Talk to a physician with experience treating facet joint pain to learn which of these options may be right for you: 1  Medication. 2  Physical Therapy. 3  Facet Joint Injections. 4  Nerve Ablation. 5  Facet Restoration.
Lesson Summary. Energy levels inside an atom are the specific energies that electrons can have when occupying specific orbitals. Electrons can be excited to higher energy levels by absorbing energy from the surroundings. Light is emitted when an electron relaxes from a high energy state to a lower one.
Power is the rate at which energy is transferred. It is not energy but is often confused with energy. The watt is the most commonly used unit of measure for power. It measures the rate of energy transfer. Click on a scenario number above to begin the interactive explainer. A watt equals a joule per second. If a smart phone uses five joules of energy every second, then the power of the phone is five joules per second, or five watts. The animation above demonstrates the difference between energy and power. Each slide in the animation will transfer energy at different rates for five seconds.