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 compounds were known and used for thousands of years but the element was first discovered by Jons Jakob Berzelius, in 1824. Before that, it was isolated in the lab by combined efforts of Joseph Louis Gay-Lussac, Louis Jacques Thenard, thÃ©nard And Sir Humphry. davyoron has been useful to mankind in the form of different compounds. The existence of this element was first discovered by Joens JÃ¶ns Jakob. Berzelius it is known to have wide variety of uses from medical to industrial. Purposes read This buzzle article to know more about what the element boron is used. for