Learn about nuclear fusion. Get the definition and examples of both natural fusion in stars and artificial fusion for weapons and energy.| Science Notes and Projects
Get the element definition in chemistry. See examples of chemical elements, learn how many there are, and see how they are identified.| Science Notes and Projects
Learn what a nova is. Get facts about novae and supernovae, including how they form, the difference between them, and famous examples.| Science Notes and Projects
Get the definition of a light year in astronomy. See examples of distances in light years and how the unit compares with parsecs and AU.| Science Notes and Projects
A simple equation relates wavelength to frequency. See examples converting between wavelength and frequency for light and sound.| Science Notes and Projects
See how to choose a telescope. Learn the difference between reflectors vs refractors, types of mounts, and other factors you should consider.| Science Notes and Projects
Get the definition of a gas in science. See examples of gases including elements, mixtures, and gases in everyday life.| Science Notes and Projects
Get the vacuum definition in science. See examples of a vacuum and learn ways to produce one in everyday life.| Science Notes and Projects