Physics History
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Ohm's Law
Ohm's law states that the current through a conductor between two points is proportional to the potential difference and inversely proportional to the resistance.
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Planck's Law
Planck's revolutionary idea of describing light statistically rather than as a continuous wave seeded the birth of quantum physics.
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Absolute Zero
If a substance is cooled enough it will become so cold that its atoms stop moving completely. This hypothetical point is called absolute zero.
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Brownian Motion
Brownian motion describes the jerky movements of small particles as they are buffeted by invisible water or gas molecules.
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Newton's Theory of Colour
Shine white light through a glass prism and the emerging rays of light will spread out in a rainbow of colours.
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Second Law of Thermodynamics
The tendency of hot and cold bodies to exchange heat and move towards an even temperature is captured in the second law of thermodynamics.
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Hooke's Law
Used in engineering, construction and materials science, Hooke's law shows how materials deform when forces are applied.
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Ideal Gas Law
First stated by physicist Emil Clapeyron, the ideal gas law describes how the pressure, temperature and volume of a gas are all interrelated.
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Johannes Kepler (1571 – 1630)
A mathematician, astronomer and astrologer, Johannes Kepler was a key figure in the 17th century scientific revolution.
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Ernst Mach (1838 – 1916)
Ernst Mach was an Austrian physicist and philosopher who established important principles of optics, mechanics, motion, wave dynamics and sensory experience.
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Newton's Law of Gravitation
Newton's law of gravitation is one of the most powerful ideas in physics, explaining much of the behaviour of the physical world.
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Kepler's Laws
As well as transforming the study of astronomy, Kepler's three laws laid the foundations for Newton's law of gravity.
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Isaac Newton (1643 – 1727)
Sir Isaac Newton was a pioneering physicist and mathematician and one of the foremost scientific intellects of all time.
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Newton's Laws of Motion
Newton's three laws of motion prove relationships between the forces acting on a body and the motion of the body.
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Mach's Principle
Mach's Principle states that 'mass there influences inertia here'.
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Jean Perrin and Atomic Theory
Jean Perrin brilliantly confirmed Einstein's ideas on Brownian motion by the empirically calculating Avogadro's Constant, conclusively proving Dalton's atomic theory
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Black-Body Radiation
In the final years of the nineteenth century, a new problem came to light which threatened to question the very nature of physical theories since the time of Newton.
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Early Particle Accelerators
The history of subatomic research is truly interesting - from the early laboratory experiments to capturing cosmic rays to the glory of modern accelerators.
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Tour the Secret City of Oak Ridge
Hop on a bus at Tennessee's American Museum of Science and Energy and travel back to WW II, to the Cold War, and on to today's world-class sub-atomic research facilities.
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The Secret Science of World War II
In 1942, a "secret city" sprang up in a Tennessee valley, as Allied scientists raced to beat the Germans at developing enriched uranium to fuel the first atomic bomb.
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The Origins of the Calendar
How did the modern calendar come to be? The history of the calendar illustrates our evolving understanding of the universe.
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Physics in the 21st Century
We this century see the end of active study in physics? Will we truly know the nature of the universe? Probably not.
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Phlogiston and Aether
Phlogiston and aether are the corpses of physical theories that didn't survive the onslaught of scientific scrutiny.
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The Trinity Test Site
The Trinity test site in New Mexico was the location where the first atomic bomb was exploded.
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Physics Through the Ages: Part 4
The early industrial age revved up the study of physics; industry and science were happy companions after the beginning of the Enlightenment.
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