- Learning
- Nuclear Fusion Courses
- Nuclear Energy Courses
- Radioisotopes as Sources of Ionizing Radiation
- Interaction of Atomic Nuclei with Particles
- Nuclear Fuel and the Nuclear Fuel Cycle
- The Principles of Operating a Nuclear Power Plant
- The First Reactor and the First Nuclear Power Plant
- The Most Used Nuclear Reactors: PWR and BWR
- Nuclear fuel
- Nuclear fuel and nuclear reactors
- Nuclear power industry
- Nuclear reactors
- Radioactive waste
- Radioactive waste and safety of nuclear power plants
- Nuclear power
- Summative, cross-sectional test — Light version
- Summative, cross-sectional test — PRO version
- Renewable Energy Courses
- NUCLEAR fusion
- Energy Space Quest
- NUCLEAR energy
- Nuclear Power Plant Interactive 3D Model
- Nuclear Power
- The Nuclear Power Industry
- Nuclear Fuel
- The Nuclear Reactors
- The Nuclear Power Plant — How it Works
- The First Reactor
- Pressurized Water Reactor (PWR)
- Boiling Water Reactor (BWR)
- Heavy Water Reactor (PHWR)
- Gas-cooled Reactor (GCR) and Advanced Gas-cooled Reactor (AGR)
- RBMK Type Reactor
- High Temperature Reactor (HTGR)
- Reactor Using Fast Neutrons (FR)
- The Future of Fission Reactors
- Thermonuclear Fusion
- ITER Tokamak Interactive 3D Model
- NPP PWR Interactive 3D Model
- NPP BWR Interactive 3D Model
- NPP Small Modular Reactors Interactive 3D Model
- Radioactive Waste
- The Safety of Nuclear Power Plants
- Renewable Energy
- WATER energy
- Hydroelectric Power Plant Interactive 3D Model
- Hydroelectric Power Plant Operating Principles
- The Physical Properties of Water
- The Origin of the Water Energy
- History of Water Energy Utilization
- Water Energy and Its Uses
- The Segner Wheel
- Dams and Reservoirs
- Types of Hydroelectric Power Plants
- Kaplan Turbine
- Francis Turbine
- Pelton Turbine
- Choosing a turbine (Turbine selection graph)
- The Highest Dams, the Highest Largest Reservoirs
- The Largest Hydroelectric Power Plants in the World
- Tidal Energy and Sea Wave Power
- Marine Current Power and Ocean Thermal Energy
- HPP Impact on the Environment
- WIND energy
- SOLAR energy
- GEOTHERMAL energy
- BIOMASS energy
- The FUTURE of Renewable Energy Sources
- WATER energy
- 3D models
- Free Downloads
- Physics mysteries
- Scientific breakeven
- Scram
- Scrape-off layer, SOL
- Secondary circuit
- Segner wheel
- Semiconductor
- Shaft
- Shut-off (emergency) rod
- Sievert, Sv
- Single-null-divertor
- Small hydroelectric power plant
- Sodium, Na
- Solar (thermal) collector
- Solar concentrator
- Solar farm
- Solar hot air collector
- Solar radiation
- Solar thermal power plant
- Solar updraft tower
- Speed of the wind
- Spent (burnt) fuel
- Spherical tokamak
- Spheromak
- Spillway
- Star
- Steam cycle
- Steam generator
- Stellarator
- Stirling engine
- Strobe effect
- Strontium, Sr
- Subcritical state
- Sun
- Superconductor
- Supercritical state
- Superheated water
- Supernova
Star
A giant sphere of hot plasma inside which thermonuclear fusion is occurring. The star emits light and heat as a result. Stars are typical celestial objects, estimated to number 100—400 billion in our Milky Way galaxy alone. One of the stars is the Sun, around which the planet Earth orbits. The predominant element in which stars are composed of is hydrogen. Their mass ranges from about 1 × 1029 kg to 6 × 1032 kg, their surface temperature from 2,000 K (red) to 50,000 K (blue-white). Stars form from a molecular cloud of hydrogen gas and undergo fusion over billions of years. At the end of their lives, they often end in an explosion that scatters a portion of the star into the surroundings, enriching it with many of the elements created in the final fusion reactions. These elements can form planets or other stars.
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ABOUT US
Energy encyclopedia (EE) is the project of Simopt. We have devoted ourselves to popularizing energetics in an educational and entertaining way since 1991. In the following years, we plan to continue the development of EE.
In case of serious interest for cooperation, contact us at [email protected].