Lectures on Physics has been derived from Benjamin Crowell's Light and Matter series of free introductory textbooks on physics. See the editorial for more information....

Index R...

radiation exposureBiological Effects of Ionizing Radiation
radio antennaWavelength of radio waves
radio receiverQ of a radio receiver
radioactive contaminationRadioactive contamination at Chernobyl
radioactive decayThe hot potato
 Probability distribution for radioactive decay
 Summary - Radioactivity
rainRain falling into a moving cart
rainbowColor and refraction
randomnessSummary - Randomness
ray modelSummary - Ray Model of Light
recoilA Cannon
recoilingAbsorbing an impact without recoiling?
reductionismThe Atom
reflectionReflection and Transmission
 Quantitative Treatment of Reflection
 Summary - Bounded Waves
 Interaction of Light with Matter
 The Principle of Least Time for Reflection
 Summary - Ray Model of Light
 Summary - Refraction
 Reflection and Transmission
refractionRefraction and the Principle of Least Time
 Summary - Refraction
 Refraction and the Eye
 Refractive properties of media
 Snell's law
 Index of Refraction
 Color and refraction
 Discussion - Refraction and Images
refrigeratorUsing a refrigerator to decrease entropy?
relative motionEnergy and Relative Motion
 The Principle of Relativity
 Summary - Relativity
release historyDownload and Release History
repeating phenomenaVibrations
repulsive gravityEvidence for Repulsive Gravity
resistorApplications of Resistors
resitanceResistance of a lightbulb
resonanceQ of a stereo speaker
 The Collapse of the Tacoma Narrows Bridge
 Putting Energy Into Vibrations
 Water in a U-tube
 Exercise: Worksheet on Resonance
rifleMomentum and kinetic energy in firing a rifle
RoemerThe Nature of Light
rotationIntroduction to Angular Momentum
 Types of Motion
roundingSignificant Figures
RutherfordThe Planetary Model of the Atom

Last Update: 2011-03-23