Door de tekst
heen staan verschillende experimenten.
- The Power of Electricity
How electricity is amde, how it is distributed, how it is used.
- The Power of Gas
How Gas is made. Natural Gas. Power from the sun.
- Machines Make Work Easier
The Lever. The Inclined Plane. Friction. Pulleys.
- The Internal Combustion Engine
- What a Noise
How noise is produced. Pitch and vibration. Echoes and the ear.
- Light for Life
What is light? The spectrum. Mirrors. Heat and Light.
- A Supply of Water
Natural water supplies, oases, springs and artesian wells. Supplying
water to towns
- Public Health
The Plague and the Great Fire. The Growing awareness of the need for
public health. Pollution