A horseshoe vortex cloud photographed at KVIS on the 1/11/2016. A rare seldom-seen cloud formed by adiabatic cooling along the axis of a curved short-lived spinning vortex of air

Readings in Physics

• Errors Are Not Mistakes Click
• Error Propagation Click
• The Motion of Falling Bodies Click
• Questions Click
• Projectile Motion Click
• Questions Click
• Banking, Leaning and Conical Swings Click
• Of Schoolmen and a Flat Earth Click
• Questions Click
• of Mass Click
• Damage in collisions Click
• Questions Click
• Bernoulli's Equation Click
• Air Pressure as the Rate of Change of Momentum Click
• Horsepower and Steam Click 
• Questions Click
• Stokes's; law and Laminar Flow Click
• Black Body Radiation. Click
• Questions Click
• Heat Loss and Personal Experience Click
• Convection and Heat Transfer in the Atmosphere Click
• Questions Click
• Adiabatic Cooling in the Atmosphere Click
• Questions Click
• Hybrid Contrails Click
• What Did Carnot Do? Click
•  Aperture Diffraction Patterns Click
• Diffraction Coronae Click
• Fogged Lenses and Pollen Coronae Click
• Wave Motion 1 Click
• Internal Waves Click 
• Questions Click
• Brushes Click 
• Questions Click
• Rattlebacks Click   
• Questions Click
• Visual Delay Click 
• Radiation Matters Click
• Misconceptions in Physics Click 
• Appendix Click
• Demonstrations in Physics Click 
• Digital Errors Click 
• Centre of Mass Click 
• Triangle 1: Centre of Mass Click
• Triangle 2: Equilibrium Click 
• Triangle 3: Motion of the c.m. Click
• Media Click
• Constant Acceleration Click 
• cmbl Click
• Free Fall with Recorded Sound Click
• Free Fall with Video Analysis Click 
• Free Fall with Air Resistance Click 
• The Kinematics of a Bouncing Click 
• Friction Click
• Skid Distance Click 
• Work and KE: Impulse and Momentum Click 
• Impulse and Momentum Click
• Simple Pendulums Click
• SHM Damped by Friction Click 
• SHM Damped by Viscous Drag Click
• SHM Damped by Hysteresis Click
• Drag in Turbulent Flow  Click
• A Physical Pendulum Click
• Surface Tension Click
• A Model Odometer Click 
• Centripetal Force Click 
• Torque Click
• Rolling Resistance Click
• The Bernoulli Effect Click 
• Graphic Click
• Density Invariant Properties of Solutions Click
• Heat Transfer by Convection Click 
• Thermal Conductivity Click
• Planck Black Body Relationship Click
• Thermal Expansion of Water Click
• An Elementary Heat Engine Click 
• Viscosity from First Principles Click 
• Manometers and Siphons Click
• ​Air Pressure Click
• Gas Law Demonstrations Click 
• Adiabatic Cooling and Heating Click
• The Mass of a Rubber Band Click
• Beats: Demonstrations with a Cup and a Weighted Bowl Click
• Beats: A Demonstration with Rubber Bands Click
• Resonance Click 
• A Singing Pipe Click 
• Resonance: A Demonstration with Wine Glasses Click
• Speed of Sound in Air versus Temperature Click
• Decibel and Intensity Scales Click
• Helmholtz Resonance Click 
• A Model Eye Click 
• Capacitance Click
• Central Limit Theorem Click 
• Data in Physics Click 
• Area, Volume and Density with Measured Values. Click 
• Reaction Time Click 
• Reaction Time Click 
• eaction Time Data for M4 Click 
• A Cart on Ramp Click 
• Analysis Click
• Vertical Acceleration of a Centre of Mass Click
• A Simple Pendulum and Random Errors Click
• Hand-shake Test Click 
• Curve Fitting and Power Law Relationships Click 
• Questions Click
• Force Probe Calibration Click 
• Work and Kinetic Energy Click
• Analysis Click
• Determination of Specific and Latent Heats Click 
• Transfer of Heat by Convection Click 
• A Bernoulli Effect Investigation Click 
• Pressure and Density Click 
• A Physical Pendulum 1 Click 
• A Physical Pendulum 2 Click 
• Rotational Motion Click 
• Analysis Click 
• The Speed of Waves on a Tensioned String Click 
• Coefficients of Restitution Click 
• Ringing Rods and Pipes Click
• Rolling Resistance Click 
• Points to Ponder
• Friction Click
• Questions
• Centre of Mass Click
• Questions
• Buoyancy Click
• Questions
• Torque Click
• Questions
• Moments of Inertia Click
• Questions
• Refraction and Reflection Click
• Questions
• Mirrors and Lenses Click
• Questions
• Diffraction Click
• Questions
• Convection Click
• Questions
• Isothermal and Adiabatic Processes Click
• Question
• Answers Click
• Helmholtz Resonance Click 
• Questions
• An Investigation of Resonance Click 
• Questions