Propagation Needs a Medium

Demo Index

Mechanics

Mechanics Index

M1:Crystal Structure - Salt
M2:Crystal Structure - Carbon
M10:Gravitational Acceleration
M11:Guinea and Feather
M12:Gun That Never Misses
M13:Pop and Drop
M14:Rolling Cart Catches Ball
M15:Centre of Mass
M16:Principle of Moments
M17:Centre of Gravity
M18:Plunger
M19:Double Cone
M20:Inertial Reference Frame
M21:Ball Falling into Cup
M22:Slinky
M23:Falling Chimney
M30:Inertia
M40:Parallelogram of Forces
M41:Resultant of Vectors in 3D
M42:Components of Forces
M43:Aeroplane on a String
M44:Tangential Motion
M46:Spheres on Inclined Plane
M47:Stability of a Ladder
M48:Roller on Inclined Plane
M49:Loaded Block on Inclined Plane
M50:Block on Inclined Plane
M60:Varying Tension in String
M61:Pulley Systems
M62:Resolution of Forces - Inclined Plane
M66:Differential Pulley
M67:Screwjack
M68:Equal Masses on Double Pulley
M69:Adjustable Pulley
M80:Trolleys
M81:Newton's Cradle
M82:Small Newton's Cradle
M83:Balls on Rails
M84:Inelastic Collisions
M85:Conservation of Momentum
M86:Elastic and Inelastic Collisions
M87:Superballs
M88:Conservation of Momentum
M89:Air Track
M90:Rocket and Block
M91:Air Table
M92:Water Rocket
M93:Balls on Tracks
M100:Attwood's Machine
M101:Crowbar
M102:Rotational Motion
M103:Conservation of Momentum: Jet Propulsion
M104:Centrifugal Force
M105:Rotating Candles
M106:Large Gyroscope
M108:Angular Momentum
M109:Little Gyroscopes
M110:Rotational Motion
M114:Celts
M120:Hooke's Law
M121:Elastic Limit
M122:Torsion & Modulus of Rigidity
M130:Harmonic Motion
M131:Cantilever Oscillations
M132:Ball on a Spring
M133:Oscillating Ball on Slope
M140:Simple Pendulums
M141:Period of Oscillation
M142:Whirligig Pendulum
M143:Galileo's Pendulum
M144:Ballistic Pendulum
M145:Probabalistic Pendulum
M146:Ring Pendulum
M147:Different Length Pendulums
M148:Oscillating Lamina
M149:Double Pendulum
M150:Two Rod Pendulums
M151:Giant Pendulum
M160:Single Wilberforce Pendulum
M161:Adjustable Wilberforce Pendulum
M162:Simple Coupled Oscillator
M163:Oscillators Coupled by Mass
M164:Oscillators Coupled by Rod
M165:Oscillators Coupled by Bar
M166:Pair of Wilberforce Pendulums
M170:Resonance
M171:Resonance Oscillations
M180:Chemical Balance
M181:Large Vernier Calipers
M182:Large Slide Rule
M183:Model of a Vernier Scale
M184:Micrometer Screwgauge
M185:Spherometer
M186:Vector Arrows

Electromagnetism

Electromagnetism Index

EM1:Galvanometer
EM2:Audio Oscillator
EM3:Variac
EM21:Charging By Induction
EM22:Faraday’s Ice Pail
EM23:Charge On Concentric Shells
EM24:Charge On Irregular Shapes
EM25:Charging By Induction 2
EM26:Van de Graaf Generators
EM27:Box Of Electrostatic Demos
EM28:Capacitance
EM29:Capacitor With Dielectric
EM30:Capacitor With Ball
EM31:Spark Gaps
EM32:Variable Capacitors
EM33:Kelvin Current Balance
EM34:The Electrostatic Field
EM35:The Electrophorous
EM36:Triboelectricity
EM37:Swinging Pith Ball
EM38:Proof Planes
EM39:Gold Leaf Electroscopes
EM40:Whimshurst Machines
EM51:Resistance
EM55:Back EMF Of Motor
EM57:Time-Dependent Currents
EM60:Time Constant
EM61:Variable Capacitor
EM62:Giant Capacitor
EM63:1 Farad Capacitor
EM64:Capacitor In A Glass
EM65:Canned Capacitors
EM66:Box Of Capacitors
EM93:Alternating Currents
EM94:Tesla Coil
EM96:LR Circuit
EM97:Self-Inductance
EM98:Electrical Beats
EM100:Resonance
EM121:Step-Up Transformer
EM125:Parallel Currents
EM126:Step-Down Transformer
EM127:Bulbs Light Via Inductance
EM128:Induction in a Coil
EM129:Self-Inductor
EM130:Magnetic Braking
EM131:Induction: Coil-to-Coil
EM132:Induction: Spinning Magnet
EM133:Earth Inductors
EM141:Galvanometer
EM142:Magnetic Field in Loop
EM143:Lodestone
EM144:North and South Poles
EM145:Mahomet's Coffin
EM146:Mahomet's Coffin - Rings
EM147:Magnetic Field - Bar
EM148:Induced Magnetisation
EM149:Magnetic Field - Current
EM150:Sticks
EM151:Oersted's Experiment
EM152:Force on Moving Charge
EM153:Faraday Cage
EM155:Hysteresis
EM156:Curie Temperature
EM157:Magnetic Field - Disc
EM170:Cathode Ray Tubes
EM171:Thermionics: Diodes - Rectification
EM172:Discharge Tubes
EM173:Positive Rays

Light and Waves

Light and Waves Index

L1:Linear Lens Arrays
L2:Lens Aberrations
L3:Lenses and Mirrors
L4:Panels
L5:Case of Lenses
L8:Unknown
L12:Mechanical Refraction
L13:Refraction Tank
L14:Double Refraction
L15:Multiple Reflections
L17:Semi-Circle Mirrors
L19:Lightbox Optical Set
L22:Total Reflection
L30:Adjustable Prism
L32:Direct Vision Prism
L33:Unknown
L35:Prism on Stand
L36:Prism Tower
L41:Vibrating String
L42:Resonator
L43:Chladni Plate
L44:Point Source Interference
L45:Newton's Rings
L47:Longitudinal Waves
L49:Torsional Waves
L50:Array of Glass Plates
L51:Polarisation
L53:Interfering Waves
L55:Crova’s Disc
L56:Lamp on Rod
L57:Ultraviolet Lamp
L58:Small UV Lamp
L59:Light Boxes
L61:Directed Lamp
L62:Helium-Neon Laser
L66:Photoelasticimetry
L67:Light Polarisation
L69:Rectilinear Propagation
L71:Unknown
L76:Absorption and Reflection
L77:Colour Rendering
L78:Colour Mixture
L79:Colour Wheel
L80:Coloured Slats

Thermodynamics and Matter

Thermodynamics and Matter Index

H1:Thermal Expansion
H2:Contraction on Cooling
H3:Varying thermal expansion
H6:Thermal Expansion of Liquids
H7:Thermal Expansion
H8:Thermal Expansion
H12:Regelation of Ice
H15:Cooling by Evaporation
H17:Vapour pressure
H18:
H20:Cloud Chamber
H21:Dippy Dillies
H24:Critical Point of C02
H25:Hygrometers
H31:Thermal Conductivity
H32:Thermal Conductivity
H33:Convection
H36:Radiation
H37:Heat Absorption
H38:Radiation
H39:Radiation
H42:Radiometer
H45:Thermocouple
H46:Radiation: Diathermancy
H47:Indicators of Temperature
H48:Berthelot Apparatus
H49:Bunsen Ice Calorimeter
H50:Heat Engines
H51:Strain: Bologne Phials
H52:Portable De-ioniser
HY1:Upthrust on Floating Body
HY2:Liquid Levels
HY5:Fluid Pressure
HY6:Hydrostatic Paradox: Pascal’s Vases
HY7:Archimedes’ principle
HY8:Upthrust
HY10:Buoys
HY11:Cartesian Diver
HY12:Vortex Action
HD4:Relaxation Oscillations
HD5:Relaxation Oscillations
HD6:Buoyancy - Shape
Torricelli's Law of Efflux
AP1:Magdeberg Hemispheres
AP10:Manometer
AP11:Bell Jars
AP12:Hand Pump
AP13:Glass Syringes
AP3:Pressure gauges
AP4:Air Weighing
AP7:The Bernoulli Effect
AD1:Bellows and Blower
AD2:Venturi
AD6:Pumps
S1:Propagation Needs a Medium
S2:Organ Pipes
S3:“Gauze Tones” - Beats
S5:Doppler effect
S7:Galton’s Whistle and Sensitive Flame
S8:Periodic Pulses
S9:The Siren
S10:Resonance
S12:Tuning Forks

This section of the site is currently under construction.

Reference: S1
Category: Sound
Purpose:
Description: Bell jar with suspended bell. Battery. Vacuum pump B. Exhaust bell jar and note diminution in sound of bell. Components are separated at the moment.

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