1825:
- Portland Cement: Joseph Aspdin developed Portland cement, a crucial component in modern concrete production, in Leeds, England.
- Steam Locomotive: Richard Trevithick and Andrew Vivian introduced their steam locomotive, which ran on rails and could carry passengers.
1826:
- Asphalt Road: John Loudon McAdam introduced the concept of asphalt roads, using tar and crushed stone for a smoother and more durable road surface.
1827:
- Internal Combustion Engine: Samuel Morey successfully demonstrated his internal combustion engine, which used a mixture of air and coal dust for fuel.
- Photochromism: Johann Wilhelm Ritter observed the reversible changes in the color of silver chloride when exposed to light, laying the foundation for photography.
1828:
- Safety Matches: John Walker invented friction matches with a non-toxic mixture, addressing the safety concerns associated with the previously used phosphorus-based matches.
1829:
- Electromagnet: William Sturgeon invented the first electromagnet, demonstrating that an electric current could create a magnetic field.