physikanten & co // Experiments // The Sound of Car Tires

The Sound of Car Tires

If you have a close look at a tire tread pattern you will notice that the single tread blocks all differ in size.

Nearly every car tire has this property. With the help of simple sound amplification the Physikanten show that the sound of the rotating wheel is clearly different depending on whether you have a normal tire or a specially designed one with equally-sized tread patterns.

How does it work?
Each time a tread block hits the street, a little sound is produced. If all tread blocks had the same size, these sounds would reach our ears at regular intervals as a certain frequency – a tone.
However if the tread blocks all have irregular sizes then you don’t hear a tone but rather a kind of noise, which isn’t pleasant but is less annoying than a distinct tone.

The Sound of Car Tires:
The Experiments

Exposed Roof Tiles
Exposed Roof Tiles
Truncated Flame
Truncated Flame
Balloon Scales
Balloon Scales
Dry Hand in Water
Dry Hand in Water
Petrol Organ
Petrol Organ
Cutting a broom
Cutting a broom
Boomwhackers
Boomwhackers
Chemical Screen
Chemical Screen
Chladni Figures
Chladni Figures
CO2 in 2 Minutes
CO2 in 2 Minutes
Cola Mentos Geyser
Cola Mentos Geyser
Floating Boat
Floating Boat
The Theremin
The Theremin
Imploding Oil Barrel
Imploding Oil Barrel
The simplest motor in the world
The simplest motor in the world
The Geyser
The Geyser
DIE HEXE ZAUBERT
DIE HEXE ZAUBERT
Igniting a Diesel-Air Mixture
Igniting a Diesel-Air Mixture
Can Explosion
Can Explosion
Filament Explosion
Filament Explosion
Egg Race
Egg Race
Electrostatic Levitation
Electrostatic Levitation
Strawberry Ice Cream with Liquid Nitrogen
Strawberry Ice Cream with Liquid Nitrogen
Exploding Hot Water Bottle
Exploding Hot Water Bottle
Faraday Cage
Faraday Cage
Colour Changing
Colour Changing
Fire-Tornado
Fire-Tornado
Liquid Oxygen
Liquid Oxygen
Appearing Gel Balls
Appearing Gel Balls
Melting Glass
Melting Glass
Gherkin traffic light
Gherkin traffic light
Gherkin Vacuum Motor
Gherkin Vacuum Motor
Gherkin Explosion
Gherkin Explosion
High and low voices
High and low voices
Concave Mirror Explosion
Concave Mirror Explosion
Hydrostatic Water Column
Hydrostatic Water Column
Hydrostatic Water Column XXL
Hydrostatic Water Column XXL
Inverted Flag
Inverted Flag
Catalyst
Catalyst
Candle Aquarium
Candle Aquarium
Candle Staircase
Candle Staircase
The Sound of Car Tires
The Sound of Car Tires
Oxyhydrogen gas box
Oxyhydrogen gas box
Gyroscope Suitcase
Gyroscope Suitcase
Laser-Bass
Laser-Bass
LEDs vs Light Bulbs
LEDs vs Light Bulbs
Illuminating Gherkin
Illuminating Gherkin
Light-Spectra
Light-Spectra
Corn Starch
Corn Starch
Methane Mamba
Methane Mamba
Methane Spiral
Methane Spiral
Fog Tornado
Fog Tornado
Polarizing Filter
Polarizing Filter
Reactive Aluminium
Reactive Aluminium
Giant Vortex Rings
Giant Vortex Rings
Rijke-Tube
Rijke-Tube
Tube Orchestra
Tube Orchestra
Rotating Air Column
Rotating Air Column
Rotating Water Tube
Rotating Water Tube
Rubens’ Flame Tube
Rubens’ Flame Tube
Saltwater Conduction
Saltwater Conduction
Blowing Plastic Bags
Blowing Plastic Bags
Floating Table Tennis Ball
Floating Table Tennis Ball
Pig Blood Magic
Pig Blood Magic
Strong Electromagnet
Strong Electromagnet
Stunning Statics
Stunning Statics
Nitrogen-Explosion
Nitrogen-Explosion
Nitrogen Fountain
Nitrogen Fountain
Nitrogen Dog
Nitrogen Dog
Nitrogen Cloud
Nitrogen Cloud
Human electric circuit
Human electric circuit
Disappearing Polystyrene
Disappearing Polystyrene
Super Absorbent Beaker
Super Absorbent Beaker
Super Absorbent Shell Game
Super Absorbent Shell Game
Tesla Transformer
Tesla Transformer
The Infinite Scale
The Infinite Scale
Walking on the ceiling
Walking on the ceiling
Vacuum Bazooka
Vacuum Bazooka
Van-de-Graaff-Generator
Van-de-Graaff-Generator
Van-de-Graaff-Motor
Van-de-Graaff-Motor
Video Feedback
Video Feedback
Business Card Lens
Business Card Lens
Tealight Wax-Explosion
Tealight Wax-Explosion
Thermal Imaging Camera Experiments
Thermal Imaging Camera Experiments
Heat Insulated Tornado
Heat Insulated Tornado
Water Parabola
Water Parabola
The Water Rocket
The Water Rocket
Water Scales
Water Scales
Steam Match
Steam Match
Whoosh-Bottle
Whoosh-Bottle
Eddy Current Brakes
Eddy Current Brakes
Time Delayed Reaction
Time Delayed Reaction

Experiments







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