Stuff how do solar cells actually was so hisself are mainly composed of silicone. Silicon asms have full electrons in the outer shell and are stable but then the silicon is split into 2 layers. Bosphorus is mixed into one like it has value electrons in its outer shell one too many which can orbit for. The 2nd layer is mixed with boron which has only 3 out electrons one to feel. That means the layer has gaps which attract the excess phosphorus electrons this creates a flow of negatively charged electrons from one layer to the other one layer loses electrons and becomes positive the other gains electrons and becomes negative creating 2 holes eventually all the gaps on the surface of the lay. Is occupied the holes and the electrons are now too far apart to migrate them with the sun comes in when some light hits the surface like energy splits off one electron making a hole under so close election. The electron is attracted to the positive and the hole goes another electron from another dow
How do solar cells actually was surface else are mainly composed of silicone. Silicon asms have full electrons in their outer shell and are stable but then the silicone is split into 2 layers. Bosphorus is mixed into one like it has 5 electrons in its outer shell one too many which can orbit for. The 2nd layer is mixed with boron which has only 3 out electrons one to feel. That means the layer has gaps which attract the excess phosphorus electrons this creates a flow of negatively charged electrons from one layer to the other one layer loses electrons and becomes positive the other gains electrons and becomes negative creating 2 poles eventually all the gaps on the surface of. Is occupied the holes and the electrons are now to florida plant to migrate them with the sun comes in when some light hits the surface layer splits on one electron making a hold on to supply selection. The electron is attracted to the positive and the hole goes another electron from lower down to replace the one
Russia records a sharp rise in new coronavirus cases of more than 10024 hours. Before the disaster. Why the mayor of minnows is asking gretz its one bird to help stop the protectors of the amazon rain forest dying from covert 19. And Israels High Court hears a challenge against the new Coalition Government which could trigger the countrys 4th election in 18 months. Fellow Health Officials in afghanistan fear the coronavirus outbreak theyre responding far more rapidly than previously thought it follows the random testing of 500 people in kabul more than 150 of them tested positive suggesting around a 3rd of the capitals residents could be infected and in russia coronavirus cases are continuing to surge its registered its 4th record one day rise with over 10000. 00 new infections bringing the total there to nearly 135000 but both italy and spain 2 of the countrys worst affected by the pandemic have registered their lowest daily number of coronavirus deaths in nearly 7 weeks so as infecti
Camera cell phone video shows a man brandishing a back moments before he was shot dead by San Leandro Police during the detention. Boy that hasan. A taser was in effect. The same officer then fired one shot at the suspect striking him in the torso. At the same time simultaneously the second officer for their taste. The incident happened just before 3. 15 saturday afternoon inside the walmart on his spear in boulevard we spoke to a customer off camera who was inside the store and i heard. People ran towards. The back from the front of the store saying there was someone with a gun and then there was someone shooting. This video shows the chaos inside then more people started to come towards them. And thats when everybody kind of started getting in panic mode and everybody kind of just wanted to find an exit and everybody was scared everybody huddled together San Leandro Police initially responded to a robbery but that was not the case when they arrived police say the officers attempted t
World Health Organization suggests an adequate test positive rate should be somewhere between 3. 12 . But right now in the u. S. , its about 20 . This comes as the death toll has skyrocketed in the u. S. Last week was the deadliest sent on to say the death toll was just over 25,000 but its sort of 4300 deaths from wednesday to thursday. And over 4500 people died on friday alone. Last night we closed in on 39,000 deaths and thats more than the number of people who died in the korean war. For weeks now federal and state officials have been talking about testing shortfalls and why patients who have symptoms cant get tested. Well now we have new insight into how testing got off to such a slow start here in the u. S. Karen caifa has more. President trump says a few states are ready to ope businesses within the next week we continue to see a number of positive signs. The virus has passed its peak. The president pointing to vermont and montana and texas where the governor says a phased reopen