Get the dark energy definition and explanation. See how dark energy accounts for the accelerating expansion of the universe.
Physics
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
Learn what the electromagnetic spectrum is. Get the definition, diagram, and explanation of the different forms of electromagnetic radiation.
Electromagnetic Spectrum Definition and Explanation
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
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?
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?
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
Learn about luminescence of materials. Get the definition and see the types of luminescence, with examples.
Luminescence Definition and Examples
Learn about nuclear fission. Get the definition, examples of both spontaneous and induced fission, and its difference from fusion.