Other error codes for a Samsung Refrigerator: Display Panel Is Showing PC-ER: If the display panel shows PC-ER, make sure the wire harness under the top left door hinge is properly connected. Unplug the refrigerator and remove the top left hinge cover.
In 1913 one of Rutherford's students, Niels Bohr, proposed a model for the hydrogen atom that was consistent with Rutherford's model and yet also explained the spectrum of the hydrogen atom. The Bohr model was based on the following assumptions. 1.
Boron was discovered in 1808 in both France and Great Britain. The chemists Joseph-Louis Gay-Lussac and Louis-Jaques ThÃ©nard isolated boron in their laboratory in France. Around the same time, Sir Humphry Davy was isolating boron in his lab in London; all three chemists are credited with the discovery.