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Physics Facts

How Fast is Mach 1?

A Mach number is a common ratio unit of speed when one is talking about aircrafts. By definition, the Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in the undisturbed ... Continue reading

Mach 1: Fast planes and Ernst Mach

Single Molecule Electroluminescence

Incandescence and luminescence are two main ways of producing light. In incandescence, electric current is passed through a conductor (filament of a light bulb for example). The resistance to the ... Continue reading

(A) Silver oxide film exposed to DC current; (B) activated regions emitting light when conected to AC current; (C) zoom shows single molecule electroluminescence

Can You Miss the Earth?

Have you ever wondered why astronauts float in space? Well, it isn't because there is no gravity in space. Astronauts float because they are in constant free fall. If a baseball pitcher throws a ... Continue reading

Astronaut in free fall

The Equivalence Principle

Four hundred years ago--or so the story goes--Galileo Galilei started dropping things off the Leaning Tower of Pisa: Cannon balls, musket balls, gold, silver and wood. He might have expected the ... Continue reading

More Physics Facts

Atmospheric :

  1. Coming In Strong On Your AM Dial
  2. Does Earth Have Its Own Neon Sign?
  3. Somewhere Over Which Rainbow?
  4. Sonic Boom
  5. The Coriolis Effect
  6. The Doppler Effect
  7. The Sound of Turbulence
  8. Your Own Personal Rainbow?

Classical Mechanics:

  1. Can You Miss the Earth?
  2. Don't Make Waves
  3. What Makes a Frisbee Fly?
  4. Why Does A Golf Ball Have Dimples?
  5. Your Serve

Electricity:

Fundamentals:

  1. Bizarre Boiling
  2. Galileo Thermometers
  3. Get the Point?
  4. How Fast is Mach 1?
  5. How Lasers Work
  6. Kinetic Theory of Gases
  7. Many Happy Returns!
  8. Newton's First Law of Motion
  9. Newton's Three Laws of Motion
  10. The Fourth State of Matter
  11. The Physics of Sandcastles
  12. The Weakest Force
  13. Tick-Tock Atomic Clock
  14. Torque
  15. What Is An Atom?
  16. What Is Radiofrequency Energy (Rf)?
  17. X-Rays - Another Form of Light

Magnetism:

  1. Earth's Magnetism

Nonlinear Dynamics & Chaos:

  1. Poincare's Chaos

Optics:

  1. Delivered by TIR
  2. Does Your Brain Do Flips?
  3. Quick Change Artist
  4. Single Molecule Electroluminescence
  5. Ultraviolet Light

Quantum Mechanics:

  1. Antimatter Discovery
  2. Neutrinos to the Rescue
  3. Quarks
  4. The Early Universe Soup
  5. The Equivalence Principle
  6. The World's Largest Laser

Radioactivity:

  1. Carbon Dating From The Skies
  2. Fission and Fusion
  3. Nuclides & Isotopes
  4. When Do We Encounter Ionizing Radiation In Our Daily Lives?

Solid State:

  1. Can Wint-O-Green Lifesavers® Light up Your Life?

Thermodynamics:

  1. Ultraviolet Light

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