A digital twin is a live, data‑driven virtual replica of a physical object, system, or whole city that mirrors real‑time state and behaviour so you can monitor, simulate, and optimise the real world without physical risk. Cities use twins to run flood, traffic, energy, and asset‑management scenarios that inform faster, cheaper decisions.
 |
| Fig. Typical Net-Zero Buildings |
 |
| Fig. What is Humidity |
Humidity develops when liquid water becomes water vapor and mixes with air; the key drivers are evaporation (adds vapor), air temperature (warmer air holds more vapor), and cooling/air lifting (which causes condensation and clouds).
 |
| Fig. How Rust Developed in Iron |
Rust forms when iron reacts with oxygen in the presence of water or moisture; this process is accelerated by moisture, salts, and pollutants, which accelerate the electrochemical reactions that convert iron into hydrated iron oxides (rust).
