| Energy Basics |
| Kinetic Energy | |
| Potential Energy | |
| Thermal, e.g., kinetic energy of gas | |
| Radiation, e.g., light, infrared radiation, … | |
| Energy is conserved. | |
| Fahrenheit (F) | |
| Celsius (C) | |
| C = (5/9)*(F – 32) | |
| Kelvin (K) | |
| K = C + 273 | |
| Heat is energy in the process of being transferred from one object to another because of the temperature difference between the objects. |
| Take 1g liquid water | |
| Add 1 calorie heat | |
| Raises temperature 1C | |
| The Specific Heat of pure water is thus = 1Cal/(g C). | |
| Other examples: | |
| Mud 0.6Cal/(g C) | |
| Ice 0.5Cal/(g C) | |
| Dry air 0.24Cal/(gC) | |
Radiation of the Earth and Sun
| All things emit radiation. Wien’s law: | |
| Sun: lmax = 3000mm K/6000K = 0.5mm | |
| Earth: lmax = 3000mm K/300K = 10mm |