Physics
1367:Fusion
1272:Energy
1250:Optics
969:Atomic
924:Modern
774:Major
727:
682:
659:
423:, and
288:, and
232:
157:Optics
1438:tests
1394:Atoms
1372:Power
1347:tests
694:Notes
438:limit
64:Index
895:Wave
790:Pure
725:LCCN
680:ISBN
657:ISBN
490:and
184:list
890:Ray
385:or
332:of
1702::
702:^
678:.
655:.
450:.
292:.
284:,
1133:)
1129:(
1119:e
1112:t
1105:v
767:e
760:t
753:v
731:.
688:.
665:.
477:.
312:(
262:e
255:t
248:v
186:)
182:(
89:)
85:(
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