Learn what plankton is. Get the definition and examples of different types of plankton and discover their ecological importance. What Is Plankton? Definition and Examples This entry was posted on March 29, 2023 by Anne Helmenstine (updated on August 5, 2023)
Find out how many minutes are in a day. Compare the number of minutes in a solar day versus a sidereal day and see why there is a difference. How Many Minutes in a Day? Easy Time Conversion This entry was posted on March 28, 2023 by Anne Helmenstine (updated on April 2, 2023)
Learn about the fire rainbow or circumhorizontal arc. See how it works and how to distinguish it from cloud iridescence or sun dogs. Fire Rainbow: The Mesmerizing Beauty of the Circumhorizontal Arc This entry was posted on March 26, 2023 by Anne Helmenstine (updated on March 29, 2023)
Get the Henderson Hasselbalch equation and examples showing how to use it to calculate the pH of weak acids or weak bases. Henderson Hasselbalch Equation and Examples This entry was posted on March 25, 2023 by Anne Helmenstine (updated on September 13, 2023)
Get total solar eclipse facts, including a list of upcoming total eclipses, the stages of the eclipse, and special features to see. Total Solar Eclipse – Diamond Ring Effect, Baily’s Beads, and ... This entry was posted on March 22, 2023 by Anne Helmenstine (updated on August 19, 2023)
Learn about the chalcogens on the periodic table. The chalcogens are group 16 or the oxygen group. These elements share common properties. Chalcogens on the Periodic Table – Oxygen Group or Group ... This entry was posted on March 21, 2023 by Anne Helmenstine (updated on November 25, 2023)
Get a list of things that float or sink in water. Learn how density and buoyancy determine whether a substance floats or sinks. Things That Float or Sink in Water This entry was posted on March 19, 2023 by Anne Helmenstine (updated on March 26, 2023)
Learn how to make a compass using simple materials. See how a homemade compass works and learn how to find North. How to Make a Compass This entry was posted on March 18, 2023 by Anne Helmenstine (updated on March 26, 2023)
Get the Hund's rule definition and examples in chemistry and learn how it relates to the Aufbau principle and Pauli exclusion principle. Hund’s Rule Definition and Examples This entry was posted on March 16, 2023 by Anne Helmenstine (updated on March 20, 2023)