Get the dark energy definition and explanation. See how dark energy accounts for the accelerating expansion of the universe. Dark Energy This entry was posted on September 17, 2023 by Anne Helmenstine (updated on September 22, 2023)
Learn what Planck's constant is and why it is important in quantum mechanics. Get the definition and value of h. Planck’s Constant Definition and Value This entry was posted on September 3, 2023 by Anne Helmenstine (updated on September 10, 2023)
Learn what the electromagnetic spectrum is. Get the definition, diagram, and explanation of the different forms of electromagnetic radiation. Electromagnetic Spectrum Definition and Explanation This entry was posted on August 29, 2023 by Anne Helmenstine (updated on September 5, 2023)
Learn about the Coriolis effect and Coriolis force. See how the effect works, where it is strongest/weakest, and how to see it for yourself. Coriolis Effect and Coriolis Force This entry was posted on August 27, 2023 by Anne Helmenstine (updated on September 5, 2023)
Can it be too hot to fly a plane? Here is the answer to the question and a look at the reasons and solutions. Can It Be too Hot to Fly an Airplane? This entry was posted on July 26, 2023 by Anne Helmenstine (updated on August 6, 2023)
Learn what dark matter is. See the evidence for its existence and learn about research aimed at exploring its nature and properties. What Is Dark Matter? This entry was posted on June 21, 2023 by Anne Helmenstine (updated on September 17, 2023)
Learn about the speed of sound in physics for solids, liquids, and gases. Get the values in different units and see how to use the formulas. Speed of Sound in Physics This entry was posted on June 17, 2023 by Anne Helmenstine (updated on June 22, 2023)
Learn about luminescence of materials. Get the definition and see the types of luminescence, with examples. Luminescence Definition and Examples This entry was posted on May 14, 2023 by Anne Helmenstine (updated on May 23, 2023)
Learn about nuclear fission. Get the definition, examples of both spontaneous and induced fission, and its difference from fusion. Nuclear Fission Definition and Examples This entry was posted on May 13, 2023 by Anne Helmenstine (updated on May 23, 2023)